ECAT

ECAT User Guide

V 1.01

July 2008

P 513.272.1111 3940 Virginia Avenue, Cincinnati, OH 45227 USA F 513.272.0211 www.mercuryinstruments.com www.rmg.com

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INTRODUCTION The Mercor ECAT is an electronic stand-alone, self-powered, meter-mounted instrument that provides a corrected volume reading on any gas meter having a rotating shaft output. It converts displaced volume to standard volume, referred to a pressure base and a temperature base, and also applies supercompressibility correction. The Mercor ECATAT can be used on diaphragm, rotary or turbine gas meters. The universal mounting bracket includes a standard index for indicating uncorrected gas volumes. 4 YEAR WARRANTY Mercury Instruments, Inc. warrants all instruments covered by this manual to be free from defects in material and workmanship under normal use and service. The Company agrees to repair or replace any instrument, which its examination reveals to have been defective, due to faulty workmanship or material if returned to our factory, transportation charges prepaid, within 4 years of purchase date. This warranty is in lieu of all other warranties, express or implied, and all obligations or liabilities on the Company’s part for damages including but not limited to consequential damages, following the use or misuse of instruments sold by it. No agent is authorized to assume for it any liability except as set forth above. Information in this manual is correct as of the date of publication. The Company reserves the right to make design or material changes without notice, and without obligation to make similar changes on equipment of prior manufacture. INTRINSIC SAFTEY FOR HAZARDOUS LOCATIONS The Mercor ECATAT is listed by Underwriter’s Laboratories as intrinsically safe for use in Class I, Group D hazardous locations, when installed in accordance with Procedure No. FD-314 (see back pages of this instruction manual). Warning: Substitution of components may impair intrinsic safety.

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CORRECTION FACTORS TO METERED VOLUME Ideal or perfect gases follow the relationship of Boyle’s Law for pressure effect and Charles’ Law for temperature effect, which can be stated: The volume of any definite weight of a perfect gas varies inversely with change in absolute pressure and directly with change in absolute temperature. The equation for this relationship of the two laws is expressed as follows: V1 P1 V2 P2 ———— = ———— T1 T2 The Symbols V1, P1 and T1 refer to the original volume, pressure and temperature while V2, P2 and T2 refer to the volume, pressure and temperature of the new or changed conditions. Rearranging the equation and rewriting subscripts, we can express it as follows: Pm Tb Vb = Vm X —— X —— Pb Tm

Where: Vb = gas volume (cu. ft.) at base conditions, corrected

Pb = absolute base pressure (psia)

Tb = absolute base temperature (deg. R)

Vm = gas volume metered (cu. ft.) uncorrected

Pm = absolute meter pressure (psia)

Tm = absolute meter temperature (deg. R) Pressure Factor Fp

The pressure factor (Fp) to apply to metered volume is expressed by the Boyle’s Law

relationship as follows:

Pm Meter pressure (psig) + atmospheric pressure (psia) Fp = —— = ———————————————————————— Pb Base pressure (psia)

Each increment of meter pressure represents a different pressure factor. As the flowing gas pressure (Pm) changes, the Mercor ECAT automatically applies the pressure factor (Fp) to the metered volume (Vm).

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Temperature Factor Ft The temperature factor (Ft) to apply to metered volume is expressed by the Charles’ Law relationship as follows: Tb Base temperature, deg. F + 459.67

Ft = —— = ———————————————— Tm Meter temperature, deg. F + 459.67 Each increment of meter temperature represents a different temperature factor. Therefore, as the flowing gas temperature (Tm) changes, the Mercor ECATAT automatically applies the temperature factor (Ft) to the metered volume. SUPERCOMPESSIBILITY FACTOR Fpv Gases actually behave in a manner slightly different from what the ideal gas laws indicate. This deviation depends on the molecular composition of the gas and the specific gravity as well as the pressure and temperature. Natural gas, for instance, compresses by a greater amount than that computed by Boyle’s Law and hence the term ‘supercompressibility” is used for this deviation. It is small at very low pressure, but becomes substantial as the pressure increases. The Mercor ECAT automatically applies the supercompressibility factor and therefore the equation for total volume correction which the Mercor ECAT applies to metered volume, is expressed as: Vb = Vm x Fp x Ft x (Fpv)2

Where: Vb = volume corrected to base conditions Vm = metered volume read from the meter index Fp = pressure factor Ft = temperature factor Fpv = supercompressibility factor determined from AGA 3 and NX 19, the AGA Manual fcr Determination of Supercompressibility Factors for Natural Gas. The values of Fpv are derived in the tables for use with orifice meters, which are square root function measurements. So the flow equation for linear volume meters must square the value of Fpv. The Mercor ECAT automatically squares the supercompressibility factor displayed, which is based on the pressure and temperature sensed at the meter. The resulting volume readout is corrected for pressure, temperature, and supercompressibility.

HOW THE MERCOR ECAT WORKS The Mercor ECAT is a dedicated microcomputer that uses precision sensors to measure gas pressure and temperature and corrects metered volume. Volume input is by means of redundant, sealed reed switches that are magnetically operated by the meter index. Totalized volume is continuously displayed on a large 8-digit LCD display, which is also used with a 16-character alphanumeric display to provide a wide range of user-selectable measurement information. The Mercor ECAT mounts directly on diaphragm, rotary, or turbine type meters and senses pressure and gas temperature at the meter. A mechanical index provides for continuous readout of uncorrected volume. The Mercor ECAT is self-powered by a replaceable battery pack.

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Drive Input A universal mounting bracket, containing a standard digital index for indicating uncorrected volume of gas, is used to adapt the Mercor ECAT to the meter. A reversing gear mechanism permits changing the index rotation to match meter wriggler rotation. Input of uncorrected volume to the processor unit is made by magnetically operated reed switches, the magnet being located on a shaft directly driven from, the index. There is very little torque loading on the meter. The dual input switches (switch #1 on the left, switch #2 on the right) allow continued operation if one switch fails. If a switch failure is detected an alarm is displayed. Pressure System The pressure sensing system incorporates a precision strain gage pressure transducer, located inside the Mercor ECAT housing and provided with a 1/4” NPT female case connection. A valve kit with shutoff valve, tubing and fittings is supplied to make the pressure connection to the meter. A built in manifold provides for a test connection, if desired. Temperature System The temperature system consists of a highly stable, solid-state transducer, connected to the Mercor ECAT through a 6-foot length of armored conductor. The probe is 1/4” diameter and is provided with fittings for the matching thermowell in the meter piping. SUPERCOMPRESSIBILITY CORRECTION Supercompressibility correction is included in the basic calculations that the Mercor ECAT makes on metered volume. The unit is configured with the values for specific gravity, mol percent of N2 and C02, and makes continuous correction for the specified gas composition based on actual sensed pressure and temperature. It displays the Fpv value but in making the supercompressibility correction it uses (Fpv)2. See Page 4. Information Display Two readouts, one numeric and one alphanumeric, are used in the Mercor ECAT. Display 1 (numeric) consists of 8 digits, 1/2” high. It normally reads corrected volume with 4, 5, 6, 7, or 8 digits displayed. Display 2 (alphanumeric) has 16 characters, 1/4” high, and provides legends, units of measure, and prompts for the user.

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Keypad A 16-button keypad is built into the Mercor ECAT providing several levels of access to operating features. Calibration and configuration can be performed in both the meter shop and the field, but access is protected by exclusive passwords (access codes), so that only those authorized to make calibration checks or to change pre-programmed values can do so. Computation Intervals Each time the Mercor ECAT receives an uncorrected volume pulse, it performs the calculations and updates the corrected volume display. If the corrector has a pulse output board, pulses will be generated after each computation until the accumulated pulses have all been sent. A power conservation feature allows a selected number of meter rotations to occur before new readings are made and displays are updated. Access Levels for Operating Personnel Three levels of access are available for operating personnel on the Mercor ECAT. The first level is available to the meter reader who can read uncorrected and corrected volumes; a limited number of indicated values, such as meter pressure and temperature and battery voltage; and any alarms that may be activated. He cannot, however, do anything that affects the operation of the Mercor ECAT. The second level of access is available to the field calibrator who can perform field calibration checks and make adjustments if necessary. He can also clear alarms and perform certain diagnostic functions. Access at the third level is reserved for the instrument technician who can reconfigure the Mercor ECAT by changing such things as base conditions and meter index value. He can also verify the instrument configuration and set and reset electronic totalizers and alarms. If the Audit Trail option is provided, there is a fourth level of access through the external case connection for a laptop computer connection. The laptop (with software) provides a two-way serial link to extract audit trail data, operating parameters or other data. Power Supply Power for the Mercor ECAT is supplied by a replaceable battery pack, located inside the instrument case. Mounting facilities and cable connectors are provided for two parallel battery packs, so battery. packs can be changed without removing power from the unit. This also permits the use of dual battery packs if desired. POWER CONSERVATION A power conservation feature is provided to extend battery life on fast meters. This is accomplished by selecting the number of meter revolutions needed to generate a “wakeup” of the Mercor ECAT. During each wakeup, measurements of pressure and temperature are made, correcting factors are computed, and displays updated. Each of these measurement and correction wakeups is equal to one battery “cycle.” Life of a battery pack is specified in cycles. A lithium pack should be changed after 10,000,000 cycles. An alkaline pack is rated at 3,000,000 cycles. Meter cycles are accumulated and are available for display, so the current state of battery life can be easily checked. A meter running at 5 RPM would require 2,628,000 wakeups in one year if the “REVS PER WAKEUP” is set at 1. Taking measurements five times per minute is far more frequent than is necessary in most meter applications. One wakeup every four to ten minutes would track

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pressure and temperature properly in most situations. Some meters run at 10 to 20 RPM, which makes this power conservation feature extremely beneficial. Other activities, such as calibration, logging data and generating output pulses also consume power and are accounted for in battery cycle accumulation. Even when the Mercor ECAT is in a quiescent Corrector Mode state, it uses about 100,000 battery cycles for one month of operation. HOW TO INSTALL AND OPERATE THE MERCOR ECAT Receiving When the instrument is delivered, be sure that all parts are received in good condition. Check the packing list to make certain the shipment is complete. Report any shortage or shipping damages to your Mercury Representative. Immediately file any damage claims with the carrier who delivered the shipment. Function Check Open the case, then unlatch and swing the chassis assembly outward. Check for any loose parts and verify that all connectors are properly seated. The battery pack is packaged separately and must be installed in the upper left hand corner of the case. Set the battery pack in place and plug in the battery connector. Install the metal cover provided over the battery pack. Swing the computer module back in place and latch it. The Mercor ECAT is now ready for functional checks. Caution: Do not use magnet to activate Meter Reader mode at this point. If this occurs accidentally or if the input pulse switch gets activated, it will be necessary to disconnect the battery and start over. Display 1 (numeric) may show a random pattern. Press the “Mi” button on the keypad face to prepare the unit for entry of an access code. Both displays will go blank. Key in the five digit Calibration Access Code and then press ENTR. The Calibration Access Code used for shipment is shown in the Configuration Data Record shipped with the instrument. This code is normally five l’s (11111). Display 2 (alphanumeric) reads PLEASE WAIT…….. while the Mercor ECAT updates its readings, then changes to SELECT FUNCTION. The Mercor ECAT is now ready for checking or changing calibration. Pressure Function - Gauge Pressure Transducer Press P ZERO. Display 1 displays pressure, while Display 2 says PRESSURE READY? as it waits for the user to connect a suitable test pressure. With no pressure connected, Display 1 will read very close to zero – typically, within plus or minus 0.2% of full scale. Press EXIT when ready. Display 2 reads SELECT FUNCTION.

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Pressure Function - Absolute Pressure Transducer Press P ZERO. Display 1 displays absolute pressure, while Display 2 says ABS PRESSURE. With no pressure connected, Display 1 will read the local atmospheric pressure. Press EXIT when ready. Display 2 reads SELECT FUNCTION. Temperature Function Press T ZERO. Display 1 displays the measurement from the gas temperature probe, while Display 2 says GAS TEMP READY? as it waits for the user to immerse the probe in a temperature bath. Verify that the temperature reading is as expected; warm the probe by touching its end and note the change in reading. Press EXIT when ready. Display 2 reads SELECT FUNCTION. Volume Function Press DISP. Display 2 reads COR VOL CU FT while Display 1 reads the existing corrected volume total. Note this total for a later check. Battery Pack Check Key-in 48 ENTR. Display 2 reads BATTERY VOLTAGE while Display 1 indicates the battery pack voltage. It will read between 6.0 and 7.0 volts with a lithium pack and approximately 8.6 volts for an alkaline pack. Memory Battery Check Key-in 51 ENTR. Display 2 reads MEM BATT VOLTAGE while Display 1 indicates the memory backup battery voltage. It will read between 3.2 and 3.8 volts. Volume Check Press EXIT twice to place the unit back into normal corrector operation. Display 2 will go blank and Display 1 will read the corrected volume. Rotate the index input wriggler in one direction for ten (10) revolutions. Verify that the volume has increased by the expected amount. (With zero applied pressure and room temperature, the additional corrected volume should be essentially equal to the index rate times the number of turns (10) of the wriggler). This completes the electronic function check.

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1 DISP

2

3 CLR

4

5 T ZERO

6 T CAL

CHNG

7

8 P ZERO

9 P CAL

ENTR

. YES

0 AUX

- NO

EXIT

m i MERCOR EC

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Check Rotation The universal mounting bracket permits installation of the Mercor ECAT on American, Invensys, Romet, or Roots meters. The base plate may be rotated so that the instrument and index will face in any of four (4) directions; merely remove all four (4) screws that attach the base plate to the index housing and replace them after you have repositioned the base plate. A reversing gear in the bracket permits either clockwise or counterclockwise meter rotation to drive the Mercor ECAT. Before installing the instrument. make the following checks:

1. Determine meter drive rotation by looking down on meter driving dog. Note whether it rotates clockwise (CW) or counterclockwise (CCW)

2. Inspect mounting bracket internal gearing by looking through opening in baseplate.

- If meter driving dog rotates CW, the lower bevel gear should be DOWN, against

bar. - If meter-driving dog rotates CCW, the lower bevel gear should be UP, against hub

of upper bevel gear.

3. To change rotation, if necessary:

- Remove transparent index cover.

- Remove two (2) thumbscrews and lift out index.

- Use spline wrench to loosen setscrew in the lower bevel gear.

- Shift gear down against cross bar, or up against upper gear, depending on rotation

you are setting. When shifting up, driving pin in lower gear should engage mating

hole in hub of upper gear.

- Tighten setscrew in lower gear against flat surface of shaft.

- Replace index ... use caution ... be sure bevel gears mesh properly with face gear

in both directions.

- Replace transparent index cover.

NOTE: When installing instruments on American Meter heads, request kit No. 20-4l87. This kit consists of special mounting bolts and a round cover plate required on some meters to cover exposed parts.

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Mounting 1. Attach universal mounting bracket to meter and tighten mounting screws. 2. Connect pressure line to 1/4” NPT pressure tap on manifold on bottom of case, using the valve kit provided. 3. Install temperature probe in thermowell.

Changing Batteries The power supply for the Mercor ECAT is a replaceable battery pack, located inside the instrument case. The service life of the battery pack is nominally 10,000,000 battery cycles for a lithium pack and 3,000,000 for an alkaline pack. There is considerable reserve to allow for battery replacement after the low battery alarm occurs. BATT CYCLES ALRM will alarm if the battery cycle counter reaches its preset limit. If the battery voltage drops below the preset value, BATTERY LOW alarm occurs (see the section on ALARMS). In either case, the battery pack should. be .replaced. A battery wake cycle is equal to one corrected volume computation, the output of 160 Form-C pulses, or 0.0073 hour of Corrector Mode operation. A dual mounting and cabling system allows batteries to be changed without removing power from the unit. As with any computer, IT IS IMPORTANT NOT TO DISCONNECT POWER WHILE THE UNIT IS OPERATING. The procedure is: First, hang the new battery pack on the two screws next to the existing pack. Then plug in the new battery connector next to the existing connector. Then unplug the existing battery connector. If the unit is in operation on a running meter, wait to unplug the old battery until just after you see the corrected volume update. Loosen the three screws holding the battery cover and old battery. Lift and remove both, taking care not to drop the battery. Slip the cover over the new battery, first loosening the three new mounting screws if necessary. Retighten screws. Gain access to the Calibration Mode (see pg. 17). Display Item 59: Battery Wake Cycles. Set Item 59 to zero by pressing CHNG (Change) key, then key-in zero and press ENTR. Press EXIT twice to return to Corrector Mode. A memory backup battery, located on the main circuit board, retains data when the battery pack is not connected. (NOTE; The SHUTDOWN function, Page 26 must be used to disconnect the main battery supply). The memory battery should not require replacement; however, if it becomes low, an alarm will be generated. When this occurs, simply replace the memory battery, leaving the main battery connected.

