manual: 3081-t two-wire conductivity transmitter

Models 3081 T and 81 T

®

®

Instruction ManualPN 51-3081/81T/rev.CApril 2003

ESSENTIAL INSTRUCTIONSREAD THIS PAGE BEFORE PROCEEDING!

Rosemount Analytical designs, manufactures, and tests its products to meet many national andinternational standards. Because these instruments are sophisticated technical products, you mustproperly install, use, and maintain them to ensure they continue to operate within their normalspecifications. The following instructions must be adhered to and integrated into your safety programwhen installing, using, and maintaining Rosemount Analytical products. Failure to follow the properinstructions may cause any one of the following situations to occur: Loss of life; personal injury;property damage; damage to this instrument; and warranty invalidation.

• Read all instructions prior to installing, operating, and servicing the product. If this Instruction Manualis not the correct manual, telephone 1-800-654-7768 and the requested manual will be provided.Save this Instruction Manual for future reference.

• If you do not understand any of the instructions, contact your Rosemount representative forclarification.

• Follow all warnings, cautions, and instructions marked on and supplied with the product.

• Inform and educate your personnel in the proper installation, operation, and maintenance of theproduct.

• Install your equipment as specified in the Installation Instructions of the appropriate InstructionManual and per applicable local and national codes. Connect all products to the proper electrical andpressure sources.

• To ensure proper performance, use qualified personnel to install, operate, update, program, andmaintain the product.

• When replacement parts are required, ensure that qualified people use replacement parts specifiedby Rosemount. Unauthorized parts and procedures can affect the product’s performance and placethe safe operation of your process at risk. Look alike substitutions may result in fire, electricalhazards, or improper operation.

• Ensure that all equipment doors are closed and protective covers are in place, except whenmaintenance is being performed by qualified persons, to prevent electrical shock and personal injury.

CAUTIONIf a Model 275 Universal Hart® Communicator is usedwith these transmitters, the software within the Model275 may require modification.

If a software modification is required, please contactyour local Fisher-Rosemount Service Group orNational Response Center at 1-800-654-7768.

Emerson Process Management

Rosemount Analytical Inc.2400 Barranca ParkwayIrvine, CA 92606 USATel: (949) 757-8500Fax: (949) 474-7250

http://www.RAuniloc.com

© Rosemount Analytical Inc. 2001

TABLE OF CONTENTSSection Title Page

1.0 INSTALLATION ................................................................................................................ 1-11.1 Overview .................................................................................................................. 1-11.2 Pre-Installation Set-Up............................................................................................. 1-21.3 Mechanical Installation (3081T) ............................................................................... 1-31.4 Mechanical Installation (81T) ................................................................................... 1-31.5 Electrical Installation ................................................................................................ 1-81.6 Installation Verification ............................................................................................. 1-81.7 Hazardous Locations ............................................................................................... 1-8

2.0 OPERATION OVERVIEW ................................................................................................. 2-12.1 General .................................................................................................................... 2-12.2 Displays ................................................................................................................... 2-12.3 Infrared Remote Control (IRC)................................................................................. 2-22.4 Diagnostic Messages............................................................................................... 2-22.5 Menu Program Tree................................................................................................. 2-3

3.0 FACTORY PROGRAMMED SETTINGS........................................................................... 3-13.1 General .................................................................................................................... 3-1

4.0 TRANSMITTER PROGRAM SET-UP ............................................................................... 4-14.1 Program Menu ......................................................................................................... 4-14.2 Output Programming................................................................................................ 4-24.3 Temperature Parameters......................................................................................... 4-34.4 Display Units/Security .............................................................................................. 4-4

5.0 START-UP AND CALIBRATION ...................................................................................... 5-15.1 Accessing The Calibrate Menu ................................................................................ 5-15.2 Calibrate Menu (Toroidal) ........................................................................................ 5-25.3 Calibrate Menu (% Concentration)........................................................................... 5-35.4 On-line Calibration ................................................................................................... 5-4

6.0 DIAGNOSIS AND TROUBLESHOOTING ........................................................................ 6-16.1 Overview .................................................................................................................. 6-16.2 Fault Conditions ....................................................................................................... 6-36.3 Diagnostic Messages............................................................................................... 6-46.4 Quick Troubleshooting Guide .................................................................................. 6-56.5 Systematic Troubleshooting..................................................................................... 6-66.6 RTD Resistance Values........................................................................................... 6-7

7.0 MAINTENANCE ................................................................................................................ 7-17.1 Overview .................................................................................................................. 7-17.2 Preventative Maintenance ....................................................................................... 7-17.3 Corrective Maintenance ........................................................................................... 7-1