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Battery Shutdown - .H.E.L.P. Display Should the BATTERY LOW alarm be ignored and the battery pack not be replaced, the voltage will eventually decrease to the shutdown level, displayed in Item 50: SHUT DOWN VOLTAGE. When this level is reached, the Mercor ECAT will automatically shut down and no longer operate as a corrector and .H.E.L.P. will appear in Display 1. All of the configured values (and volumes accumulated to the time of shutdown) will be retained in memory. To resume operation, disconnect and remove old battery pack. Mount the new battery pack in the case but do not plug it in yet. Wait for at least 20 seconds and watch for the rotating index magnet to be away from the input switchboard and toward the front of the case. When it is, plug in the battery cable and press the “Mi” wakeup button (located on the keypad) immediately. Display 2 may show a random pattern. Press EXIT and the last corrected volume will appear in Display 1. The volume values (Items 0, 1, 2) should be checked and updated to the current adjusted or estimated values (if this is your company’s policy) based on current reading of the mechanical uncorrected index. Also verify the configured values (Base Pressure, Atmospheric Pressure, Base Temperature, Specific Gravity, etc.) to assure you that all parameters are correct. Then display Item 59, Battery Wake Up Cycles, and reset this value to zero. Check and reset Item 203 and 204 (Time and Date) before exiting the Calibration Access Mode. Pulse Output Board Terminal Connections The optional pulse output board is located in the lower right portion of the Mercor ECAT case. It contains 12-screw terminal strip to accommodate output connections for PULSER A, PULSER B, PULSER C and Alarms. The pulser switches are solid state, compatible with the Metretek Data Collection and Communication System. For more complete information refer to Installation and Wiring of Pulse Outputs in the Table of Contents.

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MERCOR ECAT OPERATING MODES The Mercor ECAT, when in service, is always in one of four operating states. Its operation in each state is well defined and suited to a particular purpose. The four states are referred to as “Operating Modes” and are: Corrector Mode Meter Reader Mode Calibration Mode Configuration Mode In the first three modes above, the Mercor ECAT receives inputs from the meter on which it is mounted (uncorrected volume); the pressure transducer (metering pressure); and the temperature probe (metering temperature). In the Configuration Mode, The Mercor ECAT would normally be on the bench in the meter shop or instrument shop. Corrector Mode The Mercor ECAT normally operates in the Corrector Mode. The other three Modes: Meter Reader, Calibration and Configuration Mode, when completed, always return to the Corrector Mode. To read corrected volume, it is necessary to lift a protective cover on the outer door of the corrector. The corrected volume continuously appears on Display 1. The uncorrected volume is displayed on the mechanical index in the mounting bracket. Uncorrected volume pulses are detected by a magnetically actuated reed switch at each meter output revolution. The corrector is activated by the reed switch at which time it measures the gas pressure and temperature, then calculates the correction factors and updates the corrected volume in Display 1. It then returns to the power conservation state until the next rotation of the meter output drive. Whenever the unit is in the Corrector Mode, the top display (Display 1) will contain digits while the lower display, (Display 2) will remain blank. Meter Reader Mode This mode provides the meter reader with access to a number of displays in addition to the corrected volume, without opening the door of the Mercor ECAT. By running a magnet activator along the right edge of the display window on the door, the meter reader can step through a sequence of readings. These readings include alarms as well as a list of up to 20 values, if desired. At the time the meter reader activates the unit by the first stroke of the magnet, the unit updates all measurements and displays the Corrected volume. The uncorrected volume continues to totalize on the mechanical index. When the last item in the scroll list has been completed, the unit goes back to the Corrector Mode. If the scrolling sequence has not been completed, after one minute of no magnet wand activity, the unit goes to the Corrector Mode automatically. Input pulses which occurred while the unit was in Meter Reader Mode have been stored and will be processed on exit. Calibration Mode The Calibration Mode on the Mercor ECAT provides for keypad calibration, for checking the

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instrument conditions, for reading all displays, for clearing alarms and for replacing batteries. This mode requires opening the door and gaining access through a code entered through the keypad. In the Calibration Mode, the unit keeps track of pulses. Corrected and uncorrected totals are updated when leaving the Calibration Mode, using values of pressure and temperature measured when the Calibration Mode is exited. Pressures and temperatures applied for calibration purposes are not used for correction calculations. Be sure the line pressure and temperature are restored before leaving the Calibration Mode. Configuration Mode The Configuration Mode allows the factory or the user to configure the Mercor ECAT. This mode is accessed by opening the door and keying in a configuration access code through the keypad. The operator can then select and perform various configuration functions, perform bench tests and other functions. METER READER MODE OPERATION The Meter Reader Mode provides access for the meter reader to display a number of items without opening the door of the Mercor ECAT. The items include alarms as well as a list of up to 20 values. Gaining Access To Meter Reader Mode Raise the weather cover on the Mercor ECAT door and, using the magnet wand provided with the unit, run it along the right side of the window. Display 2 (alphanumeric) will read PLEASE WAIT, then Display 1 (numeric) will read a number while Display 2 shows the corresponding legend or units of measure applicable to the number reading. For example, if the first item in the Meter Reader Mode sequence was configured to read gas pressure, when the magnet actuates the first read, Display 1 will show the pressure while Display 2 read GAS PRESS PSIG. Depending on how many items are programmed for the meter reader to read (you can display up to 20) the meter reader steps through the list by running the magnet along the window for each item to be read. If any alarm has been activated, it will appear first in the sequence of meter read items and will be identified in Display 2. Leaving Meter Reader Mode (Returning to Corrector Mode) When the last item in the scroll list sequence has been completed, the Mercor ECAT goes back to the Corrector Mode. If the scroll sequence has not been completed, after one minute of no magnet wand activity, the unit returns to Corrector Mode automatically.

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CALIBRATION MODE OPERATION The Calibration Mode provides for checking the condition of the corrector, for adjusting the pressure and temperature measurements, for reading all displays, for clearing alarms and for replacing batteries. Gaining Access To Calibration Mode Press the “Mi” button on the keypad face to prepare the unit for entry of an access code. Both displays will go blank. Key in the five digit Calibration Access Code. Display 1 will show a dash (-) for each digit of the number you have keyed. Then press ENTR. Display 2 (alphanumeric) will read PLEASE WAIT, then Display 1 (numeric) will show all zeros and Display 2 will read SELECT FUNCTION. NOTE: If you enter an invalid access code, Display 2. will read five dashes (- - - - -) and Display 2 will remain blank. It is necessary to press CLR, both displays will go blank, then key in the correct access code number and press ENTR. With the correct access code entered, the Mercor ECAT is now ready for checking or changing calibration. There are six basic functions you can perform at this point. They are: - Display (DISP) - Temperature Zero Adjust Calibration (T ZERO) - Temperature Two Point Calibration (T CAL) - Pressure Zero Adjust Calibration (P ZERO) - Pressure Two Point Calibration (P CAL) - Clear Alarms (AUX) - Shut down (AUX) Each function is available when Display 2 reads SELECT FUNCTION. To select a function, press the key labeled with that function name. They keys are DISP, T ZERO, T CAL, P ZERO, P CAL, and AUX. Leaving Calibration Mode (Returning to Corrector. Mode) At any point, even in the midst of any operation in Calibration Mode, you can terminate what you are doing and return the unit to Corrector Mode. Each time EXIT is pressed, you back up to a preceding state, and toward the SELECT FUNCTION prompt that Calibration Mode begins with. Anytime the SELECT FUNCTION prompt is displayed, pressing EXIT will return the unit to Corrector Mode for normal corrector operation. Display There are a number of displays that can be called up by the calibrator. Some are measured data, like corrected or uncorrected volume, gas pressure and temperature. Others are preset values, like base pressure, base temperature, average atmospheric pressure, or levels for alarms. Others include specific correction factors and scaling factors. To enter the display Mode, it is first necessary to press DISP (remember that Display 2 must first read SELECT FUNCTION). Display 1 will show the number of corrected cubic feet and Display 2 will read COR VOL CU FT. Key-in the desired item number. The item number will appear on the left side of Display 1. Then press ENTR. Display 2 will show the legend of the selected item while Display 1 will

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show the actual value. Listed below are some common items you may want to look up: 0 CORVOL Corrected Volume COR VOL 2 UNC VOL Uncorrected Volume 8 GAS PRESS Gas Pressure 13 BASE PRESS Base Pressure 14 ATM PRESS Contract Atmospheric Pressure 26 GAS TEMP Gas Temperature 34 BASE TEMP Base Temperature 44 PRESS COR FACTOR Pressure Correction Factor 45 TEMP COR FACTOR Temperature Correction Factor 47 UNSQUARED SUPER Supercompressibility Factor 48 BATTERY VOLTAGE Battery Voltage 53 SP GR FOR SUPER Specific Gravity For Supercompressibility There are many more items that might be called up and these will be covered later. NOTE: Each time you wish to look at a different item, if you are already in the display mode, enter the desired item number, visually check it in Display 1, then press ENTR. However, if Display 2 reads SELECT FUNCTION it is necessary first to select the display mode by pressing DISP and then the item number and then ENTR. It is also possible, when in the DISPLAY mode, to look at the next item in the list by pressing the YES key. Likewise, it is possible to back up to the previous item in the list by pressing the NO key. Changing Values In Display Mode Certain values can be changed through the keypad. The procedure is as follows:

First, display the item you wish to change using the method described above. For example, to change the base temperature, Key-in 34 then press ENTR. The current base temperature will be displayed. To change that value, press CHNG and key-in the new value xx.xx. Press ENTR. If you change your mind before entering a new value, but after pressing CHNG, you can return to the original value by pressing EXIT and the original value will be retained and displayed. Or if a wrong value is keyed in, you can clear it by pressing either CLR or CHNG, then key-in the correct value, then ENTR. Some item values cannot be changed by the calibrator and Display 2 will indicate this with “NOT ALLOWED” or for some items which are never changed, i.e.: item 61, DISPLAY TEST, the display will blink and no change will occur. See the Authorize Function on Page 64. Pressure Calibration - Gauge Pressure Connect a pneumatic deadweight tester to the Mercor ECAT. Open the pressure line to atmosphere to set zero. Get to the SELECT FUNCTION prompt (if in the display mode, press EXIT once). Press P ZERO and Display 2 will read PRESSURE READY?. Display 1 will display a pressure reading. Press YES and the Mercor ECAT will begin a sampling of the pressure while Display 2 reads SAMPLING....... . After sampling, Display 1 will read the average of the pressure for that sampling and Display 2 will read AVG PRESS PSIG. Set zero by pressing CHNG then key in 0, then ENTR. Display 1 will read the pressure (approx. zero) and Display 2 will read PRESSURE READY? Press EXIT to return to SELECT FUNCTION prompt.

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NOTE: If the indicated pressure matches the test pressure applied (in this case, zero), you can accept the reading by pressing YES. The Corrector will return to SELECT FUNCTION and will be ready for P CAL (Span). No further action is required for zero adjustment. Introduce an upscale pressure of known value to the Mercor ECAT by use of the dead weight tester. Display 2 will read SELECT FUNCTION. Press P CAL and Display 2 will read PRESSURE READY? Again Display 1 will display the pressure reading. When you are satisfied that the test pressure has stabilized, press YES and the Mercor ECAT will sample the pressure while Display 2 reads SAMPLING……….. Shortly, Display 1. will display the average of the pressure for that sampling period and Display 2 will read AVG PRESS P51G. Compare this readout with the test standard and if you wish to change the reading to agree with the pressure indicated by the test standard, press CHNG, Enter the correct pressure, XX.XX, and press ENTR. Display 1 will read the pressure and Display 2 will read PRESSURE READY? This completes the span adjustment. To exit from pressure calibration mode, press EXIT once. Display 2 will read SELECT FUNCTION. Pressure Calibration - Absolute Pressure Calibration of a Mercor ECAT with an absolute pressure transducer is complicated by the fact that most precision calibration equipment (i.e. deadweight testers and manometers) is referenced to gauge pressure rather than to absolute pressure. If a deadweight tester is set up with weights equivalent to 10 PSIG, and this pressure is applied to a Mercor ECAT with an absolute pressure transducer, the pressure reading will be 24.73 PSIA if the barometric pressure is 14.73 PSIA. To permit calibration with direct comparison to a deadweight tester, provision is made in the Mercor ECAT to subtract the barometric pressure from the absolute reading during the calibration procedure. (NOTE: If an absolute pressure reference is used to calibrate the Mercor ECAT, this barometric pressure subtraction can be bypassed. Go to the next page for the calibration procedure.) Connect a pneumatic deadweight tester to the Mercor ECAT. Open the pressure line to atmosphere. Get to the SELECT FUNCTION prompt, (if in the Display Mode, press EXIT once.) Press P ZERO and Display 2 will read ABS PRESSURE while Display 1 will read the absolute pressure at the moment the P ZERO was pressed. Press YES and Display 1 shows the value for atmospheric pressure used in the previous P ZERO calibration while Display 2 reads ATM CALREF PSIA. You must now enter the barometric pressure reading (in comparable units, i.e. PSIA) into the Mercor ECAT. To do this, press CHNG and Display 1 will go blank. Now key in the actual barometer reading in the proper units. (i.e., PSIA) then press ENTR. If you do not have a precision barometer, the ABS .PRESSURE measured by the Mercor ECAT with the pressure line vented to atmosphere can be entered as the ATM CALREF. To proceed with pressure calibration, press YES and Display 2 will read PRESSURE READY? Display 1, after a short pause, will display a value that is equal to the total absolute pressure less the barometric pressure that was selected in the previous step. This value now displayed is equivalent to gauge pressure. Since the pressure line is open to atmosphere, it should read close to 0. Press YES and the Mercor ECAT will begin sampling while Display 2 reads SAMPLING…….. After sampling, Display 1 will read the average of the pressure for that sampling and Display 2 will read AVG PRESS. If you wish to accept the sampled value, press YES and the Mercor ECAT will return to SELECT FUNCTION, ready for P CAL calibration. If you wish to set zero, press CHNG, then key-in 0, then ENTR. Display 1 will read the pressure (approx. zero) and Display 2 will read PRESSURE READY? Press EXIT to return to the SELECT FUNCTION prompt. Next, introduce an upscale pressure of known value to the Mercor ECAT as indicated by the deadweight tester. Press P CAL and Display 2 will read PRESSURE READY? Again, Display

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1 after a short pause, will display a gauge pressure reading. When you are satisfied that the test pressure has stabilized, press YES and the Mercor ECAT will sample the pressure while Display 2 reads SAMPLING........ Shortly, Display 1 will read the average of the pressure for that sampling period and Display 2 will read AVG PRESS. Compare this readout with the test standard and if you wish to change the reading to agree with the pressure indicated by the test standard, press CHNG, enter the correct gauge pressure, XX.XX and press ENTR. Display 1 will read the pressure and Display 2 wall read PRESSURE READY? This completes the span adjustment. To exit from pressure calibration mode, press EXIT once. Display 2 will read SELECT FUNCTION. NOTE: When using an absolute pressure standard for calibration, the procedure is as follows: First, connect the test standard to the Mercor ECAT. Get to the SELECT FUNCTION prompt. Press P ZERO and Display 2 will read ABS PRESSURE while Display 1 will read the absolute pressure at the moment P ZERO was pressed. Press YES and Display 1 will show the value of ATM CALREF used in the previous P ZERO calibration, while Display 2 reads ATM CALREF PSIA. If ATM CALREF reads 0.00, press YES to accept it. If it reads any other value, change it to zero by pressing CHNG, then key-in 0, then press ENTR. With Display 1 now reading zero, press YES to proceed. Display 2 will read PRESSURE READY? and Display 1 will read the barometric pressure, if the pressure line is open to atmosphere. Press YES and the Mercor ECAT will begin sampling while Display 2 reads SAMPLING…….. After sampling, Display 1 will read the average of the absolute pressure for that sampling and Display 2 will read AVG PRESS. To accept this value, press YES and Display 2 will return to SELECT FUNCTION, ready for P CAL calibration. To change the value, press CHNG and Display 1 will go blank. Key in the desired value, check it for correctness, and press ENTR. Display 1 will read the new pressure while Display 2 reads PRESSURE READY? The P ZERO calibration is now complete. Press EXIT to return to the SELECT FUNCTION prompt. Next introduce an upscale pressure of known value to the Mercor ECAT as indicated by the absolute pressure test standard. Press P CAL and Display 2 will read PRESSURE READY? Again Display 1, after a short pause, will display an absolute pressure reading. When you are satisfied that the test pressure has stabilized, press YES and the Mercor ECAT will sample again while Display 2 reads SAMPLING……… Shortly, Display 1 will read the average of the absolute pressure for that sampling period and Display 2 will read AVG PRESS. Compare this reading with the test standard. If you do not wish to change the reading, press EXIT. If you wish to change the reading to agree with the test standard, press CHNG, enter the corresponding absolute pressure, XX.XX and press ENTR. Display 1 will read the pressure and Display 2 will read PRESSURE READY? This completes the span adjustment. To exit from pressure calibration mode, press EXIT once. Display 2 will read SELECT FUNCTION. Temperature Calibration Place the temperature probe in an agitated bath of known temperature. If you have been working in the display function, press EXIT. Display 2 will read SELECT FUNCTION. Press T ZERO. After a short pause, Display 1 will display the temperature probe temperature while Display 2 reads GAS TEMP READY?. When you are satisfied that the temperature has stabilized, press YES and the Mercor ECAT begins to sample temperature readings. During this time Display 2 reads SAMPLING Shortly Display 1 will display a temperature value while the Display 2 reads AVG TEMP degree F. Check this reading against the precision thermometer in the agitated bath. If the indicated