8.0 PRODUCT SPECIFICATIONS.......................................................................................... 8-1

9.0 REMOTE COMMUNICATIONS......................................................................................... 9-19-1 Hart Communication ................................................................................................ 9-19-2 AMS Communication ............................................................................................... 9-1

i

MODELS 3081T/81T TABLE OF CONTENTS

MODEL 3081T / 81TMICROPROCESSOR TRANSMITTERS

ii

LIST OF FIGURES

Figure No. Title Page1-1 Component Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1-2 CPU PCB Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-3 Dimensional Information - Model 3081T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-4 Mounting Information - Model 3081T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1-5 Exploded View of Mounting Dimensions - Model 81T . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1-6 Exploded View of Mounting - Model 81T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1-7 Function Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1-8 Model 3081/81T Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1-9 Model 3081/81T Sensor J-Box Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

1-10 Model 3081/81T Terminal Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1-11 Intrinsically Safe BASEEFA Model 3081T Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

1-12 Intrinsically Safe BASEEFA Model 81T Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

1-13 FMRC Intrinsically Safe Installation for Model 3081T . . . . . . . . . . . . . . . . . . . . . . . 1-14

1-14 FMRC Intrinsically Safe Installation for Model 81T . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

1-15 CSA Intrinsically Safe Installation for Model 3081T . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

1-16 CSA Intrinsically Safe Installation for Model 81T . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

1-17 FM Explosion-Proof Installation for Model 3081T . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

2-1 Process Display Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-2 Program Mode Display Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-3 Infrared Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-4 Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

4-1 Program Menu and Menu Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4-2 RTD Sensor Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4-3 Security Code Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

5-1 Calibration Menu Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5-2 Calibration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

6-1 Diagnose Menu Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6-2 Diagnose Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6-3 Disabling Fault Annunciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6-4 Warning Annunciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6-5 Troubleshooting Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

7-1 Hold Annunciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7-2 Exploded View - 3081T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7-3 Exploded View - 81T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

8-1 Transmitter Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8-2 Infrared Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

8-3 HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

9-1 HART Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9-2 HART Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

9-3 AMS Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

MODELS 3081T/81T TABLE OF CONTENTS

iii

LIST OF TABLESTable No. Title Page

1-1 Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1-2 Hardware/Software Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

3-1 Program Variables with Factory Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

4-1 Program Menu Mnemonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

5-1 Nominal Cell Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5-2 Calibrate Menu Mnemonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

6-1 Diagnostics Variables Mnemonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6-2 Diagnostic Fault Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6-3 Quick Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

6-4 RTD Resistance Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6-5 Conductivity Determination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

7-1 3081 T Replacement Parts and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7-2 81 T Replacement Parts and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

8-1 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

LIST OF APPENDICESAppendix Title Page

A Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

MODELS 3081T/81T APPENDIX

MODELS 3081T/81T SECTION 1.0INSTALLATION

SECTION 1.0 INSTALLATION

FIGURE 1-1. Component Assembly

1.1 OVERVIEW This inductive conductivity transmitter has beendesigned for easy installation and shipment. The pur-pose of this section is to provide information on the elec-trical configurations and the physical mountingsavailable. Prior to discarding the packing case:

If it is damaged, the transmitter may have also sus-tained damage. Contact the carrier at once.

Remove all items shown on the packing list and note any exceptions.

Model 3081T Model 81T

DWG. NO. REV.

4008114 C

DWG. NO. REV.

40308113 E

1-1

The Model 3081T and 81T conductivity transmitters aredesigned to make accurate measurements while thesensor is submersed in the process stream.

Measurements can also be tailored to high temperatureand/or high pressure streams. The specific ranges cov-ered are controlled by both hardware and software.

1-2

1.2 PRE-INSTALLATION SET-UP

1.2.1 Accessing the Stack (Model 3081T). The Model3081 T electronics are contained on three boards(PCB’s), as shown in Figure 1-1. The Analog board is onthe bottom, the Central Processing Unit (CPU) board isin the middle and the Display board is on top. To set theelectronic options, this stack may need to be disassem-bled. There are few reasons to change the default set-tings shown in Table 1-1. If they are acceptable, thestack does not need to be disassembled. However, if thesettings need to be changed to fit the application, followthe steps below to disassemble the stack.

Disassemble Steps:

1. Back out the bolt (located on the side of the trans-mitter) holding the cover lock in place. Disengage itfrom the ridged circuit end cap (contains view of dis-play). Remove the threaded circuit end cap that con-tains the LCD display window.

2. Remove three screws holding the stack in place.Remove the Display board gently, it is connected tothe CPU board via a ribbon cable.

The CPU board has two jumpers (JP1 and JP3) asshown in Figure 1-2. The Write Enable (WRT) is factoryjumpered IN (jumper is across both pins) to allow theinstrument to be calibrated. JP3 is factory set with thejumper in the 50Hz position (jumper is across one pinonly) and need not be reset.