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temperature matches the bath temperature, you can accept the reading by pressing YES. The corrector will return to SELECT FUNCTION and will be ready for T CAL. If you do wish to change the temperature reading of the Mercor ECAT, press CHNG and key-in the precision thermometer reading XX.XX then press ENTR. The unit will now continue to read temperature with the new calibration, while prompting GAS TEMP READY? to allow you to take another sample. If you do not wish to take another sample, press EXIT to return to SELECT FUNCTION. If you want to check and calibrate the span, it is best to perform the zero adjustment first with an agitated ice bath at 32 deg. F, following the instructions given above. Next, place the temperature probe into a higher temperature agitated bath and let the reading stabilize on the display. Press EXIT to get to the SELECT FUNCTION prompt. Press T CAL and Display 1 will display the temperature probe temperature, while Display 2 reads GAS TEMP READY? When you are satisfied that the temperature has stabilized, press YES and the Mercor ECAT will again take sample readings, while Display 2 reads SAMPLING………. Shortly, Display 1 will display the temperature reading and Display 2 reads AVG TEMP degree F. If you wish to change the display to match the precision thermometer, press CHNG and key-in the test thermometer reading XX.XX then press ENTR. Display 1 will display the new temperature and Display 2 will read GAS TEMP READY? Temperature span calibration is now complete. To exit temperature calibration mode, press EXIT once. Display 2 will read SELECT FUNCTION. To return to Corrector Mode, press EXIT again. Calibration Procedural Checks and Limits The pressure and temperature calibration procedures described in the preceding sections are very accurate and very powerful. Because large calibration changes could result from erroneous entries or by getting out of sequence, protective limits are built into the operating program. The following is a list of warning legends that appear temporarily in Display 2 if limits are exceeded or changes are attempted out of sequence.

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MUST DO ZERO If P CAL is attempted before P ZERO is completed or if T CAL is attempted before T ZERO is completed, the MUST DO ZERO warns the operator. The calibration calculation requires a zero point before the second point (span adjustment) can be made. It is not necessary to change the P ZERO point or T ZERO point. The existing zero values can be accepted by going into the P ZERO or T ZERO function and using the YES key as described in the preceding sections. EXCESS CHANGE Valid calibration changes are normally small. Digital entry makes possible very large changes simply by missing a decimal point. To avoid large errors and possible confusion, limits have been built into the calibration routines. These limits are normally set at 2% of span, but they can be adjusted by changing the limits in display Parameter Item 24 and 42. POINTS TOO CLOSE Attempting a two-point calibration with pressure points or temperature points too close together could result in calibration errors at points higher or lower that the two points used. The normal minimum distance between points is set at 50% of pressure span and 15% of temperature span. These limits can be changed using display Parameter Items 23 and 41. OUT OF RANGE Certain attempted calibration changes would be out of the calibration range or are in some other way unable to be properly calculated and are disallowed. Volume Correction Check The corrected volume calculation can be checked in the field or shop by taking a relatively small number of meter rotations. The units of measure typically used for corrected volume do not permit a sufficiently accurate check of calculation accuracy unless a large number of input counts are taken. But using the Item 113: High Resolution Corrected Volume (HI RES COR VOL), the corrected volume is displayed to four decimal places. This provides a high-resolution incremental volume from the subtracted difference between successive corrected volume readings. Item 113 is not a settable or changeable parameter. It is simply a high-resolution view of Item 0, the Corrected Volume total. Corrected volume is always computed to several decimal places, but decimal places are not shown in the normal display. To utilize this feature, The High Resolution Volume Display, Item 113, may be configured as one of the 20 available Meter Reader items. These are Items 130 to 135 and 75 to 86 in the configuration parameter item list. Also, Gas Pressure, Gas Temperature, and Uncorrected Volume should be configured as Meter Reader items. First, disengage the Mercor ECAT from the meter instrument drive. Position the input shaft so that the magnet on top of the rotating disk is toward the front of the case, i.e. the six-o’clock position. Apply an accurately known gas pressure and temperature to the corrector. Using the Magnet Wand, initiate the Meter Reader Display List. Write down the readings for: Uncorrected Volume

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High Resolution Corrected Volume Gas Pressure Gas Temperature Rotate the volume input shaft ten (10) turns, making sure the magnet ends up at the six-o’clock position. Repeat the Magnet Wand readings and write them down. Pressure and temperature should not change. Calculate the Corrected Volume using correction factors, which you compute from the gas pressure and gas temperature applied to the corrector and the difference in Uncorrected Volume readings. Compare this with the difference in the High Resolution Corrected Volume readings. Operation of AUX Key The AUX key operates only in the Calibration Mode and allows the operator to perform several functions in this mode. First, alarms are displayed and cleared by use of the AUX key. Also, the unit can be shutdown by use of the AUX key, but still retain all of the information in memory if the main battery is to be removed for any reason. Clear Alarms Instructions on how to clear alarms using the AUX key appear in the ALARMS section of this manual. Shutdown It may be desirable to shut down the Mercor ECAT and remove the main battery. This is possible without the loss of operating parameters, and can be done in the Calibration Mode (as well as the Configuration Mode). To do so, you should first get to SELECT FUNCTION. Then press the AUX key and Display 2 reads CHECK ALARMS? while Display 1 is blank. Press either AUX or NO and Display 2 will read CLEAR ALARMS? while Display 1 continues to read blank. Press either AUX or NO and Display 2 will read SHUTDOWN? while Display 1 continues to read blank. Press YES and Display 2 will read ARE YOU SURE? while Display 1 continues to read blank. Press YES and Display 2 goes blank while Display 1 shows eight dashes (- - - - - - - -). You must now disconnect the main battery and the Mercor ECAT will continue to hold all of its operating parameters in memory. If, when Display 2 reads ARE YOU SURE?, you change your mind and wish to keep the battery connected, merely press EXIT and the unit will return to SELECT FUNCTION. If you press NO or AUX at this point, the unit will return to CHECK ALARMS?. Then press EXIT and return to SELECT FUNCTON. Press EXIT again and the Mercor ECAT will return to Corrector Mode. The diagram on the next page shows the stepping sequence in the operation of the AUX key. Once the corrector is actually placed in the SHUTDOWN condition, it is necessary to unplug and reconnect the battery pack to restore operation. After reconnecting the battery pack, press the Mi button, then press EXIT, and the corrector will return to operation in the Corrector Mode.

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OPERALTING SEQUENCE OF METER READER LIST

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ALARMS There are Twenty-two alarm conditions available on the Mercor ECAT. Some respond to a fault condition, while others require limits to be set, which define the alarm level. Ten of the alarms operate automatically whenever an alarm level or fault condition occurs. Three of the alarms can be set up to be active or inactive. These three utilize a separate alarm output parameter to enable or disable the alarm. Each alarm is described in detail below, with its item number shown: 69 PULSER A ALARM Operates automatically when the output pulses accumulated in Item 5 register exceed the limit set into Item 66: Pulser A Limit. 70 PULSER B ALARM Operates automatically when the output pulses accumulated in Item 6 register exceed the limit set into Item 67: Pulser B Limit. 71 PULSER C ALARM Operates- automatically when the output pulses accumulated in Item 7 register exceed the limit set into Item 68: Pulser C Limit. 99 BATTERY LOW Operates automatically when the main battery voltage falls below the level set into Item 49: Battery Low Limit Voltage. 100 BATT CYCLES ALARM Operates automatically when the number of corrector computation cycles (wakeups) exceeds the limit set into Item 60: Battery Wakeup Cycles. This permits an early warning capability as the battery nears the end of its useful life. This alarm may be disabled by setting the value at Item 60 to 0. 101 MEM BATTERY LOW Operates automatically, if the memory backup battery ever falls below the level set into Item 52: Memory Backup Battery Low Limit Voltage. 102 INDEX SW #1 FAULT Operates automatically, indicating a fault in input Switch #1 (on the left side of the input switch board). Volume pulses are counted using Switch #2 alone after the alarm occurs. NOTE: If a failure occurs in either Switch #1 or Switch #2, the operational switch will continue to input the uncorrected volume pulses. After four revolutions of the input shaft, the alarm for the faulty switch will activate. 103 INDEX SW #2 FAULT Operates automatically, indicating a fault on input Switch #2 (on the right side of the input switch board). Volume pulses are counted using Switch #1 alone after the alarm occurs.

104 A/D FAULT Operates automatically if a fault occurs while processing any analog input measurement, such as pressure or temperature.

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105 PRESS OUT RANGE Alarm operates only if -

a) The pressure is measured outside the limits set into Item 10: Pressure High Limit, and Item 11: Pressure Low Limit; and

b) Alarm output: Item 72, 73, or 74, is set up to alarm Item 105.

106 TEMP OUT RANGE Alarm operates only if -

a) The gas temperature is measured Outside the limits set into Item 27: Gas Temperature Low Limit, and Item 28: Gas Temperature High Limit; and

b) Alarm Output: Item 72, 73, or 74, is set up to alarm Item 106.

107 TAMPER DETECTED Alarm operates only if -

a) The Mercor ECAT door is opened; and b) Alarm Output: Item 72, 73, or 74, is set up to alarm Item 107.

NOTE: If this alarm is activated, it will occur every time the case door is opened, so when the door is opened legitimately, the alarm must be cleared. 222 DAILY CORVOL ALM Operates automatically when the DAILY (Audit Trail option CORVOL in Item 223 exceeds the only) limit set into Item 221: Daily Corrected Volume Limit. An alarm is indicated in the numerical display (Display 1) by a decimal point appearing between each digit of the corrected volume display. This occurs only when the Mercor ECAT is operating in the Corrector Mode. Identifying Alarms After it’s recognized in the Corrector Mode, an alarm can be identified by accessing Meter Reader Mode by stroking the magnet wand to the proper touch point on the door near the window. The alphanumeric display (Display 2) wall read PLEASE WAIT ...... while the unit wakes up. During this time, the Mercor ECAT will take all measurements and then display the alarm item description in Display 2 and all ones (l’s) in Display 1. For example, if a low limit pressure setting has been programmed in the unit and the pressure has gone below that setting at any time, Display 2 will read PRESS OUT RANGE and Display 1 will read 11111111.

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Checking and Clearing Alarms Alarms are checked and cleared in the Calibration Mode. After identifying in the Meter Reader Mode which alarm (or alarms) has been activated, go to the Calibration Mode. Open the outer door and press the Mi wake-up button, then key-in the five digit Calibration Access Code. Display 1 will show a dash (-) for each digit of the number keyed in. Then press ENTR. Display 2 will read PLEASE WAIT…….. while the unit takes readings of pressure and temperature. Display 2 will then read SELECT FUNCTION while Display 1 reads 00000000. There are two ways to clear alarms. The most direct method is to press the AUX key on the keypad. Display 2 will read CHECK ALARMS? while Display 1 remains blank. Press YES and Display 2 will read the specific alarm identification while Display 1 reads 11111111. Press YES and if additional alarms exist, they too will be identified with each YES keyed until all alarms have been displayed. Press YES and Display 2 reads CLEAR ALARMS? while Display 1 reads blank. Press YES and Display 2 will read ALARMS CLEARED. At this time all alarms have been cleared. Press EXIT to return to SELECT FUNCTION operation. Press EXIT again to return to Corrector Mode. NOTE: Clearing the alarm makes it immediately active, so if an alarm condition has not been corrected, another alarm will occur for that condition. A second way to clear alarms is to display the particular alarm item which has been identified. With Display 2 reading SELECT FUNCTION and Display 1 reading 00000000, let’s use our example of low-pressure level being exceeded. We key-in DISP first in order to get into the display function. The Corrected Volume will be displayed in Display 1 while Display 2 reads COR VOL CU FT. Next key-in the item number for pressure out of range, item 105, then ENTR. Display 1 will read 11111111 and Display 2 will read PRESS OUT RANGE. To clear this alarm, it is necessary to display all zeroes. Press CHNG and Display 1 will go blank. Then press the 0 key once, then ENTR and Display 1 will read 00000000. This indicates that the alarm has been cleared. NOTE: To check alarms while in the Calibration Mode, display the alarm items one by one. Those item numbers which display 11111111 in Display 1, indicate an alarm, while those item numbers which show 00000000 in Display 1 are not alarmed. Clear any items which indicate alarm by changing the display to all zeroes using the procedure in the preceding paragraph. Next key in 108, then ENTR. Display 1 will read 11111111 while Display 2 reads ALARMS OUTPUT. This item too must be cleared by changing Display 1 to zero. Press CHNG and Display 1 will go blank. Then press the 0 key, then ENTR and Display 1 will read 00000000, indicating this item alarm has been cleared. Item 108 indicates an alarm (11111111) whenever an alarm condition exists in any of the twenty-two alarm items. It is directly related to the display of the period or decimal point appearing between each digit of the corrected volume display when the Mercor ECAT is operating in the Corrector Mode. Press EXIT to return to SELECT FUNCTION operation. Press EXIT again to return to Corrector Mode.

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Transmitting Alarm Conditions If your Mercor ECAT is supplied with an optional pulse output board, this board contains a pair of output terminals (the two right-most terminals) on which an alarm condition is transmitted. The existence of any alarm condition which would cause the multiple decimal point display, will also cause an output over these two terminals. When the alarm trips, a single pulse signal is emitted. The pulse is approximately 50 milliseconds in duration. To distinguish which condition caused the alarm and to clear the alarm, it is necessary to go to the meter site to read the Mercor ECAT alarm items. Changing Alarm Levels Some alarm levels are preset at the factory prior to shipment. Other alarm levels may not necessarily be factory-preset but can be set by the user, if authorized, in the Calibration Mode. There are three alarm levels relating to battery operation. They are: 49 BATTERY LOLIM V Battery Low Limit Voltage 52 MEM BATT LOLIM V Memory Backup Battery Low Limit Voltage 60 BATT CYCLES LIM Number of Wakeup Cycles for Battery Usage Battery operation alarm levels are preset at the factory and should not normally be changed. User-Selectable Alarms The user-selectable alarms operate only if they have been programmed to do so, otherwise they are disabled. These alarms are described below. Pulser Alarms For any Mercor ECAT equipped with optional pulse output board(s) there are three pulser alarms, one for each channel. They are listed as: 66 PULSER A LIMIT Limit for pulses accumulated in Item 5 register. 67 PULSER B LIMIT Limit for pulses accumulated in Item 6 register. 68 PULSER C LIMIT Limit for pulses accumulated in Item 7 register. To set any of the above alarm levels, the desired item is displayed (Display 2) in order to enter the new value. For example, suppose you wish to set the limit of pulses accumulated in Item 5, A: ****** PULSES to a value of 10. First display Item 66. Display 2 will read PULSER A LIMIT while Display 1 reads a number. Press CHNG and Display 1 will go blank. Then press 10 ENTR and Display 2 continues to read PULSER A LIMIT while Display 1 reads 10. Repeat this routine for Items 67 and 68 if you wish to set up alarm levels for Pulser B and C.