3. Change the settings (jumpers) to fit the application.4. Ensure the cable connections between the display

board and the CPU board are fully seated and repo-sition the display board.

The Model 3081 display can be rotated in 90° incrementsto three positions to optimize installation convenience.This will enable the user to see the display right-side-up,regardless of mounting position. The transmitter shouldnot be installed with the conduit openings on the top. Theblack plastic infrared sensor (small square window) onthe plastic bezel is the top of the display.

Display positioning:

5. Position the display board on the stand offs with theblack plastic infrared sensor in the optimum position.

6. Replace the three screws holding the stack to thecase. Do not overtighten; this may crack the displayglass.

7. Replace threaded circuit end cap.

8. Secure the cover lock tab within the ridged surfaceon the side of the circuit end cap.

9. Tighten the bolt to secure the circuit end cap.

Once the transmitter is installed and operational, the set-tings can be protected by disassembling the stack andremoving JP1 on the CPU board. When JP1 is set toOUT (jumper is contacting only one pin), no parametersettings can be saved.

1.2.2 Accessing the PCB Stack (Model 81T). Thestack is similar to that in the Model 3081T. The display-board is furthest in, and the CPU board is in the middle(see Figure 1-1).

Disassemble Steps:

1. Remove the four front cover screws and open thefront cover of the Model 81 T.

2. Locate the RFI/EMI metal shield.3. Disengage the three screws attaching the shield

and remove it.4. Set the jumpers as required for the installation.

These are the same as presented in Table 1-1.5. To reassemble, reverse the above procedure.


FIGURE 1-2. CPU PCB – Model 3081/81 Jumper Locations

DWG. NO. REV.

43081C24 B

1-3


1.3 MECHANICAL INSTALLATION (3081T)The Model 3081 T Transmitter is suitable for installation inharsh environments.

• For best operation, locate in an area where tempera-ture extremes, vibrations, electromagnetic, and radiofrequency interferences are minimized or absent.

The transmitter is equipped with two 3/4 in. FNPT conduitopenings, one on each side of the transmitter housing.

• Remove the terminal end cap.

• With the transmitter positioned with the wiring terminalside of the enclosure opened (as seen in Figure 1-3),use the left conduit opening to bring in the sensorwiring, and the right side conduit opening for powersupply/current loop wiring.

• To prevent moisture from entering the transmitterhousing, use weathertight cable glands supplied byothers.

NOTEMoisture accumulation in the transmitterhousing can affect transmitter performanceand may void its warranty.

• If conduit is used, connections on the transmitter hous-ing should be plugged and sealed (with tape, pipe com-pound, or sealant) to prevent moisture accumulation inthe terminal side of the housing.

• The transmitter must be installed so that the conduitopenings are not on the top, because moisture canaccumulate in that position.

• The installation site should permit the use of standardsensor cable lengths: for longer distances ( > 33 feet), ajunction box is required.

• The transmitter should be easily accessed by operatingand maintenance personnel.

1.3.1 Flat Surface Mounting. The transmitter may bemounted on a flat surface (see Figure 1-3) using the thread-ed mounting holes on the bottom of the transmitter.

1.3.2 Pipe Mounting Bracket. An optional pipe mountingbracket is available. See Figure 1-4 for mounting informa-tion.

1.4 MECHANICAL INSTALLATION (81T)Although the Model 81 T Transmitter is suitable for outdooruse, it should be located in an area where temperatureextremes and vibrations are minimum or absent. Select aninstallation site that is at least one foot from any high voltageconduit, has easy access for operating personnel, and is notin direct sunlight.

1.4.1 Panel Mounting. The transmitter is designed to fit intoa DIN standard 137.9 x 137.9 mm (5.43 x 5.43 in.) panelcutout.

1. Remove the cap plugs from the rear of the transmitter.

2. Install the transmitter as shown in Figure 1-5 and 1-6. Insertthe transmitter enclosure through the front of the panelcutout and align the panel mounting brackets as shown.

3. Insert two mounting bracket screws through each ofthe two mounting brackets and into the tapped holes inthe rear of the transmitter enclosure and tighten.

1.4.2 Wall or Surface Mounting


2. Mount the transmitter to the wall mounting bracketusing the four screws provided (see Figure 1-6).

3. Attach the mounting bracket to the wall using customersupplied hardware.

1.4.3 Pipe Mounting


2. Attach the mounting bracket to the rear of the transmit-ter and tighten the four screws (see Figure 1-5).

3. Place supplied U bolts around the mounting pipe andthrough the pipe mounting bracket. Tighten the U boltnuts until the transmitter is securely mounted to thepipe.