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Pressure and Temperature Alarms There are four alarm levels relating to high or low pressure or temperature. They are: 10 PRESS HILIM Pressure High Limit 11 PRESS LOLIM Pressure Low Limit 27 GAS TEMP LOLIM Gas Temperature Low Limit 28 GAS TEMP HILIM Gas Temperature High Limit To set or change any of the above alarm levels, the corresponding item is displayed (Display 2) in order to enter the new value. For example, suppose you wish to set the pressure high limit at 30 psig. First, display Item 10. Display 2 will read PRESS HILIM PSIG while Display 1 reads a number. Press CHNG and Display 1 will go blank. Then press 30 ENTR and Display 2 continues to read PRES HILIM PSIG while Display 1 reads 30.00. Repeat this routine for Item 11 if you wish to set the pressure low limit, Item 27 if you wish to set the temperature low limit, and Item 28 if you wish to set the temperature high limit. Tamper Alarm If you wish to know whenever the door of the Mercor ECAT has been opened, you can enable or set the Tamper Detected Alarm. However, each time the door is opened, even by an authorized person, it will be necessary to clear alarms before returning the Mercor ECAT to Corrector Mode. Programming User-Selectable Alarms In order for the Mercor ECAT to display a user-selected alarm, it is necessary to program the alarm(s) into the unit through the Alarm Item Selection. There are three of these selection slots, identified as: 72 ALARM 1 ITEM # Alarm 1 Item # Selection 73 ALARM 2 ITEM # Alarm 2 Item # Selection 74 ALARM 3 ITEM # Alarm 3 Item # Selection For example, if you wish the Mercor ECAT to display an alarm for pressure out of range, merely enter this by Item # into the first alarm, Item 72., The pressure out of range alarm is Item 105. First, display Item 72. Display 2 will read ALARM 1 ITEM # while Display 1 reads a number. Press CHNG and Display 1 will go blank. Then press 105 ENTR and Display 2 continues to read ALARM 1 ITEM # while Display 1 reads 105. Now whenever the pressure goes outside the limits you have set in Items 10 and 11, an alarm will show as the first value displayed in the Meter Reader Mode. In the Corrector Mode, a series of decimal points will appear between each digit of the corrected volume display. To review the user-selectable alarms which must be programmed into Items 72, 73, and 74 (limited to three selectable alarms) they are: Alarm Occurs When: 69 PULSER A ALARM Item 5 value is exceeded 70 PULSER B ALARM Item 6 value is exceeded 71 PULSER C ALARM Item 7 value is exceeded 105 PRESS OUT RANGE High or low pressure limit is exceeded 106 TEMP OUT RANGE High or low temperature limit is exceeded

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107 TAMPER DETECTED Mercor ECAT door is opened 222 DAILY CORVOL ALM (Audit Trail Option only) Nominated daily volume is exceeded CHANGING OPERATING PAPAMETERS The Mercor ECAT is normally configured at the factory to meet the specifications set forth by the purchaser or user. These specifications would include some or all of the following:

- Meter index drive rate and units - Uncorrected volume units - Corrected volume units - Pressure range and units - Base pressure and units - Atmospheric pressure and units - Temperature units - Base temperature and units - Specific gravity for live supercompressibility - Mol % N2 for live supercompressibility - Mol % C02 for live supercompressibility -

If pressure, temperature or supercompressibility are specified to be fixed factor instead of live values, then these items may be specified for the Mercor ECAT.

- Pressure fixed factor - Temperature fixed factor - Supercompressibility fixed factor

Other items specified with the order would include the readings to be displayed in the Meter Reader Mode. Up to twenty (20) items may be selected and displayed when initiated by the magnet wand. The number and order of those items can be specified at the time of order or changed after receiving the instrument. If the items are not specified, the factory “default” selection will be: 61 DISPLAY TEST Display test 2 UNC VOL Uncorrected volume 0 COR VOL Corrected volume 8 GAS PRESS Gas pressure 26 GAS TEMP Gas temperature 43 TOTAL COR FACTOR Total correction factor 48 BATTERY VOLTAGE Battery voltage 59 BATT WAKE CYCLES Battery wake-up cycles 51 MEM BATT VOLTAGE Memory battery voltage 200 SITE ID Numeric site number 203 TIME Time of day 204 DATE Month, Day, Year If you wish to change parameters, this can be accomplished in the Calibration Mode depending on whether they have been authorized for change. Open the outer door and press the Mi button, then key-in the five-digit access code and press ENTR. Display 2 will read PLEASE WAIT……. while the unit takes readings of pressure and temperature. Display 2 will then read SELECT FUNCTION while Display 1 reads 00000000. Now display the item you wish to change by pressing DISP, then the item number, then ENTR. Display 2 will read the item description and Display 1 will read the existing value or code number. Now press CHNG and key in the new value or code number, then press ENTR. Display 2 will continue to read the item description while Display 1 will read the new value or code number.

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NOTE: If you get the reading “NOT ALLOWED” when you press CHNG, you cannot change this value or code while in the Calibration Mode. A list of the items which make up the Mercor ECAT operating parameters can be found in the EVC Quick Reference Guide. Also, the code numbers for the units of measure of volume, pressure and temperature, as well as scaling factors for output pulses are found in the guide. To Change Volume Units Volume values on the Mercor ECAT are displayed (Display 2) as:

0 COR VOL (units) Corrected volume (units) 1 PCOR VOL (units) Pressure corrected volume (units)

2 UNC VOL (units) Uncorrected volume (units) To configure or change the units of volume, the corresponding item is displayed (Display 2) in order to enter or change the code appearing in that item. From the Parameter List the following items apply: 90 COR VOL UN CODE Corrected volume units of measure code

91 PCOR VOL UN CODE Pressure corrected volume units of measure code 92 UNC VOL UN CODE Uncorrected volume units of measure code

The codes available for use are displayed (Display 1) and listed on the Code List as follows:

0 CU FT 11 m3X10 1 CU FTX1O 12 m3X100 2 CU FTXlOO 13 m3X1000 3 CF 14 CFX10000 4 CFX10 15 THERMS 5 CFX100 16 DKTHERMS 6 CFX1000 17 MJOULES 7 CCF 18 GJOULES 8 MCF 19 KILOCAL 9 m3X0.1 20 kWh 10 m3

For example, suppose the Mercor ECAT were configured at the factory for the volume units all to read in CCF and you wish to have corrected and pressure corrected volumes read out in MCF. First display the items that show which code is already entered into the Mercor ECAT. That would be items 90, 91 and 92. Follow the routine explained above to display Item 90 first, then you can press YES to scroll to Item 91, then press YES to scroll to Item 92. Each of these items will display 7, which is the code for CCF volume units. Press NO twice (or key in 90 ENTR) to go back to Item 90 display. Display 2 will read COR VOL UN CODE while Display 1 reads 7. Since you want to change this to code 8 (MCF) press CHNG and Display 1 will go blank. Then press 8 ENTR and Display 2 continues to read COR VOL UN CODE while Display 1 now reads 8. Repeat this routine for Item 91 so that pressure corrected volume will read out in MCF. Since there is no change in Item 92, the uncorrected volume units will remain CCF. If the Mercor ECAT has been in service and with accumulated volume readings on the various registers (Item 0, 1, and 2) and you wish to change volume units on any of these registers, you

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should move the decimal in the register to match the change you make in the volume unit. The decimal won’t appear after you change because the last digit on the right is always a whole number. For example, suppose the Mercor ECAT was originally configured to read all three registers in CF X 100 and you wanted the COR VOL and PCOR VOL registers (Items 0 and 1) to read in CF X 1000. After you change the volume unit codes in Items 90 and 91, go back to the display of Item 0 and also Item 1 and change both of these readings to place the decimal point between the next-to-last-digit and the last-digit of the display. This will assure that your reading continuity remains. To Blank Out Leading Digits In Volume Displays For those readouts relating to Volume, Display 1 can be configured or changed to blank out up to four of the leading digits. This permits reading all the corrected volume displays as well as all the uncorrected volume displays in the number of digits the user normally reads. To do this, Item 96 should be displayed for changing any and all of the corresponding Corrected Volume displays and Item 97 should be displayed for changing the Uncorrected Volume display. The codes for both Items 96 and 97 are: 0 — No Blank Digits 1 — Leading Digit Is B2~ank 2 — Leading Two Digit! Are Blank 3 — Leading Three Digits Are Blank 4 — Leading Four Digits Are Blank For example, suppose your normal practice is to read only 5 digits on any meter index. The corrected volume readings can be configured to this arrangement by first displaying Item 96. Display 2 will read COR VOL DISP RES and Display 1 reads some number. Refer to the code list for the listing of numbers. Since you wish to read 5 rather than 8 digits, you should blank the leading 3 digits and therefore Code 3 is selected. Press CHNG, then 3, then. ENTR. Display 1 will read 3. Now when you display any of the Corrected Volume values (Items 0, 1, 3, and 4) they will read out in 5 digits. To change the uncorrected volume to 5 digits, display Item 97 and follow the same procedure as above. NOTE: The digits which have been blanked out are not lost. They keep accumulating over time and can be displayed whenever you wish by changing the number of blank digits to 0. To Change Pulser Setup Codes If the Mercor ECAT is furnished with volume pulsers, they can be configured to the user’s choice of both output and scaling. There are three separate values of volume which can be transmitted by the pulsers to a remote location. They are: Corrected Volume (Item 0), Pressure Corrected Volume (Item 1) and Uncorrected Volume (Item 2). There are three output pulsers: Pulser A, Pulser B and Pulser C. Each pulser can be configured to pulse the same or a different volume value and each pulser also can be scaled to whatever factor the user selects. The pulser volume codes are displayed (Display 2) as:

93 PULSR A VOL CODE

94 PULSR B VOL CODE

95 PULSR C VOL CODE

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The codes available for use are displayed (Display 1) and listed on the Code List as follows:

Codes: 0 Selects COR VOL (Item 0)

1 Selects PCOR VOL (Item 1)

2 Selects UNC VOL (Item 2)

3 Selects NO OUT and turns of f pulser output For example, assume the Mercor ECAT was not yet configured for output pulsers and you wish to assign Corrected Volume to Pulser A, Pressure Corrected Volume to Pulser B and Uncorrected Volume to Pulser C. To set the output, first display Item 93. Display 2 will read PULSR A VOL CODE while Display 1 reads a number. From the Code List note that Code 0 corresponds to COR VOL. So press CHNG and Display 1 will go blank. Then press 0, then ENTR and Display 2 continues to read PULSR A VOL CODE while Display 1 reads 0. For Pulser B you can scroll to Item 94 by pressing YES key once or press 94 ENTR. Display 2 will read PULSR B VOL CODE while Display 1 reads a number. The Code List indicates that Code 1 corresponds to PCOR VOL, so press CHNG and Display 1 will go blank. Then press 1, then ENTR and Display 2 continues to read PULSR B VOL CODE while Display 1 reads 1. For Pulser C, scroll to Item 95 by pressing YES once or press 95 ENTR. Then press CHNG, then press 2, then ENTR and Display 2 reads PULSR C VOL CODE while Display 1 reads 2. The output pulse code is displayed (Display 2) as: 115 OUTPUT PULSE CD This code is used to change the output pulse rate to accommodate a particular type of data collection device. The codes available for use are displayed (Display 1) and listed on the Code List as follows: Codes: 0 - Selects pulse interval of 62.5 milliseconds 1 - Selects pulse interval of 0.5 seconds 2 - Selects pulse interval of 1 second 3 - Selects pulse interval of 125 milliseconds 4 - Selects pulse interval of 250 milliseconds To change the output pulse rate, display Item 115, Display 2 will read OUTPUT PULSE CD while Display 1 reads either 0 or 1. Note that Code 0 selects a pulse width of 62.5 milliseconds and Code 1 selects a pulse width of 0.5 seconds. Press CHNG and key in the desired code number, then press ENTR. Display 2 will read OUTPUT PULSE CD and Display 1 will read the code number you have selected. The standard pulse interval of 62.5 milliseconds meets the requirements of Metretek Communication Systems in a way which optimizes speed and minimizes, power usage. Longer pulse intervals may be required for other communication equipment and for electro-mechanical counters. Please note that the pulse interval determines the duration of an output state for a Form C (SPDT) output on a Pulse Output Board. The output type (form C or A) and the length of time a voltage is actually held is determined by the version of Pulse Output Board used. To Chance Pulser Scaling Factor The scaling of the pulsers is accomplished by using Items 56, 57 and 58, which in turn, relate to Item 0 (Corrected Volume), Item 1 (Pressure Corrected Volume), and Item 2 (Uncorrected Volume). The scaling factors are entered directly at actual values corresponding to the Item displayed (Display 2)

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56 PULSER A SCALING A Output Pulses Per Unit of Volume

57 PULSER B SCALING B Output Pulses Per Unit of Volume

58 PULSER C SCALING C Output Pulses Per Unit of Volume

For example, suppose the Mercor ECAT is configured for volume units in CCF (hundred cubic feet) and you want the pulser output to be in MCF (thousand cubic feet). You would want a scaling factor of 0.1 for each of the pulsers: A, B and C. To set or change the pulser scaling factors for volume, first display Item 56. Display 2 will read PULSER A SCALING while Display 1 reads a number. Since you want to scale the output pulse by one-tenth, press CHNG and Display 1 will go blank. Then press 0.1, then ENTR and Display 2 continues to read PULSER A SCALING while Display 1 reads .1000. Repeat this routine for Items 57 and 58 if you wish the scaling factors to be the same for each of the pulser outputs. The number of volume unit output counts which can be transmitted may be limited by meter wriggler speed. Output counts are generated at 16 counts per second, so a 10 RPM meter wriggler with a pulse every 6 seconds, would be limited to 6 X 16 = 96 counts. The scaling factor used must take this into account or output counts will accumulate faster than the pulser board can send them. This would cause counts to be accumulated in the storage registers for display in Items 5, 6, and 7.

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To Change Pulser Power Factor Each version of Pulse Output Board or combination of two Pulse Output Boards a different amount of power. To properly account for this power usage in accumulating battery cycles, a factor is assigned to convert output pulses into equivalent battery cycles. The factor is the number of output pulses which are the equivalent of one battery cycle. A single Version 1 board, for example, can generate 160 output pulses on all three channels with the equivalent of only 1 battery cycle. The following table shows the power factor which should be selected in Item 125, “PULSR PWR FACTOR.” 1st Board 2nd Board Factor Version 1 None 160 Version 2 None 22 Version 3 None 51 Version 1 Version 1 133 Version 1 Version 2 21 Version 1 Version 3 48 Version 2 Version 2 12 Version 2 Version 3 16 Version 3 Version 3 30 To Change Pressure Units The available pressure units and codes for the Mercor ECAT are: 0 - PSIG 2 - kPa 6 - kg/cm2 1 - PSIA 3 - MPa 7 - in wC 4 - BAR 8 - in Hg 5 - mBAR 9 - mm Hg To change pressure units, Item 87, Pressure Units Code, should be displayed and changed by following the procedure outlined above. Note that when PSIG is selected for gas pressure, base pressure and atmospheric pressure remain absolute and are given PSIA units of measure. To Change Base & Barometric Conditions The base and barometric conditions can be changed in the Calibration Mode, if authorized to do so. They are displayed as follows: 13 BASEPRESS Base Pressure 14 ATMPRESS Contract Atmospheric Pressure 34 BASE TEMP Base Temperature Suppose the barometric pressure is to be changed due to moving the Mercor ECAT to a different elevation above sea level. First display Item 14. Display 2 will read ATM PRESS PSIA while Display 1 reads the currently used barometric pressure. Press CHNG and Display 1 will go blank. Now key-in the new barometric pressure, then press ENTR and Display 2 reads the new barometric pressure.

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To Change Meter Index Code The meter index rate is the amount of volume represented by one revolution of the meter wriggler. If the Mercor ECAT was factory configured for one rotation rate and you wish to change it, Item 98 is where this change can be made on the unit. The codes and units for Item 98 are: 0 - 1 CF 5 - 0.1m3 1 - 5 CF 6 - 1m3 2 - 10 CF 7 - 10m3 3 - 100 CF 8 - 100m3 4 - 1000 CF Suppose the Mercor ECAT was originally configured for a 100 cu. ft. meter and you wish to install it on a 10 cu. ft. meter. Follow the routine given above to display Item 98, the Meter Index Code. Display 2 will read METER INDEX CODE and Display 1 will read 3. Refer to the Code List for a listing of Codes. Note that Code 3 corresponds to 100 CF drive. Since you wish to change this to Code 2 for a 10 CF drive meter, press CHNG and Display 1 will go blank. Then press 2 ENTR and Display 2 continues to read METER INDEX CODE while Display 1 now reads 2. For meters with odd index dial rates which do not match any of the units above, there is a METER SCALING factor, Item 14. This provides an additional factor with four decimal places which is used in conjunction with the Meter Index Code in Item 98. To Change Magnet Read Items The Mercor ECAT operates in the Meter Reader Mode when a magnet wand is positioned near the display window on the door. In this mode, the meter reader can step through a sequence of readings which have been previously set up. These readings include alarms as well as a list of up to 20 values, if desired. To configure or change any of the items you wish the magnet positioning to display in sequence, the entries are made through the use of Items 75 through 86. The sequence of magnet stepping always begins with any alarms which may be activated, followed by Item 75, then 76 and so on. So the first value you wish to display should be entered in Item 75, them Item 76 should have the second value you wish to see, Item 77 the third value and so on. If you do not wish to use all 20 displays for the Magnet Read Operation, the last Item in the sequence should be configured with a 255. This signals the logic to end the Meter Reader Mode when this Item is reached and return to the Corrector Mode. Let’s look at an example. Suppose you wanted to configure the Mercor ECAT so that in the Meter Reader Mode, the magnet would bring up these readings in sequence: 61 DISPLAY TEST Display Test 2 UNC VOL Uncorrected Volume 8 GAS PRESS Gas Pressure. 26 GAS TEMP Gas Temperature 48 BATTERY VOLTAGE Battery Voltage

ECAT

The first magnet read display is Item 75, so display Item 75 through the keyboard. Display 2 will read MAG READ 1 ITEM # while Display 1 reads some number. Since you want Item 61 to display in this location press CHNG, then 61, then ENTR. Display 1 now reads 61. Now move on to Item 76 by pressing YES to scroll one position and Display 2 reads MAG READ 2 ITEM # while Display 1 reads some number. You want Item 2 to display in this location so press CHNG, then 2, and then ENTR. Display 1 now reads 2. Now move to Item 77 and enter Item 8 there, then on to Item 79 and enter Item 48 there. Since this is the last value you wish to see in the Magnet Read operation, you want to end the sequence there by moving to the next item, Item 80. Display 2 reads MAG READ 6 ITEM #, while Display 1 reads some number. The number 255 ends the sequence so press CHNG, then 255, and then ENTR. Display 1 now reads 255. Return to Corrector Mode by pressing EXIT twice. Then check your entries by stepping through the magnet read sequence in the Meter Reader Mode. When you step out of the fifth read in this example (you had configured in 5 Items) the Mercor ECAT should return to the Corrector Mode. Fixed Factors Fixed factors can be applied in place of live values for pressure, temperature and supercompressibility, if desired. The access to fixed factoring is through Items 109, 110 and 111 on the Display. This enables the user to switch from live or sensed values of either pressure or temperature and substitute a fixed value in its place. Or a fixed Supercompressibility factor can be used instead of the Mercor ECAT making the calculation each time the pressure and temperature are sensed. To configure or change whether a fixed factor will be used, the corresponding item is displayed in order to enter or change the code appearing in that item. From the Parameter List, the following items apply: 109 FIXED PRESS FACT Fixed Pressure Factor Enable

110 FIXED SUPER FACT Fixed Supercompressibility Factor Enable 111 FIXED TEMP FACT Fixed Temperature Factor Enable

The codes to use are listed in the Code List as follows: 0 - No Fixed Factor 1 - Fixed Factor 2 - Fixed Factor Temperature, but with Live Measured Temperature Used for Supercompressibility Computation

Items 109 and 110 should therefore read either 0 for No Fixed Factor (live reading) or 1 for Fixed Factor. Item 111 has an additional code of “2” to permit a temperature measurement to be used in the supercompressibility calculation even though it is not used in the correction factor. This is included to allow a Mercor ECAT used on a temperature compensated meter to use a measured temperature for Supercompressibility.

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To configure or change the actual value of a fixed factor, the corresponding item is displayed in order to enter that value. From the Parameter List, the following items apply: 44 PRESS COR FACTOR Pressure Correction Factor 45 TEMP COR FACTOR Temperature Correction Factor 47 UNSQUARED SUPER Supercompressibility Factor Remember that the access to the fixed factor function must first be configured or changed through Items 109, 110 and 111 and then the factor itself is entered into the Mercor ECAT through Items 44, 45, and 47. For example, suppose you wish to install the Mercor ECAT on a temperature compensated meter, so therefore you would not want the corrector to make a calculation for temperature. Assume that the Mercor ECAT was configured at the factory to sense the gas temperature, then calculate and apply the temperature factor to the metered volume. First display the item which shows which code is entered into the Mercor ECAT. That would be Item 111 and when it is displayed, Display 2 will read FIXED TEMP FACT while Display 1 reads 0, which is the code for No Fixed Factor. Press CHNG, then press 1, then ENTR. Display 1 now reads 1 which is the code for Fixed Factor enable. Code 2 could also be used in this situation to provide a live temperature reading for supercompressibility. If Code 1 is selected, then the temperature in Item 26, GAS TEMP, will be used as a fixed flowing temperature in the Supercompressibility calculation. To change Item 26 to the desired average flowing temperature, you must authorize change to Item 26 in the configuration access. The temperature factor must now be entered into the Mercor ECAT. To do this, display the item by pressing 45 ENTR in the Display Mode. Display 2 will read TEMP COR FACTOR while Display 1 reads some number. Since you want to enter a factor of 1 for the temperature factor, press CHNG, then press 1, then ENTR and Display 1 will read 1.0000. Now the Mercor ECAT will be applying a temperature correction factor of 1 to the metered volume. The Supercompressibility Factor is normally a dynamic function of gas temperature. With a fixed temperature factor, the average flowing temperature should be entered as GAS TEMP (Item 26). This must be done to provide the correct average flowing temperature for supercompressibility if supercompressibility is a live function of gas pressure. An additional fixed factor item is available for use, if required. It is identified in the Parameter List as: 46 AUX COR FACTOR Auxiliary Correction Factor This permits you to enter a factor to account for other correction, such as water vapor content, meter proof other than 1.0000, or the like. Please note: If you do not want this correction factor applied to the volume calculations, set this factor at 1.0000.

ECAT

PARAMETER ITEM LIST All items which make up the operating parameters, codes, alarms, calibration references, voltage levels and other information relative to operation or configuration of the Mercor ECAT are listed below. Item Codes that offer a numeric coded selection are displayed on the following pages as bold characters. The ECAT displays and stores the selection as a numeric value, however MasterLink software converts this numeric value into the associated message when displayed on the computer screen or printed reports. * To Reset, use keypad or MasterLink to change the item value to equal the current value. ITEM NO. ECAT Legend on LCD #2 Description 000 COR VOL Volume corrected to base conditions. 001 PCORVOL Volume corrected to pressure base, with out

supercompressibility. 002 UNC VOL Volume uncorrected, should agree with the

mechanical index reading. 003 COR VOL @LO PRES Volume of gas metered at pressure lower than

selected low limit(Item 11), corrected to base conditions.

004 COR VOL @HI TEMP Volume of gas metered at temperature above

selected high limit (Item 28), corrected to base conditions.

005 A: NO OUT PULSES Number of Pulser A output pulses remaining from last wakeup period, waiting to be sent to remote point.

006 B: NO OUT PULSES Number of Pulser B output pulses remaining from last wakeup period, waiting to be sent to remote point.

007 C: NO OUT PULSES Number of Pulser A output pulses remaining from last wakeup period, waiting to be sent to remote point.

008 GAS PRESS Gas pressure measured at the last wakeup and used in calculating the pressure correction factor. If the instrument is fixed factored for pressure, this value is used in the supercompressibility calculations, if super is active.

009 MAX PRESS Highest pressure observed by the unit since last reset.*

ITEM NO. ECAT Legend on LCD #2 Description 010 PRES HILIM High limit for pressure, initiates alarm, if exceeded.

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Default = 099999.99

011 PRES LOLIM Low limit for pressure, initiates alarm, if exceeded. Also used with Item 003. Default = 0.00

012 ATM CALREF Atmospheric pressure entered by the calibrator during the most recent keypad calibration of an absolute pressure transducer. Default = 0.0000

013 BASE PRESS Base pressure per the contract, used in calculating pressure correction factor. Default = 14.7000

014 ATM PRESS Average atmospheric pressure per the contract, used in calculating pressure correction factor. Default = 14.7000

015 REF PRES#1 The pressure value set in during the previous keypad PZERO calibration. Default = 0.00

016 REF PRES#2 The pressure value set in during the previous keypad PCAL calibration. Default = 0.00

017 PCAL ZERO The current pressure transducer’s zero offset calibration constant. The value is normally very close to 0.0000 and is recalculated on each Pressure Zero Calibration. Default = 0.0000

018 1 PREV PCAL ZERO The ZERO offset pressure calibration constant from the first previous calibration. Default = 0.0000

019 2 PREV PCAL ZERO The ZERO offset pressure calibration constant from the second previous calibration. Default = 0.0000

ECAT

ITEM NO. ECAT Legend on LCD #2 Description 020 PCAL SPAN The current pressure transducer’s calibration span

factor. The value is normally very close to 1.0000 and is recalculated on each Pressure Span Calibration. Default = 1.0000

021 1 PREV PCAL SPAN The first previous pressure calibration span factor.

Default = 1.0000

022 2 PREV PCAL SPAN The second previous pressure calibration span factor. Default = 1.0000

023 MIN PCAL PT DIF% The configurable spread or difference in % of full scale pressure range required between PZERO and PCAL calibration points. Default = 50.0000

024 XCESS PCAL CHNG% The configurable maximum allowable change in % of full scale for PZERO and PCAL calibration points. Default = 2.0000

025 TRANSDUCER RANGE The upper range limit of the installed pressure transducer always expressed in PSI. Default = 100.00

026 GAS TEMP Gas temperature measured at the last wake-up and used in calculating the temperature correction factor. If the instrument is fixed factored for temperature, this value is used in the supercompressibility calculations, if super is active. Default = 0.00

027 GAS TEMP LOLIM Low limit for temperature, initiates alarm if exceeded. Default = -35.00

028 GAS TEMP HILIM High limit for temperature, initiates alarm if exceeded. Also used with Item 004. Default = 165.00

029 REF TEMP #1 The reference temperature applied to the temperature probe during the previous ZERO calibration. Default = 0.00

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ITEM NO. ECAT Legend on LCD #2 Description 030 REF TEMP #2 The reference temperature applied to the temperature

probe during the previous TCAL calibration. Default = 0.00

031 CASE TEMP Temperature measured inside instrument case at last wake-up. Default = 0.00

032 CASE TEMP MAX Highest case temperature measured by the unit since last reset.* Default = -40.00

033 CASE TEMP MIN Lowest case temperature measured by the unit since last reset.* Default = 099999.99

034 BASE TEMP Base temperature per the contract, used to calculate temperature correction factor. Default = 60.00

035 TCAL ZERO The current temperature probe’s ZERO offset

calibration constant. The value is normally very close to 0.0000 and is recalculated on each Temperature Zero Calibration. Default = 0.0000

036 1 PREV TCAL ZERO The ZERO offset temperature calibration constant from the first previous calibration. Default = 0.0000

037 2 PREV TCAL ZERO The ZERO offset temperature calibration constant from the second previous calibration. Default = 0.0000

038 TCAL SPAN The current temperature probe’s calibration span factor. The value is normally very close to 1.0000 and is recalculated on each Temperature Span Calibration. Default = 1.0000

039 1 PREV TCAL SPAN The first previous temperature calibration span factor. Default = 1.0000

ECAT

ITEM NO. ECAT Legend on LCD #2 Description 040 2 PREV TCAL SPAN The second previous temperature calibration span

factor. Default = 1.0000

041 MIN TCAL PT DIF% The configurable spread or difference in % of the temperature’s full range of 210.00 degrees (-40 to +170 F) required between TZERO and TCAL calibration points. Default = 10.0000

042 XCESS TCAL CHNG% The configurable maximum allowable change in % of full range for TZERO and TCAL calibration points. Default = 2.0000

043 TOTAL COR FACTOR Total correction factor calculated at the last wake-up and is the product of the values at Items 44 x 45 x 46 x (47)2. Default = 1.0000

044 PRESS COR FACTOR Pressure correction factor calculated at the last wake- up from Items 008, 013, and 014, if item 109 is set for LIVE. May be fixed factored to any value entered by user, if item 109 is set for FIXED. Default = 1.0000

045 TEMP COR FACTOR Temperature correction factor calculated at the last wake-up from Items 026 and 034, if item 111 is set for LIVE. May be fixed factored to any value entered by user, if item 111 is set for FIXED. Default = 1.0000

046 AUX COR FACTOR Factor to provide for other possible corrections to metered volume, i.e. Water Vapor Content, Therms, etc. If not applicable, set to 1.0000. Default = 1.0000

047 UNSQUARED SUPER AGA 3 and NX-19 Supercompressibility factor calculated at the last wake-up from Items 008, 026, 053, 054 and 055, if item 110 is set for LIVE. May be fixed factored to any value entered by the user, if item 110 is set for FIXED. Default = 1.0000

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ITEM NO. ECAT Legend on LCD #2 Description 048 BATTERY VOLTAGE Main battery voltage measured at last wake-up.

Default = 0.00

049 BATTERY LOLIM V Low limit for main battery voltage, initiates alarm if voltage drops below this value. Default = 5.50

050 SHUTDOWN VOLTAGE The instrument’s electronics will shutdown and display “..H.E.L.P..” on the upper LCD display if the main battery reaches this voltage value. The "..H.E.L.P..” message is an indication that the main battery is dead and needs replaced. Default = 4.80

051 MEM BATT VOLTS Memory battery voltage measured at last wake-up.

Default = 0.00

052 MEM BATT LOLIM V Low limit for memory battery voltage, initiates alarm if voltage drops below this value. Default = 2.10

053 SP GR FOR SUPER Specific gravity used for calculating NX-19 Supercompressibility factor. Default = 0.6000

054 % N2 FOR SUPER Percentage of Nitrogen molecules used when calculating the NX-19 supercompressibility factor. Default = 0.0000

055 % CO2 FOR SUPER Percentage of Carbon Dioxide molecules used when calculating the NX-19 supercompressibility factor. Default = 0.0000

056 PULSER A SCALING Scaling factor that determines the volume per pulse at

channel A output. Default = 1.0000

057 PULSER B SCALING Scaling factor that determines the volume per pulse at channel B output. Default = 1.0000

ECAT

ITEM NO. ECAT Legend on LCD #2 Description 058 PULSER C SCALING Scaling factor that determines the volume per pulse at

channel C output. Default = 1.0000

059 BATT WAKE CYCLES Number of times the unit woke up to perform calculations since last reset. Also includes the equivalent wake cycles produced during all user access. Default = 0

060 BATT CYCLES LIM Limit for the number of wakeup cycles. Initiates alarm when exceeded. Used as early warning to change main battery pack. If a DCPS is installed, set the value to 0 to disable this alarm feature. Default =

10000000 Lithium Battery Pack 3000000 Alkaline Battery Pack

061 DISPLAY TEST A test pattern that displays all segments and decimal points of the upper LCD, eight digit numeric display. Example: 8.8.8.8.8.8.8.8

062 SERIAL NUMBER Factory assigned Instrument Serial Number. Example: 09701234

09701234 - disregard the leading zero. 09701234 - 2 digit year of manufacture. 09701234 - 5 digit sequence # during the

year of manufacture. Default = 00000000

063 MIN PRESS Lowest pressure observed since last reset.* Default = 099999.99

064 GAS TEMP MAX Highest temperature observed since last reset.* Default = -40.00

065 GAS TEMP MIN Lowest temperature observed since last reset.* Default = 099999.99

066 PULSER A LIMIT Limit for pulses accumulated in Item 5 register. Initiates alarm when exceeded. See section on Pulser Alarms. Default = 99999999

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ITEM NO. ECAT Legend on LCD #2 Description 067 PULSER B LIMIT Limit for pulses accumulated in Item 6 register.