Jumper Jumper Position

ANALOG PCB

JP1 IN Earth Ground

DIGITAL PCB

JP1 IN Write Enable

JP3 IN 50Hz

TABLE 1-1. Jumper Settings

FIGURE 1-3. Dimensional Information – Model 3081 T

DWG. NO. REV.

43081C01 C


1-4

MILLIMETERINCH

1-5


Figure 1-4. Mounting Information - Model 3081 T

DWG. NO. REV.

40308103 B

DWG. NO. REV.

40308104 G

MILLIMETERINCH

1-6


FIGURE 1-5. Mounting Dimensions – Model 81 T

DWG. NO. REV.

40008102 B

MILLIMETERINCH

Horizontal pipe shown. To vertical pipe, rotate bracket and U-bolts 90°.

1

1-7


Figure 1-6. Mounting Exploded Views - Model 81 T

DWG. NO. REV.

40008104/5 B

PANEL MOUNTING

(POWER IN)

1-8


1.5 ELECTRICAL INSTALLATION1.5.1 Conductivity SensorsRosemount Analytical Inc.’s inductive conductivity sensorsare compatible with the Model 3081T/ 81T transmitters.Please refer to Figures 1-7 thru 1-9 for appropriate sensorto transmitter wiring. The sensor cable should be routedthrough the conduit opening closest to the Pin 2 connec-tion.

NOTEThe sensor wiring must be compatible with soft-ware settings (see Table 1-2 and Section 4.0).

1.5.2 Power Supply/Current Loop Wiring.The Model 3081T/81T operates within a range of 12-42.4VDC power. The power supply must be capable of provid-ing for a surge current during the first 80ms of start up (Thisis 40mA with a 250Ω series resistor and 24 VDC powersupply. For other series’ resistor and voltage combinations,this 80-millisecond power surge can not exceed 70 mA).The power supply/current loop wiring routes through theconduit opening closest to pin number 16 (for Model3081T) or TB-2 (for Model 81T). Connect as illustrated inFigure 1-10. For shielded power supply/current loop cable,the shield should be connected to the earth ground con-nection as illustrated in Figures 1-7 through 1-10).1.5.3 High/Low Range Sensor Wiring.The Model 3081T sensor connection requires connectingthe white toroid wire (see Figure 1-7) to either TB-1 pin 11(indicated on the inside of the terminal end cap) for highrange, and TB-1 pin 12 for low range (see Figure 1-7). Toaccess the terminal block, unscrew the terminal end cap.The Model 81 sensor connection requires connecting thewhite toroid wire (see Figure 1-7) to either TB-1 pin 11 forhigh range, and TB-1 pin 12 for low range. Autorange “on” allows the instrument range to operate from0 to 2,000,000 µS/cm. Autorange “off” limits the range to 4ranges (0, 1, 2, and 3). Refer to Table 1-2 and ProgramSet-up in Section 4.4 for manual or auto range features thatthis application requires. Using the selected rangesimproves the loop accuracy specification of the transmitterand sensor.

1.6 INSTALLATION VERIFICATION 1.6.1 Overview. Verification of installation includes ensur-ing that the proper precautions have been observed dur-ing the installation process and recognizing whether theinstrument is operating properly upon power up.1.6.2 Precautionary Checklist. Before applying powerverify the following:1. Sensor wiring and power supply/loop wiring are not in

the same conduit.2. Sensor or power supply/loop wiring are at least 12

inches from any high current lines.3. Sensor chosen is compatible with the 3081T/81T

Transmitter.4. Terminal end cap has been replaced.1.6.3 Power Up. Activate power supply. Upon poweringup, with the sensor in solution, the transmitter:1. Should display a live conductivity reading in large, dark

numerals on a gray background.2. Should display the present temperature and current

output in smaller numerals on the lower line of the dis-play screen.

3. Should NOT have the word FAULT or HOLD appearingon the left edge of the display. The display should notbe flashing. If any of these conditions exist, refer toSection 6.0 for explanation of conditions, and possiblesolutions.

1.7 HAZARDOUS LOCATIONS 1.7.1 Intrinsically Safe Installation.For BASEEFA I.S. installation for Model 3081T, see Figure 1-11. For BASEEFA I.S. installation for Model 81T, see Figure 1-12. For FMRC I.S. installation for Model 3081T, see Figure 1-13. For FMRC I.S. installation for Model 81T, see Figure 1-14. For CSA I.S. installation for Model 3081T, see Figure 1-15. For CSA I.S. installation for Model 81T, see Figure 1-16.

1.7.2 Explosion-Proof installation (Model 3081T only).See Figure 1-17 for Model 3081T explosion-proof installa-tion wiring.

TABLE 1-2. Hardware/Software Compatibility (Measurement Range [µS/cm]*)

MANUAL RANGE 0 1 2 3

(20 mA setpoint)Low Range 80-800 800-8,000 8,000-80,000 80,000-400,000

(accuracy: ± 1.0%)

High Range 1,100-11,000 11,000-110,000 110,000-1,200,000 N/A

(accuracy: ± 1.0%)Wir

e T

erm

inal

11

or

12

*NOTE: Values shown are for uncompensated conductivity using a cell constant of 1.0. The conductivity values auto rangesfrom 0 to 2,000,000 µS/cm with an accuracy of 5 to 10% ±150 µS/cm depending on the process conditions,installation, and the sensor used. For greater accuracy and repeatability, manual range selection is recommended.

1-9


FIGURE 1-7. Wiring Schematic Showing Signal Function On Each Connection

DWG. NO. REV.

43081T01 A

MILLIMETERINCH

FOR BEST EMI/RFI PROTECTION, A METAL CABLE GLANDFITTING MAY BE USED TO CONNECT THE BRAID TO THEINSTRUMENT CASE.

FOR CUSTOMER SUPPLIED CABLE OR FORUNPREPPED ROSEMOUNT CABLE, SPECIFYPN 9200275 (BELOW 120 °C) (SPECIFY LENGTH)

TB1

1211

1-10


FIGURE 1-8. Model 3081/81T Sensor Wiring Schematic by Sensor Model

DWG. NO. REV.

43081T03 A

MILLIMETERINCH

1211

1211

1-11

FIGURE 1-9. Model 3081/81T Sensor Wiring with J-Box


DWG. NO. REV.

43081T04 A

MILLIMETERINCH

1112

1-12


FIGURE 1-10. MODEL 3081/81T TERMINAL BLOCKS

1-13


FIGURE 1-11. Intrinsically Safe BASEEFA Model 3081T Label

FIGURE 1-12. Intrinsically Safe BASEEFA Model 81T Label


1-14

FIGURE 1-13. FMRC Intrinsically Safe Installation for Model 3081T (1 of 2)



1-15


1-16




1-17


1-18

FIGURE 1-15. CSA Intrinsically Safe Installation for Model 3081T (1 of 2)



1-19


1-20




1-21


FIGURE 1-17. FM Explosion Proof Installation for Model 3081T

1-22

2-1

2.1 GENERALThe Model 3081 T and Model 81 T transmitters operatein either the Process or Program modes. The processmode screen is illustrated in Figure 2-1 and the programmode screen is illustrated in Figure 2-2.

2.2 DISPLAY 2.2.1 Process Mode (normal operating mode). Whenoperating in this mode:

• The primary process variable (the conductivity or %concentration measured value) is continuously dis-played (see 1 in Figure 2-1)

• Engineering units are determined by the processdisplay mode

• Current output is in mA or percent output (see 2 inFigure 2-1)

• Temperature output is in °F or °C (see 3 in Figure 2-1)

2.2.2 Program Mode (programming or calibratingmode — step-by-step instructions for programmingand calibrating the transmitter are given in Sections4.0 and 5.0, respectively). When operating in this modethe following information is provided on the instrumentdisplay:

• Continuous display of the primary process variableis still available.

• Menus are displayed below the process variable.The active subset title is in bold print (see 1 inFigure 2-2).

CALIBRATE PROGRAM DIAGNOSE

C A L I b r A t E

E X I T N E X T E N T E R

1000mS/cm

FAULT

HOLD

♥6

5

1

3

4

MODELS 3081T/81T SECTION 2.0 OPERATION OVERVIEW

SECTION 2.0OPERATION OVERVIEW

2

FIGURE 2-1. Process Display Screen

1000mS/cm

25.0C 12.00 mA

FIGURE 2-2. Program Mode Display Areas

• Security ID (see Section 4.4, step 10) and promptsare displayed below the segments (see 2 and 3 inFigure 2-2).

• The HART symbol (see 4 in Figure 2-2) flashes dur-ing HART communications.

• FAULT is displayed (see 5 in Figure 2-2) when atransmitter disabling condition occurs. The currentdisplay will flash. The current/temperature outputarea alternates between the regular reading and thedescriptive fault message when in the programmode. When in the fault mode, the fault indicatorlights up and the process variable flashes. The pro-gram mode must be entered to see the descriptivefault message.

• HOLD (see 6 in Figure 2-2) becomes visible when-ever the transmitter is placed in the hold, test, ormultidrop function. When this indicator is visible, thecurrent output is held at the value entered. Hold ismost often used when servicing/cleaning the sen-sor.2

31

2-2

2.3 INFRARED REMOTE CONTROL (IRC)The IRC is the most convenient way to calibrate, pro-gram, or access the diagnostics in the transmitter. Itoperates the same as other remote controllers.