Initiates alarm when exceeded. See section on Pulser Alarms. Default = 99999999

068 PULSER C LIMIT Limit for pulses accumulated in Item 7 register. Initiates alarm when exceeded. See section on Pulser Alarms. Default = 99999999

069 PULSER A ALARM If the value at Item 5 (Pulser A) exceeds the Pulser A

Limit (Item 66) an alarm is initiated. The upper display will read 11111111 for an active alarm, or 00000000 for no alarm. See section on Pulser Alarms. Default = 00000000

070 PULSER B ALARM If the value at Item 6 (Pulser B) exceeds the Pulser B Limit (Item 67) an alarm is initiated. The upper display will read 11111111 for an active alarm, or 00000000 for no alarm. See section on Pulser Alarms. Default = 00000000

071 PULSER C ALARM If the value at Item 7 (Pulser C) exceeds the Pulser C

Limit (Item 68) an alarm is initiated. The upper display will read 11111111 for an active alarm, or 00000000 for no alarm. See section on Pulser Alarms. Default = 00000000

072 ALARM 1 ITEM # Item number for first of three selectable alarms. Intended choices are: 0, 105, 106 or 107. Default = 0

073 ALARM 2 ITEM # Item number for second of three selectable alarms. Intended choices are: 0, 105, 106 or 107. Default = 0

074 ALARM 3 ITEM # Item number for third of three selectable alarms. Intended choices are: 0, 105, 106 or 107. Default = 0

ECAT

ITEM NO. ECAT Legend on LCD #2 Description 075 MAG LIST 2 ITM 1 Item number of the first Mag Read Item selection for

MAG LIST #2. The display of this selection will follow the display of LIVE Parameters (if enabled) or the last MAG LIST 1 ITEM (if enabled). If neither LIVE parameters nor MAG LIST 1 ITEMs are enabled, this will be the first Mag Read Item to be displayed. Any of the ECAT item numbers may be entered as a Mag Read Item. Default = 61 (Display Test)

076 MAG LIST 2 ITM 2 Item number of the next Mag Read Item selection. Any item code may be selected, or if no more MAG LIST items are desired, enter the value 255 for this item to indicate the End-of-List. Default = 002 (Unc Vol)

077 MAG LIST 2 ITM 3 Same as Item 76 above. Default = 000 (Cor Vol)

078 MAG LIST 2 ITM 4 Same as Item 76 above. Default = 008 (Gas Pressure)

079 MAG LIST 2 ITM 5 Same as Item 76 above. Default = 026 (Gas Temperature)

080 MAG LIST 2 ITM 6 Same as Item 76 above. Default = 043 (Total Corr Factor)

081 MAG LIST 2 ITM 7 Same as Item 76 above. Default = 048 (Battery Voltage)

082 MAG LIST 2 ITM 8 Same as Item 76 above. Default = 059 (Wake Cycles)

083 MAG LIST 2 ITM 9 Same as Item 76 above. Default = 051 (Mem Batt Voltage)

084 MAG LIST 2 ITM10 Same as Item 76 above. Default = 200 (Site ID #)

085 MAG LIST 2 ITM11 Same as Item 76 above. Default = 203 (Time)

086 MAG LIST 2 ITM12 Same as Item 76 above. Default = 204 (Date)

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ITEM NO. ECAT Legend on LCD #2 Description 087 PRESS UNITS CODE Code (0-9) that selects the unit of measure for Gas

Pressure (008). Select: 0 - PSIG Default 5 - mBAR

1 - PSIA 6 - KGcm2 2 - kPa 7 - in WC 3 - mPa 8 - in HG 4 - BAR 9 – mmHG

088 PRESS DISPL RES Code (0-4) that selects the number of positions to the right of decimal point in the pressure display. Select: 0 - x x x x x x x x

1 - x x x x x x x.x 2 - x x x x x x.x x Default 3 - x x x x x.x x x 4 - x x x x.x x x x

089 TEMP UNITS CODE Code (0-3) that selects the unit of measure for Gas Temperature (026). Select: 0 - Degrees F. Default

1 - Degrees C 2 - Degrees R. 3 - Degrees K.

090 COR VOL UN CODE Code (0-20, below) that selects the unit of measure for corrected Volume (000). Default = 8 (MCF)

091 PCOR VOL UN CODE Code (0-20, below) that selects the unit of measure for Pressure Corrected Volume (001). Default = 8 (MCF)

092 UNC VOL UN CODE Code (0-20, below) that selects the unit of measure for Uncorrected Volume (002). Default = 7 (CCF) Possible selections for items 090, 091and 092:

0 - CU FT 11 - m3x10 1 - CU FTx10 12 - m3x100

To properly use selections 15 - 20 2 - CUFTx100 13 - m3x1000 at item 090, the appropriate energy 3 - CF 14 - CFx10000 factor must be manually placed into 4 - CFx10 15 - THERMS item 142 (Gas Energy Value). 5 - CFx100 16 - DKTHERMS

6 - CFx1000 17 - MJOULES 7 - CCF 18 - GJOULES 8 - MCF 19 - KILOCAL 9 - m3x0.1 20 - KILOWATTHR 10 - m3

ECAT

ITEM NO. ECAT Legend on LCD #2 Description 093 PULSR A VOL CODE Code (0-4) that selects the type of pulse information

to be transmitted out Pulser Channel A. Possible selections for items 093, 094 and 095: Select: 0 - COR VOL

1 - PCOR VOL 2 - UNC VOL 3 - NO OUTPUT Default 4 - TIME

Note: TIME can only be used with a Form-A Output to provide a reset pulse at the top of each hour.

094 PULSR B VOL CODE Code (0-4) that selects the type of pulse information to be transmitted out Pulser Channel B. See list of codes at item 093.

095 PULSR C VOL CODE Code (0-4) that selects the type of pulse information to be transmitted out Pulser Channel C. See list of codes at item 093.

096 COR VOL DISP RES Code (0-4) that selects the number of blank leading digits in the corrected volume display. Select: 0 - NO BLANKS (8-digits) Default

1 - 1 BLANK (7-digits) 2 - 2 BLANK (6-digits) 3 - 3 BLANK (5-digits) 4 - 4 BLANK (4-digits)

097 UNC VOL DISP RES Code (0-4) that selects the number of blank leading digits in the uncorrected volume display. See list of codes at item 096.

098 METER INDEX CODE Code (0-8) that selects the value of each uncorrected input pulse. The selection should agree with the gas meter drive rate, i.e. the amount of uncorrected volume per output shaft rotation. Select: 0 - 1 CF 5 - .1m3

1 - 5 CF 6 - 1 m3 2 - 10 CF 7 - 10 m3 3 - 100 CF 8 - 100 m3 4 - 1000 CF Default

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ITEM NO. ECAT Legend on LCD #2 Description 099 BATTERY LOW During a wake-up, if the measurement for Item 048

(BATTERY VOLTAGE) is a value less than the value at Item 049 (BATTERY LOLIM V), an alarm is initiated. The upper LCD will display 11111111 for an active alarm, or 00000000 for no alarm. Default = 00000000

100 BATT CYCLES ALRM During a wake-up, if the computed value for Item 059 (BATT WAKE CYCLES) is greater than the value at Item 060 (BATT CYCLES LIM), an alarm is initiated. The upper LCD will display 11111111 for an active alarm, or 00000000 for no alarm. Default = 00000000

101 MEM BATTERY LOW During a wake-up, if the measurement for Item 051 (MEM BATT VOLTS) is a value less than the value at item 052 (MEM BATT LOLIM V), an alarm is initiated. The upper LCD will display 11111111 for an active alarm, or 00000000 for no alarm. Default = 00000000

102 INDEX SW#1 FAULT If index switch #1 fails to provide an input meter pulse within four meter rotations, an alarm is initiated. The upper LCD will display 11111111 for an active alarm, or 00000000 for no alarm. Default = 00000000

103 INDEX SW#2 FAULT If index switch #2 fails to provide an input meter pulse within four meter rotations, an alarm is initiated. The upper LCD will display 11111111 for an active alarm, or 00000000 for no alarm. Default = 00000000

104 A/D FAULT If the microprocessor detects an A/D fault (Analog to Digital), an alarm will be initiated. The upper LCD will display 11111111 for an active alarm, or 00000000 for no alarm. (This alarm is an indication of a hardware failure and the main circuit board should be replaced) Default = 00000000

ECAT

ITEM NO. ECAT Legend on LCD #2 Description 105 PRESS OUT RANGE During a wake-up, if the measurement for Item 008

(GAS PRESSURE) is a value less than the value at item 011 (PRES LOLIM) or greater than the value at Item 010 (PRES HILIM), an alarm is initiated. The upper LCD will display 11111111 for an active alarm, or 00000000 for no alarm. Default = 00000000 (Optional Alarm, see items 072, 073 and 074.)

106 TEMP OUT RANGE During a wake-up, if the measurement for Item 026 (GAS TEMP) is a value less than the value at Item 027 (GAS TEMP LOLIM) or greater than the value at Item 028 (GAS TEMP HILIM), an alarm is initiated. The upper LCD will display 11111111 for an active alarm, or 00000000 for no alarm. Default = 00000000 (Optional Alarm, see items 072, 073 and 074.)

107 TAMPER DETECTED During a wake-up, if the microprocessor detects

that the ECAT door had been opened any time since the last wake-up, an alarm is initiated. The upper LCD will display 11111111 for an active alarm, or 00000000 for no alarm. Default = 00000000 (Optional Alarm, see items 072, 073 and 074.)

108 ALARMS OUTPUT Displays 11111111 to indicate that a standard alarm

(069-071, 099-104 or 222) or a selected optional alarm (105-107) has become active, otherwise it will display 00000000. Default = 00000000

NOTE:When any standard alarm, or any selected optional alarm becomes active, an alarm pulse is transmitted out the alarm pulse channel and the decimal points are “turned-on” in the upper LCD.

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ITEM NO. ECAT Legend on LCD #2 Description 109 FIXED PRESS FACT Code (0 or 1) that selects Live or Fixed Factor

Pressure. When enabled for fixed factor, the value entered at Item 044 will be used for pressure correction instead of a live calculations based on the input from a pressure transducer. NOTE: if item 109 is “Fixed”, a value must be entered at Item 044. It is also necessary to enter a value at Item 008 (Gas pressure) if Supercompressibility (item 110) is “Live”. Select: 0 - No Fixed Factor (Live) Default

1 - Fixed Factor

110 FIXED SUPER FACT Code (0 or 1) that selects Live or Fixed Supercompressibility. When enabled for fixed Super, the value entered at Item 047 will be used for supercompressibility correction, instead of a live calculation based on; pressure, temperature, specific gravity, % N2 and % CO2. NOTE: if Item 110 is “Fixed”, a value must be entered at Item 047. Select: 0 - No Fixed Factor (Live) Default

1 - Fixed Factor

111 FIXED TEMP FACT Code (0 - 2) that selects Live or Fixed Factor Temperature. When enabled for fixed factor (code 1), the value entered at Item 045 will be used for temperature correction, instead of live calculations based on the temperature probe. NOTE: if item 111 is “Fixed”, a value must be entered at Item 045. It is also necessary to enter a value at Item 026 (Gas Temperature) if Supercompressibility (item 110) is “Live”. If the selection for Item 111 is code 2 (Super), then the total correction factor will include the value entered at Item 045 while using the gas temperature from the temperature probe for supercompressibility calculations. This intended for use with TC meters. Select: 0 - No Fixed Factor (Live) Default

1 - Fixed Factor 2 – Super (Fixed Factor Temperature, but with Live Measured Temperature (at item 026) used for Supercompressibility Computations.

ECAT

ITEM NO. ECAT Legend on LCD #2 Description 112 TRANSDUCER TYPE Code (0 or 1) that selects the type of pressure

transducer installed. Since the equations to calculate pressure correction and supercompressibility are dependent on the transducer type, make certain the selection is the same as the installed transducer. Select: 0 - Gauge Default

1 - Absolute

113 HI RES COR VOL Display of the fractional value for Item 000 (Corrected Volume) with four decimal places. To make room for the display of the decimal portion of the number, High Resolution Cor Vol does not display the four left-most digits of the corrected volume. Example: if the value at Item 000 equals ‘12345678 MCF’, then Item 113 might display ‘5678.2477 MCF’. The four decimal places also permit field calibration/accuracy checks using a small number of meter revolutions. Default = 0000.0000

114 METER SCALING Scaling factor applied to the uncorrected volume selected at Item 098 (Meter Index Rate). Usually used if the volume input is a value other than 0.1, 1, 5, 10, 100, 1000. Example: If a meter provides a 2 CF pulse per revolution, set item 098 for “1 CF” (code 0) and item 114 for a value of “2.0000” Default = 1.0000

115 OUTPUT PULSE CD Code (0 - 4) to provide slower pulse rates for remote counter/readout devices requiring more time to process the volume pulses. For a Form-C output, the selected value represents the pulse width, in seconds. For Form-A output, the selected value represents one-half of the total pulse cycle. One Form-A pulse cycle is equal to the pulse- on time plus the pulse-off time. The standard pulse-on time for a Form-A output is 62.5 milliseconds. The pulse-off time can be varied by the selection of item 115. Select: 0 - 0.0625 Sec. Default

1 - 0.5000 Sec. 2 - 1.0000 Sec. 4 - 0.2500 Sec.

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ITEM NO. ECAT Legend on LCD #2 Description 116 SQUARED SUPER Supercompressibility factor squared,

(Fpv)2, used in volume equation. Default = 1.0000

117 TAG NUMBER User assigned tag number for instrument. Default = 00000000

118 REF NUMBER #1 User assigned reference number. Default = 00000000

119 REF NUMBER #2 Second user assigned reference number. Default = 00000000

120 PRESS CAL DATE Date of the most recent change to PCAL ZERO (Item 017), the date is automatically inserted when exiting the PCAL ZERO function Default = 00-00-00

121 TEMP CAL DATE Date of the most recent change to TCAL ZERO (Item 035), the date is automatically inserted when exiting the PCAL ZERO function Default = 00-00-00

122 FIRMWARE This parameter is used to display the instrument’s operating firmware version number. The number r

reported should agree with the number found on the label of code proms U15 and U19. This number is obtained from the code prom and can not be changed through the computer keyboard or instrument keypad. Default = 5.24

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ITEM NO. ECAT Legend on LCD #2 Description 123 AUDIT TRL ENABLE Code (0 - 2) used to enable the optional Audit Trail

functions and displays (items greater than 200). For ECAT-X instruments, time related displays may be activated even though the data downloading option has not been installed. In an ECAT-X instrument, the memory chip has not been installed in the socket at U7. Select: 0 - Audit Trail disabled (ECAT-X)

1 – ECAT-X w/Audit Trail enabled for use with limited memory will provide approx. 11 days of hourly data).

2 -Audit Trail fully enabled for use with Default audit trail memory. (This is the AT option and will provide 41

days of hourly data.)

124 REVS PER WAKEUP This parameter is used to determine the number of meter revolutions (N) required before a full wake-up is initiated and new analog measurements are taken. The instrument will perform an intermediate wake-up when the meter rotation does not equal N. This power conservation feature can be used to reduce battery usage on fast meters that have fairly constant pressures and temperatures. Range - 0 to 15 Default = 1

125 PULSR PWR FACTOR Pulse Power Factor provides a method of assigning a

power consumption factor to output pulses to provide an accurate account of battery usage. Factors from 1 to 160 represent the number of output pulses which are equivalent to one wake-cycle. The following factors are used for different combinations of Pulse Output Boards Range - 1 to 160 Default = 160

126 BAUD RATE CODE Code (0 - 5) to select the instrument’s serial baud

rate. A communication error will result if the baud rate does not match the baud rate of the connected computer or modem. Select: 0 - 9600 Default

1 - 4800 2 - 2400 3 - 1200 4 - 600 5 – 300

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ITEM NO. ECAT Legend on LCD #2 Description 128 MAG ALARM ACKNOW Code (0 or 1) to enable or disable the clearing of all

active alarms using the mag wand. During the Meter Reader List, an “E.E.E.E.E.E.E.E” display will appear After scrolling through all active alarms, allow the instrument to time-out (1-minute) to clear all alarms. If the mag wand is used to scroll to the next mag list item before the “E.E.E.E.E.E.E.E” display times-out, the alarms will not be cleared. Select: 0 - Disabled Default

1 - Enabled 129 LIVE DISP ENABLE Code (0 - 3) to select the display of live gas pressure

and/or temperature as part of the meter reader list. If enabled, the live parameter will appear after the last Mag List 1 item has been displayed, but before any Mag List 2 items. Both live gas pressure and temperature have a 10 minute time-out instead of the usual 1 minute time-out for other mag list items. Select: 0 - NONE Default 2 - LIVE T

1 - LIVE P 3- -LIVE P&T

130 MAG LIST 1 ITEM 1 This Item Code is used to configure the first of several items that will be displayed in Meter Reader Mode. The display of this item follows the display of Site ID/ Site Address information on the alphanumeric LCD (if enabled) and/or the display of alarm information if any instrument alarms are active. The display of the second item appears after the next mag wand input. Any of the ECAT’s Item Codes may be entered as a Mag Read Item. See the section on using the Meter Reader List for more information. Default = 255

131 MAG LIST 1 ITEM 2 Item number of the next mag list 1 meter read selection. Any item code may be selected, or if no more mag list items are desired, enter a 255 for this item number to indicate the End-of-List. Default = 255

132 MAG LIST 1 ITEM 3 Same as 131 Default = 255 133 MAG LIST 1 ITEM 4 Same as 131 Default = 255 134 MAG LIST 1 ITEM 5 Same as 131 Default = 255 135 MAG LIST 1 ITEM 6 Same as 131 Default = 255

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ITEM NO. ECAT Legend on LCD #2 Description ———————————————————————————————————————— 136 ITEM # ENABLE Code (0 - 3) to select identification of the mag list

items. If enabled, the upper LCD will display the mag list sequence number, 3-dashes, and the item code number. The lower will display “SEQ# — ITEM #” to identify the numbers displayed in the upper LCD. The left two digits indicate the sequence number for either mag list 1 or mag list 2. If the first digit of the sequence # is a “0”, this indicates a mag list 1 item. If the first digit is not a “0”, this indicates a mag list 2 item. The last three digits on the right indicate the item code value that will be displayed on the next mag wand input. Note; Live Gas Pressure and Live Gas Temperature do not have mag list identifiers, as there are no item code numbers associated with live parameters. Select: 0 - NONE Default 2 - LIST 2

1 - LIST 1 3 - LIST 1&2

LCD Display Example: “05—048”. The ‘05’ indicates the 5th mag list 1item.The ‘048’ indicates that on the next magwand input, the value for Battery Voltage (Item Code 048) will be displayed. “01— 002” identifies the first item in mag list 1 as Uncorr Vol.” 1 002" identifies the first item in mag list 2 as Uncorr Vol.