For best operation, the IRC should be within ten feet ofthe transmitter and aimed directly at the infrared sensorwindow (small square window at top of display) at anangle of no more than fifteen degrees. The amount ofambient light may also affect IRC communication.

2.3.1. The overall menu structure is shown in Figure 2-4.The top level functions available to the IRC (CAL,PROG, and DIAG) are shown on the display with theactive menu segment highlighted as described inSection 2.2.

2.3.2. Menu Keys. The three primary menu structuresare Calibrate (CAL), Program (PROG), and Diagnose(DIAG). They are shown horizontally on the screen andhave separate keys on the IRC (see 1, 2, and 3 in Figure2-3). Pressing the labeled key will provide access to thatmenu.

2.3.3. Program Command Keys. The three programcommand keys are labeled ENTER, NEXT, and EXIT(see 4, 5, and 6 in Figure 2-3). These keys are used asfollows:

ENTER: This advances down through the sub-menus to the prompts, will save the new value, and activate NEXT.

NEXT: This advances the program to the next sub-menu.

EXIT: This key is used to abort the current sub- menu operation and return to the previous menu segment.

2.3.4. Editing Keys. These keys are used to edit inputvariables (see Figure 2-3). The left/right arrows changethe location of the prompt and causes the integer toflash. These also allow access to the measurement unitand decimal place location. When a flashing mnemonicappears on the display, the UP and DOWN arrow keysscroll up or down through the list. When numbers areshown, the UP and DOWN keys change the value ofthe digit.

2.3.5. Special Entry Keys. These keys provide systemlevel operations.

MODELS 3081T/81T SECTION 2.0OPERATION OVERVIEW

98

6

5

43

2

1

Editingkeys

FIGURE 2-3. Infrared Remote Control

RESET: Aborts the current operation and returns to the process display screen (see 8 in Figure 2-3).

HOLD: Accesses prompt to toggle between enable and disabling of this function (see 9 in Figure 2-3). When enabled the current output value is shown.

2.4 DIAGNOSTIC MESSAGESWhenever a warning or fault has been triggered, diag-nostic messages are displayed to aid in problem solv-ing. These messages (for an example, see Figures 6-3and 6-4) flash alternately with the temperature/outputreadings.

If more than one message has been generated, thewarning or fault messages will alternate with the regularreadings.

See Section 6.0 Diagnosis and Troubleshooting formessage meaning and possible causes.

2-3

MODELS 3081T/81T SECTION 2.0OPERATION OVERVIEW

CALIBRATION

t t t t

25.0C 12.00mA

Model 3081T / 81TProcess Display

ScreenmS/cm

t t t

t t

PROGRAM

Process Display

FIGURE 2-4. Menu Tree

DIAGNOSTICS

2.5 MENU PROGRAM TREE The software has been designed with the user in mind. It uses a simple three layer setup to calibrate and program (configure)the instrument and display instrument diagnostic conditions (see Figure 2-4 below).

3-1

MODELS 3081T/81T SECTION 3.0FACTORY PROGRAMMED SETTINGS

SECTION 3.0FACTORY PROGRAMMED SETTINGS

4. It provides space to input specific values.If the factory programmed settings in Table 3-1 meetyour application needs, then the write enable jumper(JP1) may be removed (see Figure 1-2 and Table 1-1). If ranges or other settings (ID code, auto range, tem-perature, etc.) need to be changed, then proceed toSection 4.0 and 5.0, and remove JP1 when finished.Any error messages encountered are discussed inSection 6.0.

3.1 GENERALThe Models 3081 T and 81 T transmitters have beenshipped with factory programmed settings.

This table is useful in several ways:

1. It gives an overview of variables that can be changed,the mnemonics, and the factory settings.

2. It identifies more detailed sections for each menu.

3. It shows the factory settings.

VARIABLE NAME MNEMONIC FACTORY SETTINGS CUSTOMER SETTINGS

Output (Section 4.2) – –

4 mA 0 µS

20 mA 1000 mS

Hold 21 mA

Fault 22mA

Dampening 0 samples/second

Test 12 mA

Temperature (Section 4.3)

Auto temperature compensation on

Manual temperature 25.0° C (overridden by auto)

Temperature sensor type 100-3

Display (Section 4.4)

Measurement type t

Range ! Hi

Auto range " on

Manual range #" 0, 1, 2, 3 (selectable only with

Autorng “off”) or see Table 4-1

Temperature C

Output Cur

Code 000

Table 3-1. Program Variables with Factory Settings*

Table 3-1 continues on page 3-2.

*Press ENTER after each command to get entry field.

3-2

MODELS 3081T/81T SECTION 3.0START-UP AND CALIBRATION

Table 3-1 (continued) Calibrate Menu (Section 5.0)/Diagnose Menu (Section 6.0)

VARIABLE NAME MNEMONIC FACTORY SETTINGS CUSTOMER SETTINGS

Calibrate (Section 5.0)

Cell constant $ (sensor specific)

Sensor 0 %$ 0

Temperature setting &%'() 025.0

Temperature slope (Two Point temperature) %'($(% t1 =

t2 =

Temperature slope (if already known) # ) $ (% 2.000

Diagnose (Section 6.1)

(Each segment displays the current value in the transmitter.)

Absolute conductivity $ 1000 µS

Cell constant % 1.00

Temperature slope $ (% 2.000

Software version *+ (example)

Show fault warnings , ) (enter) none

NOTE: Software version is on the serial tag and should match what is in the diagnose segment.

4-1

4.1 PROGRAM MENUThe program menu allows configuration of the transmit-ter outputs, temperature and values for the displayshown on the LCD. This unit has been preprogrammedto operate in the toroidal mode.

Changes to the operating parameters are made throughthe Program menu.

Press the Program menu key, while pointing the InfraredRemote Control (IRC) at the transmitter to initiate com-munication. To avoid communicating with more than onetransmitter at a time, each one must have a unique 3digit code. Entering the “Id” CODE (see Section 4.4,step 10) of a transmitter wil l permit access to

MODELS 3081T/81T SECTION 4.0TRANSMITTER PROGRAM SET-UP

SECTION 4.0PROGRAM SET-UP

Calibrate MenuSegments/Commands

Program MenuSegments/Commands

DIAGNOSE MENUSegments/Commands

CURRENT OPERATING MENU

tEXIT NEXT ENTER

EXIT NEXT ENTER

EXIT NEXT ENTER

FIGURE 4-1. Program Menu and Menu Segments

EXIT NEXT ENTER

tEXIT NEXT ENTER

tEXIT NEXT ENTER

tEXITNEXT

ENTER

-EXIT NEXT ENTER

KEYPRESS COMMANDS

Calibrate Program DiagnoseId 000

Exit Enter

Menu Segment/Prompt Area

programming menus of only that transmitter. For thesequence to enter this code, press the PROG key andgo to the last (display) element of the sub-menu.

The sub-menus are shown in the message display area.These define which prompts are shown (See Figure 2-2). The prompts have fields that are used to edit theparameters of the menu currently active. Editing isaccomplished by scrolling through a predetermined listof responses. See Figure 4-1 for the sub-menus avail-able under the program menu.

See Table 4-1 for Program Menu sequence/ commandsand mnemonics.

EXIT NEXT ENTER

tEXIT NEXT ENTER

tEXIT NEXT ENTER

EXIT NEXT ENTER

tMEXIT NEXT ENTER

tMEXIT NEXT ENTER

W tEXIT NEXT ENTER

4-2


4.2 OUTPUT PROGRAMMING

1. Press PROG key on IRC. If security has been enabled, theTemperature/Output line is replaced with a prompt asking for the“Id”. Use the IRC editing keys (arrow keys) to scroll throughnumerals until the correct code shows. Press ENTER. If correct“Id” was entered, OUtPUt is displayed. Press ENTER.

2. The 4 MA prompt sets the low end of the current output range tomatch the low end of the range measurement. Use the IRC edit-ing keys to change flashing digit and to shift to next digit. PressENTER.

3. The 20MA prompt sets the high end of the current output rangeto match the high end of the range measurement. Use the IRCediting keys to set desired value. Press ENTER.

4. The Hold prompt determines the current output (between 03.80and 22.00 mA) when HOLD is activated. An entry of 00.00causes the transmitter to hold the output at the current outputlevel. This value overrides the FAULT setting. Factory set defaultentry is 21.00 mA. Use the IRC editing keys to set desired value.Press ENTER.

5. The FAuLt prompt determines the transmitter’s current outputlevel (between 03.90 to 22.00mA) when a FAULT conditionexists (and unit is not in the MULTIDROP, HOLD or TESTmodes). An entry of 00.00 causes the transmitter to hold at thecurrent output level. The factory default is 22.00 mA. Use theIRC editing keys to set desired value. Press ENTER.

6. The dPn (dampening) prompt sets the time constant used in thecurrent output. It can be increased up to 255 seconds to reduce theeffect of spikes on the output current. Factory set default value is000 seconds (No dampening). Use the IRC editing keys to setdesired value. Press ENTER.

7. The tESt prompt sets the test current output value. The factorysetting is 12.00. Use the IRC editing keys to set desired value.Press ENTER.

When Enter is pressed:The TEST Value entered is imposed on the current output loop.• TEST current output value supersedes the HOLD value(if HOLD has been activated).• TEST current output value supersedes the FAULT value(if a FAULT condition exists).

The HOLD display becomes visible (ON).Press RESET to return to normal operation.