137 XDCR RANGE The upper pressure range limit, automatically scaled to the pressure units selected at item 087. If PSI is the selected pressure unit, then item 137 will be the same as item 025. Note; the value at item 137 may be manually changed to a rounded-off number, if desired. Default = 100.00

138 TRANSDUCER SER# Serial number of the pressure transducer (printed on the transducer label), manually inserted at the factory. Default = 00000000

139 SERIAL LINK CODE Code (0 - 2) to define the instrument’s RS-232 serial Note; If AT-LINK is used to change data transfer with AT-LINK (does not affect DCU from TWO WAY to any other selection, transfers in f/w 4.0x). it can only be changed back to TWO Select: 0 - Two Way (Read and Write) Default WAY at the instrument’s keypad. 1 - Read Only

2 - Disabled (Will not Read or Write)

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ITEM NO. ECAT Legend on LCD #2 Description 140 ENERGY The equivalent gas energy based on corrected

volume (item 000) based on by the Gas Energy Value (item 142), updated every correction cycle. Default = 00000000

141 ENERGY UNIT CODE The code (0 - 5) that selects the unit of measure for Energy (140). Select: 0 - THERMS Default

1 - DKTHERMS 2 - MJOULES 3 - GJOULES 4 - KILOCAL 5 - KILOWATTHR

142 GAS ENERGY VALUE A user-provided value to indicate the amount of

energy contained in each volumetric unit of corrected volume. This value is a multiplier used to calculate Energy at item 140. The nominal Gas Energy Values for the various Energy Units (item 141) are as follows: - THERMS - 1000 BTU per ft3 of gas (Default) - DKTHERMS - 1000 BTU per ft3 of gas - MJOULES - 37259.00 Kilojoules per m3 of gas - GJOULES - 37259.00 Kilojoules per m3 of gas - KILOCAL - 8905.00 Kilocalories per m3 of gas - KILOWATTHR - 10349.73 Watt/Hr per m3 of gas

143 PRESS LOW ALARM During a wake cycle, if the measurement for Item 008 (GAS PRESSURE) is a value less than the value entered at Item 011 (PRES LOLIM), an instrument alarm is initiated. The upper display will read 11111111 for an active alarm, or 0000000 for no alarm. The Pressure Low Limit value is user selectable and is normally set somewhere between 0 and 50% of transducer range. Default = 00000000

144 TEMP LOW ALARM During a wake cycle, if the measurement for Item 026 (GAS TEMPERATURE) is a value less than the value entered at Item 027 (GAS TEMP LOLIM), an instrument alarm is initiated. The Temperature Low Limit value is user selectable and is normally set somewhere between 0 and 50% of transducer range. Default = 00000000

ECAT

ITEM NO. ECAT Legend on LCD #2 Description 145 PRESS HIGH ALARM During a wake cycle, if the measurement for Item 008

(GAS PRESSURE) is a value greater than the value entered at Item 010 (PRES HILIM), an instrument alarm is initiated. The upper display will read 11111111 for an active alarm, or 00000000 for no alarm. The Pressure High Limit value is user selectable and is normally set somewhere between 50 and 100% of transducer range. Default = 00000000

146 TEMP HIGH ALARM During a wake cycle, if the measurement for Item 026 (GAS TEMPERATURE) is a value greater than the value entered at Item 028 (GAS TEMP HILIM), an instrument alarm is initiated. The Temperature High Limit value is user selectable and is normally set somewhere between 50 and 100% of transducer range. Default = 00000000

147 COMPRESS TYPE Selection to allow the user to choose the type of gas compressibility calculation employed during each correction cycle wake-up. Selection “0” (NX-19) results in the implementation of AGA-3 / NX-19 Supercompressibility calculations. Selection “1” (AGA-8) results in the implementation of AGA-8 calculations. Select: 0 - NX-19 Default

1 - AGA-8 Note: Selecting AGA-8, items 053,054 and 055 are disabled, however, the values at these items may be changed for reference only. AGA8 software must be used to create a computer file (*.aga), which includes values for Specific Gravity = 0.6000, %N2 = 0.0000, %CO2 = 0.0000. The file must be transferred to the connected ECAT using “Transfer” | “Send AGA8 factors” with AT-Link Software version 5.00 or higher. Other values will require AGA-8 software to create a new file. 148 INCREMNTL ENERGY Same as item 140 (Energy) but is initialized to

00000000 after every Time-trigger log (item 202). Display shows the most recently logged value. Default = 00000000

149 EVENT LOG LOCK The function of the Event Logger is to record: Date, Time, UserID#, assigned Sequence Number, Before value and After value for changes made to instrument item values. By default, the Event Logger is ‘unlocked’, meaning old event records begin to be

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overwritten after 200 event changes. The Event Log Lock is a feature that can only be enabled using the instrument keypad. Once enabled (Locked), the functionality of the Event Log conforms to Canadian regulations as specified by Measurement Canada. Several key requirements include: after the Event Log Lock is selected, the lock is permanent, i.e. it cannot be changed back to “Unlocked”; when the number of event records in memory reaches the maximum of 200 records, the Event Log information must be downloaded to a computer before any additional instrument changes are permitted; new events are automatically numbered sequentially starting at zero; only changes that could affect “Billing” are recorded, all other ranges are not logged. Select: 0 - Unlocked Default

1 - Locked

163 RATE HIGH ALARM When Item 209 (INSTANTANEOUS FLOW RATE) is a value greater than the value entered at Item 164 RATE HIGH LIMIT), an instrument alarm is initiated. The upper display will read 1111111 for an active alarm, or 00000000 for no alarm. This alarm can be defeated by setting the value at Item 164 to its highest value of 99999.9. Default = 00000000

164 RATE HIGH LIMIT Limit for high flow rate, initiates an alarm if exceeded.

Default = 99999.99

165 RBX ALARM ENABLE The code (0-1) that defines the type of instrument alarm operation. When the RBX function (Report By Exception) is disabled, all instrument alarms operate As in previous versions of firmware, i.e., manual clear. When RBX is enabled, instrument alarms are automatically cleared after the alarm parameter returns to its normal operating range, buffered by a user specified dead band. Exceptions; A/D Fault, Switch Fault 1 & 2, and Tamper Detected. Both an Alarm and a Clear Alarm will trigger log entries in the instrument alarm log. Also see Items 237 & 174 for related functions. Select: 0 - Standard Alarms Default

1 - RBX Alarms 166 PRS D BAND **** A hysteresis band that buffers below the Press Hi limit

Item 010) and above the Press Lo limit (Item 011) when pressure alarms are automatically cleared in RBX operation. The user-specified value determines

ECAT

the magnitude of the band. Default = 5.00 PSIG

167 TMP DEAD BAND A hysteresis band that buffers below the Gas Temp Hi

limit (Item 028) and above the Gas Temp Lo limit Item 027) when temperature alarms are automatically cleared in RBX operation. The user specified value determines the magnitude of the band. Default = 10.00 F

168 BATT DEAD BAND A hysteresis band that buffers above the Battery Low

Limit Voltage (Item 049) when the main Battery Low alarm is automatically cleared in RBX operation. The user-specified value determines the magnitude of the band. Default = 1.00 Volt

169 RATE DEAD BAND A hysteresis band that buffers below the Rate High

Limit (Item 164) when the Rate High Alarm is automatically cleared in RBX operation. The user-specified value determines the magnitude of the band. Default = 2 MCF/HR

170 PROTOCOL CODE A Selection (0-1) to determine if a certain error code is

transmitted while attempting a serial link sign-on. when this function is set to “0”, (which is the correct setting for most applications) all instrument error codes are transmitted as in previous versions of firmware. When this option is set to “1”, the ECAT will not become master and will not send time-out errors in communication protocol. The selection of “1” is provided as a convenience for some 3rd party communication interfaces. Select: 0 - Standard Default

1 - No Time-out Error 171 TIMEOUT DELAY1 The time (in seconds) the instrument waits for the

protocol control character “ENQ” during instrument sign-on before issuing an error “21” (timeout error). This function is provided as a convenience for some 3rd party communication interfaces and under most situations, should not be changed from the Default setting. Range: 1 to 60 Default = 7

172 TIMEOUT DELAY2 The time (in seconds) the instrument waits for a valid

sign-on after receiving the protocol control character

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“ENQ” before issuing an error “21” (timeout error). This function is provided as a convenience for some 3rd party communication interfaces and under most situations, should not be changed from the Default setting. Range: 1 to 60 Default = 7

173 REPORT TRIGGER 9 Hardware reset of the microprocessor when the

instrument’s main power drops below 4.3 volts. This situation could occur while the instrument is ‘asleep’, therefore, would not produce a Low Battery Alarm or “HELP” shutdown. Select: 0 - Inactive

1 - Activated Default 174 REPORT TRIGGER 10 Any instrument alarm successfully cleared, either

manually or automatically through RBX. Clear Alarm will also provide an alarm output pulse and will change Item 176 (RBX ALARM EVENT) from “00000000” to “11111111”if Item 165 (RBX ALARM ENABLE) is set to RBX Alarms (code 1). Default =1

175 REPORT TRIGGER 11 Any user induced instrument Shutdown regardless of

how it was accomplished, i.e., using the keypad or through serial protocol (AT-Link) or 3rd party interfaces. For items 173 thru 175, code (0 - 1) activates or deactivates a particular Report Trigger. If deactivated, that particular type of an event will not appear as a time-stamped record in audit trail memory. Default =1

176 RBX ALARM EVENT This item provides an indication of RBX alarm activity

since last interrogation and is internally set to “11111111” when an alarm is activated or cleared. It must be externally cleared (set to “00000000”) after each interrogation (if needed) to determine a future status change. Default = 00000000

Trigger Legend RESET Trigger Legend CLR ALM Trigger Legend SHUTDN 177 PULSE REP PERIOD The time (in hours) that an alarm pulse will be

retransmitted if the current alarm(s) have not been

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acknowledged (read). Setting this item to “0” will disable this feature. Integers only, fractions not allowed. Range: 0 to 24 Default = 24

183 PREV DAY CORVOL Yesterday’s Daily Corrected Volume, i.e., the daily

corrected volume that is one day old on the day the instrument is accessed. This information is updated with the value at item 223 at the beginning of every new gas day. Note: The gas day begins at the time entered at item 205. Default = 00000000

184 PREV DAY UNCVOL Yesterday’s Daily Uncorrected Volume, i.e., the daily

uncorrected volume that is one day old on the day the instrument is accessed. This information is updated with the value at item 224 at the beginning of every new gas day. Note: The gas day begins at the time entered at item 205. Default = 00000000

185 PREDAY AV P Yesterday’s Daily Average Pressure (expressed in the pressure units selected at item 087), i.e., the daily average pressure that is one day old on the day the instrument is accessed. This information is updated with the value at item 256 at the beginning of every new gas day. Default = 0.00 Note: The gas day begins at the time entered at item 205. 186 PREDAY AV TEMP Yesterday’s Daily Average Temperature (expressed in the temperature units selected at item 088), i.e., the daily average temperature that is one day old on the day the instrument is accessed. This information is updated with the value at item 257 at the beginning of every new gas day. Note: The gas day begins at the time entered at item 205. Default = 0.00 187 AVG UNSQ SUP The calculated Unsquared Supercompressibility Factor (item 047) averaged over the selected Time Interval (item 202). This value is “flow weighted”, meaning calculations resulting from input meter pulses are the only values included in the average and relates exactly to Average

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Pressure (item 206) and Average Temperature (item 207). This is a running average, so the value displayed during instrument access is the most recent calculated value. Default = 1.0000 188 DAILY AV UNS SUP Same as item 187, except this value is the average for the current Gas Day. This is a running average, which is zeroed and begins a new calculation at the time entered at item 205. Therefore, the value displayed during instrument access is the most recent calculated value for the current gas day. Default = 1.0000 189 PREDAY AV UN SUP Yesterday’s Daily Unsquared Supercompressibility Factor, i.e., the daily unsquared supercompressibility factor that is one day old on the day the instrument is accessed. This information is updated with the value at item 188 at the beginning of every new gas day. Note: The gas day begins at the time entered at item 205. Default = 0.0000 190 DAILY ENERGY Same as item 140 (Energy), except this value is the running total for the current Gas Day, which is zeroed and begins a new calculation at the time entered at item 205. Therefore, the value displayed during instrument access is the most recent calculated value for the current gas day. Default = 00000000 191 PREV DAY ENERGY Yesterday’s Daily Energy, i.e., the daily energy that is one day old on the day the instrument is accessed. This information is updated with the value at item 190 at the beginning of every new gas day. Note: The gas day begins at the time entered at item 205. Default = 00000000 192 DAILY PK FLOW RT Same as item 210 (Peak Flow Rate), except this value is the peak flow rate for the current Gas Day, which is zeroed at the time entered at item 205. Therefore, the value displayed during instrument access is the peak flow rate, up to that point in time, during the current gas day. Default = 00000000 193 DAILY PK FLOW TM The ending hour time the Daily Peak Flow Rate (192) occurred during the current gas day.

ECAT

Default = 00 00 00 Item Code Reference - 42 194 PREDAY PK FLOW RT Yesterday’s Daily Peak Flow Rate, i.e., the daily peak flow rate that is one day old on the day the instrument is accessed. This information is updated with the value at item 192 at the beginning of every new gas day. Note: The gas day begins at the time entered at item 205. Default = 00000000 195 PREDAY PK FLO TM The ending hour time the Previous Daily Peak Flow Rate (194) occurred during the previous gas day. Default = 00 00 00 196 EVENT USER ID An identification number placed in the Event Log to identify the person that caused the change(s) to the instrument’s configuration. The Default value is “0” but may be voluntarily changed to any number between “0” & “99” (inclusive) when prompted during instrument access. Default = 0 197 MAX DIAL RATE The highest Instantaneous Dial Rate (item 218) since last reset.* Default = 0 198 MAX FLOW RATE The highest Instantaneous Flow Rate (item 209) since last reset.* Default = 0.00 199 DATE DD-MM-YY The calender date displayed with the first two digits as ‘DAY’, the second two digits as ‘MONTH’ and the last two digits as ‘YEAR’. Note; A date entered at this item number (199), will also enter the same date at item 204. However, if the Efent Log Lock (149) is set to “1”, then the Date Format for Item 262 wil also be changed to YY-MM-DD and cannot be changed to DD-MM-YY. Format: DD-MM-YY Default = 01-01-95 200 SITE ID User assigned, eight digit numeric site number. Limited to characters: 0-9. The “.” and “-” are not valid characters. Default = 00000000 201 SITE ID PART 2 Eight additional digits for the site number, if needed. Default = 00000000 202 INTERVAL User selected time periods that determines how often a time-stamp record is placed in audit trail memory

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Select: 15 (minutes) 30 (minutes) 60 (minutes) 24 (hours) Default 203 TIME Settable Real Time Clock that displays (live) hours, minutes, and seconds in 24- hour “military” time, i.e., 14: 30: 02 would be 2 seconds past 2:30 PM. Default = 12:00:00 204 DATE A numeric field indicating calender Month- Day-Year (MM-DD-YY), Day-Month- Year (DD-MM-YY) or Year-Month-Day (YY-MM-DD),depending on the Date Format selection at Item 262. The Date automatically tracks the days in the month, including leap year. Leading zeros are required where applicable. This Date (and Time, Item 203) is used to time-stamp records in Audit Trail, Event Logger and Alarm Logger memory. Note; The date entered at item 204 is also inserted at Item 199. Format: Determined by item 262 Default = 01-01-95 205 START TIME Settable start time for the gas day. Also the time of day when daily computations are zeroed and the next day computations begin. Default = 08 00 00 206 AVG PRESS Pressure averaged over the selected time interval (202) and is averaged for every input pulse, meaning that pressure is “weighted” by uncorrected volume. This relates exactly to the correction factors and is the equivalent of a pressure trace on a meter driven volume chart. This is a running average, so the value displayed is the most recent value calculated. Default = 0.00 207 AVG TEMP (Same description as AVG PRESS Item 206, but for temperature.) Default = 0.00 208 AVG FLOW RATE The average rate of flow for Corrected Volume (000) during the selected time interval (202) expressed in CORVOL units per hour. Example: If the COR VOL UN CODE (Item 090) is 7 (CCF) and 211,704 cubic feet of corrected volume were measured during the last log interval of 24 hours, the number displayed will be 88.21. Default = 0.00

ECAT

209 INST FLOW RATE The current instantaneous rate of flow for Corrected Volume (000), expressed in the selected CORVOL units (item 090) per hour. The value is equal to the most recent increment of CORVOL, divided by the length of time between the last two correction cycles. (The minimum acceptable time between correction cycles is one minute. If the meter is rotating faster than 1 RPM, the calculation is delayed until the time is equal to, or greater than, one minute. The display will show the most recently computed value. Default = 0.00 210 PEAK FLOW RATE The highest INST FLOW RATE (209) durring the current time interval (202), expressed in CORVOL units (090) per hour. Default = 0.00 211 PEAK HOUR CORVOL Peak hourly CORVOL measured during the 24 hour gas day determined by the START TIME (Item 205). The one hour time periods are fixed consecutive hours, i.e., 8:00 to 9:00, 9:00 to10:00, etc. They are not a moving one hour window. Default = 00000000 212 PEAK HR END TIME The ending hour time for PEAK HOUR CORVOL (211). Default = 00 00 00 213 PEAK HOUR DATE Date for PEAK HR END TIME (212). Format: Determined by item 262 Default 00-00-00 214 INTVL HI P Highest Gas Pressure (008) during the selected time interval (202), which is initialized (rezeroed) after each Time triggered log. The value displayed on the LCD indicates the peak pressure so far in the current time interval. Default = 0.00 215 INTVL LO P Lowest Gas Pressure (008) during the selected time interval (202), which is initialized (rezeroed) after each Time triggered log. The value displayed on the LCD indicates the minimum pressure so far in the current time interval. Default = 099999.99 216 INTVL HI TEMP Highest Gas Temperature (026) during the selected time interval (202), which is initialized (rezeroed) after each Time

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triggered log. The value displayed on the LCD indicates the peak temperature so far in the current time interval. Default = -40.00 217 INTVL LO TEMP Lowest Gas Temperature (026) during the selected time interval (202), which is initialized (rezeroed) after each Time triggered log. The value displayed on the LCD indicates the minimum temperature so far in the current time interval. Default = 099999.99 218 INST DIAL RATE “Instantaneous” meter clock rate derived from the UNCVOL meter pulses and expressed in Cubic Feet per hour or Cubic Meters per hour. Similar to INST FLOW RATE (209) including the 1 minute time limitation. Default = 0 219 PEAK DIAL RATE Highest value of Item 218 during the current time interval. Similar to PEAK FLOW RATE (210). Default = 0 220 NOMINATED CORVOL The nominated daily contract volume, with the value entered using the selected CORVOL units (090). When the DAILY CORVOL (223) reaches the NOMINATED CORVOL (220), a time-stamp record is placed in audit trail memory, if item 236 is enabled. Default = 99999999 221 DAILY CORVOL LIMIT The alarm limit value for daily contract volume. This alarm is automatic if the set value is reached by DAILY CORVOL (Item 223). Default = 99999999 222 DAILY CORVOL ALM During a wake cycle, if the computed value for Item 223 (DAILY CORVOL) is greater than the value at Item 221 (DAILY CORVOL LIMIT), an alarm is initiated. The upper display will read 11111111 for an active alarm, or 00000000 for no alarm. Default = 00000000 223 DAILY CORVOL Same as CORVOL (item 000) but is initialized to the value 00000000 at the START TIME (item 205) each day. If the instrument is accessed, this item will display the current value for that point in time. Default = 00000000 224 DAILY UNCVOL Same as UNCVOL (item 002) but is

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initialized to the value 00000000 at the START TIME (item 205) each day. If the instrument is accessed, this item will display the current value for that point in time. Default = 00000000 225 INCREMNTL CORVOL Same as CORVOL (item 000) but is initialized to the value 00000000 at the occurrence of every Time-triggered wakeup (item 202). If the instrument is accessed, this item will display the current value for that point in time. Default = 00000000 226 INCREMNTL UNCVOL Same as UNCVOL (item 002) but is initialized to the value 00000000 at the occurrence of every Time-triggered wakeup (item 202). If the instrument is accessed, this item will display the current value for that point in time. Default = 00000000 227 REP FORMAT OBSOLETE, DCU Protocol is not supported in Firmware 5.00 228 DAYS REPORTED OBSOLETE, DCU Protocol is not supported in Firmware 5.00 229 OPTN REP ITEM 1 The last six of ten, user selectable Audit Trail Report Items that can be placed in Audit Trail memory. The use of these six items is optional. If any of these six items are other than 255, the instrument is configured to store ten audit items. In this case, up to five 255s can be used to specify a blank (unused) position. To configure audit trail memory for only four items, place a 255 in all six item codes (229 - 234). If audit trail memory is configured for four items and then is to be returned back to the ten item arrangement, the instrument must be taken UNCONFIGURED, which will erase all audit trail data. Running SELF TEST after going unconfigured will return the audit trail back to its ten item configuration. These steps are necessary since RAM memory is re-mapped to change from one setting to another. 230 OPTN REP ITEM 2 See above. 231 OPTN REP ITEM 3 See above. 232 OPTN REP ITEM 4 See above. 233 OPTN REP ITEM 5 See above.

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234 OPTN REP ITEM 6 See above. 235 REPORT TRIGGER 1 Audit Trail Time Intervals Trigger Legend TIME Default Items: 229 - 048 (Battery Voltage) 230 - 000 (Corrected Volume) 231 - 002 (Uncorrected Volume) 232 - 008 (Gas Pressure) 233 - 026 (Gas Temperature) 234 - 059 (Battery Wake Cycles) 236 REPORT TRIGGER 2 Daily Nominated Volume Reached Trigger Legend VOLUME 237 REPORT TRIGGER 3 Alarm Activations Trigger Legend ALARM 238 REPORT TRIGGER 4 Serial Access Trigger Legend DCU 239 REPORT TRIGGER 5 Meter Reader (Mag Wand) Access Trigger Legend MAG READ 240 REPORT TRIGGER 6 Calibration Access (11111) Trigger Legend CALIB 241 REPORT TRIGGER 7 Configuration Access (22222) Trigger Legend CONFIG 242 REPORT TRIGGER 8 Change Made Via Keypad Trigger Legend CHANGE For items 235 thru 242, code (0 - 1) activates or deactivated a particular Report Trigger. If deactivated, that particular type of an event will not appear as a timestamped record in audit trail memory. Select: 0 - Inactive 1 - Activated Default 243 MO PK HR CORVOL The highest hourly CORVOL of the current ‘Gas’ month. Default = 00000000 244 MO PK HR DATE The date that the current month Peak Hour CORVOL (243) occurred. Format: Determined by item 262 Default = 00-00-00 245 MO PK HR TIME Ending hour for the current month Peak Hour CORVOL Date (244). Format: HH:MM:SS Default = 00 00 00 246 MO PK DAY CORVOL The highest Daily CORVOL (item 223) of the current ‘Gas’ month. Default = 00000000 247 MO PK DAY DATE The date that the current month Peak Day CORVOL (245) occurred. Format: Determined by item 262 Default = 00-00-00

ECAT

248 PREMO PK HR CRVL The highest hourly CORVOL of the previous ‘Gas’ month. Default = 00000000 249 PREMO PK HR DATE The date that the previous month Peak Hour CORVOL (248) occurred. Format: Determined by item 262 Default = 00-00-00 250 PREMO PK HR TIME Ending hour for the previous month Peak Hour CORVOL Date (249). Format: HH:MM:SS Default = 00 00 00 251 PREMO PKDAY CRVL The highest Daily CORVOL (item 223) of the previous ‘Gas’ month. Default = 00000000 252 PREMO PKDAY DATE The date that the previous month Peak Day CORVOL (251) occurred. Format: Determined by item 262 Default = 00-00-00 253 MAX DAY CORVOL The highest Daily CORVOL (item 223) since last reset. Default = 00000000 254 MAX DAY DATE The date that the MAX DAY CORVOL (253) occurred. Format: Determined by item 262 Default = 00-00-00 256 DAILY AVG P The daily average of Gas Pressure (item 008) which will be reset to zero at the start of each Gas Day. Default = 0.00 257 DAILY AVG TEMP The daily average Gas Temperature (026) which will be reset to zero at the start of each Gas Day. Default = 0.00 258 SLTBLE REP ITEM 1 The first four user selectable Audit Trail Report Items that can be placed in Audit Trail memory. To use these four items, place the itemcode number of the desire item at the desired report location (258 - 261). The value “255” at any of these Report Items will cause that position to be blank. The Audit Trail Report can be configured to save four or ten item values in audit trail memory. See Item Codes 229 - 234 further information. Default Items: 258 - 225 (Incremental Corrected Volume) 259 - 226 (Incremental Uncorrected Volume) 260 - 206 (Average Pressure) 261 - 207 (Average Temperature)

ECAT

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259 SLTBLE REP ITEM 2 Same as Item 258 260 SLTBLE REP ITEM 3 Same as Item 259 261 SLTBLE REP ITEM 4 Same as Item 260 262 DATE FORMAT Code (0 - 2) to select the format in which the Date is entered and displayed at item 204. The format for all date related items (213, 244, 247, etc.) will be governed by the selection of item 262. Select: 0 - MM:DD:YY Default 1 - DD:MM:YY 2 - YY:MM:DD 273 MAX FLOW RATE The highest value of Inst Flow Rate (209) since last manual reset.* Default = 0.00 274 MAX FLOW TIME The time when Max Flow Rate (273) occurred. Format: HH:MM:SS Default = 00 00 00 275 MAX FLOW DATE The date when Max Flow Rate (273) occurred. Format: Determined by item 262 Default = 00-00-00 276 MAX FLOW P The Gas Pressure (008) when Max Flow Rate (273) occurred. Default = 0.00 277 MAX HOUR CORVOL The highest value of Peak Hour Corvol (211) since last manual reset.* Default = 00000000 Note: The Date Format at item 199 is determined by the selection of the Event Log Lock (item 149). See item 149 for additional information. 278 MAX HR END TIME Ending hour when Max Hour Corvol (277) occurred. Format: HH:MM:SS Default = 00 00 00 279 MAX HOUR DATE The date for Max Hour End Time (278) Format: Determined by item 262 Default = 00-00-00 280 MAX HOUR P The Gas Pressure (008) when the Max Hour Corvol (277) occurred. Default = 0.00 281 MAX DIAL RATE The highest value of Inst Dial Rate (218) since the last manual reset.* Default = 0 282 MAX DIAL TIME The time when Max Dial Rate (281) occurred. Format: HH:MM:SS Default = 00 00 00 283 MAX DIAL DATE The date when Max Dial Rate (281) occurred. Format: Determined by item

ECAT

262 Default = 00-00-00 284 MAX DIAL P The Gas Pressure (008) when the Max Dial Rate (281) occurred. Default = 0.00 285 MAX PRESS The highest value of Gas Pressure (008) since the last manual reset.* Default = 0.00 286 MAX PRESS TIME The time when Max Press (285) occurred. Format: HH:MM:SS Default = 00 00 00 287 MAX PRESS DATE The date when Max Press (285) occurred. Format: Determined by item 262 Default = 00-00-00 288 MAX P FLOW RATE The Inst Flow Rate (209) when the Max Press (285) occurred. Default = 0.00 289 MIN PRESS The lowest value of Gas Pressure (008) since the last manual reset.* Default = 99999.99 290 MIN PRESS TIME The time when Min Press (289) occurred Format: HH:MM:SS Default = 00 00 00 291 MIN PRESS DATE The date when Min Press (289) occurred. Format: Determined by item 262 Default = 00-00-00 292 MIN FLOW RATE The Inst Flow Rate (209) when the Min Press (289) occurred. Default = 0.00 293 MAX GAS TEMP The highest value of Gas Temperature (026) since the last manual reset.* Default = -40.00 294 MAX TEMP TIME The time when the Max Gas Temp (293) occurred. Format: HH:MM:SS Default = 00 00 00 295 MAX TEMP DATE The date when the Max Gas Temp (293) occurred. Format: Determined by item 262 Default = 00-00-00 296 MAX T FLOW RATE The Inst Flow Rate (209) when the Max Gas Temp (293) occurred. Default = 0.00 297 MIN GAS TEMP The lowest value of Gas Temperature (026) since the last manual reset.* Default = 99999.99 298 MIN TEMP TIME The time when the Min Gas Temp (297) occurred. Format: HH:MM:SS Default = 00 00 00 299 MIN TEMP DATE The date when the Min Gas Temp (297)

ECAT

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occurred. Format: Determined by item 262 Default = 00-00-00 300 MIN T FLOW RATE The Inst Flow Rate (209) when the Min Gas Temp (297) occurred. Default = 0.00 301 P COMP COEFF 1 Default = 0.000000 302 P COMP COEFF 2 Default = 30.00000 303 P COMP COEFF 3 Default = 0.000000 304 P COMP COEFF 4 Default = 0.000000 305 P COMP COEFF 5 Default = 0.000000 306 P COMP COEFF 6 Default = 30.00000 307 P COMP COEFF 7 Default = 0.000000 These are Default 308 P COMP COEFF 8 Default = 0.000000 values only. 309 P COMP COEFF 9 Default = 0.000000 310 P COMP COEFF 10 Default = 30.00000 311 P COMP COEFF 11 Default = 0.000000 312 P COMP COEFF 12 Default = 0.000000 313 P COMP COEFF 13 Default = 0.000000 No ECAT should 314 P COMP COEFF 14 Default = 30.00000 be put into 315 P COMP COEFF 15 Default = 0.000000 316 P COMP COEFF 16 Default = 0.000000 service using 317 P COMP COEFF 17 Default = 0.000000 these coefficients. 318 P COMP COEFF 18 Default = 30.00000 319 P COMP COEFF 19 Default = 0.000000 320 P COMP COEFF 20 Default = 0.000000 321 P COMP COEFF 21 Default = 0.000000 322 P COMP COEFF 22 Default = 30.00000 323 P COMP COEFF 23 Default = 0.000000 See information 324 P COMP COEFF 24 Default = 0.000000 below for more 325 P COMP COEFF 25 Default = 0.000000 details. 326 P COMP COEFF 26 Default = 30.00000 327 P COMP COEFF 27 Default = 0.000000 328 P COMP COEFF 28 Default = 0.000000 329 P COMP COEFF 29 Default = 0.000000 330 P COMP COEFF 30 Default = 30.00000 331 P COMP COEFF 31 Default = 0.000000 332 P COMP COEFF 32 Default = 0.000000 Item codes 301 thru 332 are the 32 pressure transducer compensation coefficients. These values determine the pressure response over the entire operating temperature range and are unique for each pressure transducer, regardless of the pressure range. The coefficient values are determined by Mercury Instruments at the factory, or may be derived during the Conversion process when converting an ECAT from firmware 3.10 to 4.00, 4.01or 4.02. Item codes greater than 300 are not accessible through the instruments keypad, nor are they viewable on the LCDs. The only method to view (or change) the coefficient values is through the use of AT-Link software, (see AT-Link User Guide for more information).

ECAT