Program

Exit Enter

To temp menusegment

Return toMain

Screen

“./0” / EXIT ENTER

M “. /” EXIT ENTER

M “./”./ 0 EXIT ENTER

t .“. 0”/ EXIT ENTER

. “. ”/ EXIT ENTER

t “./”0 EXIT ENTER

ttEXIT NEXT ENTER

“. /” EXIT NEXT ENTER

The following procedures are used to set the 4 to 20 mA current output range, the Hold output value, Fault output value anddampening value. The factory settings are shown for each segment. To access the output submenu, do the following:

4-3


4.3 TEMPERATURE PARAMETERS

1. Press the Program key (PROG) on the IRC, enter the security code ifnecessary, and press NEXT.

While tEMP is displayed, press ENTER to get the first prompt of thetEMP menu segment.

2. The tAUtO prompt is used to enable (ON) or disable (OFF) auto tem-perature compensation for all conductivity process measurements. IfOn is selected, an equation is used to temperature compensate all pro-cess measurements to 25 °C and will be the reported temperature onthe process display. The default value is On. Press ENTER.

3. The tMAn prompt is used to enter a temperature value that the com-pensation equation will use (overrides auto). The actual process tem-perature, however, will be shown on the main screen. The temperaturedisplay mode determines the units used. Absolute conductivity is mea-sured using the default value of 025.0 °C. Use the IRC editing keys tochange the value only if some determination other than absolute con-ductivity is required. Press ENTER.

4. The tC prompt matches the instrument to the type of temperature sen-sor being used. Listed type available is 100-3 (3-wire Pt100 RTD). TheIRC editing keys scroll through the listing. The default value is 100-3.Press ENTER.

NOTE4-wire Pt100 is displayed but is not available intoroidal sensors.

5. Press EXIT to return to normal operation or NEXT to go to the displaysubmenu.

tMEXIT NEXT ENTER

Returnto MainScreen

To displaymenu segment.

RTD 3 Wire RTD - Connected to an instrument designed to accept three wireinput. Compensation is achieved for lead resistance (cable wire resistanceis affected by cable length and temperature change). This is the most com-monly used configuration.

+

-

The following procedures are used to select between automatic temperature compensation, absolute conductivity, manu-al temperature compensation, and RTD sensor type. To access the temperature parameters, do the following:

tEXIT NEXT ENTER

t tEXIT ENTER

Menu seg.

t 1-EXIT ENTER

tM 20 EXIT ENTER

To SegmentMenu

Sense

FIGURE 4-2. RTD Sensor Connections


4.4 DISPLAY UNITSThe following procedures are used to select the display menus, calculation formulas, process variable and temperaturedisplay units. The factory settings are shown with each variable. To access the display submenu, do the following:

tEXIT NEXT ENTER

EXIT NEXT ENTER

tt “.”/EXIT ENTER

“ /”EXIT ENTER

tEXIT NEXT ENTER

t“/”EXIT ENTER

tM “/”/EXIT ENTER

#" “/”/EXIT ENTER

" “/”/EXIT ENTER

"“/”EXIT ENTER

1. Press PROG key on remote control.

2. Enter ID Code number (if necessary). See step 10.

Press NEXT twice to scroll through the tEMP menusegment to the dISPLAY menu segment.

3. When the dISPLAY menu is displayed, press ENTERto access the first prompt in the display sequence.

4. The tYPE prompt determines which conductivitymeasurement with measurement units is to be dis-played: "t" = toroidal, “HSH” (95-99% Sulfuric Acid),“HSO” (0-25% Sulfur ic Acid),“HCl” (0-15%Hydrochloric Acid), and “NOH” (0-12% SodiumHyroxide). The IRC editing keys are used to scrollthrough the list. Other mnemonics will appear, buthave been deactivated. Choose the desired one andpress ENTER.

5. The rAnGE prompt is used to determine the mea-surement range limit (High or Low). The IRC editingkeys are used to scroll between these. The default isHI. The selection must agree with the terminal con-nection at pin 11 or 12 (refer to Figures 1-7 through1-9). Choose between these and press ENTER.

NOTE

This transmitter has the option of autoranging over the conductivity range of 0 -2,000,000 µs/cm or being restricted tothe specific manual ranges (see step 7on the following page).

6. The Autorng (auto range) is a toggle (or incrementbetween On and Off) which enables or disables theauto range function. Press the up or down arrow toselect On or Off as desired. The On setting turns onthe auto range function and preempts Manrng.Press ENTER.

Continued on page 4-5.

4-4

Return toMenu

Screen

PROG key

4-5


7. The Manrng (manual range) prompt asks for thefixed range used by the process measurement.Autorng must be Off to enable. Manual range isused for improved accuracy within the selectedrange.

For the “Hi” range setting, Manrng is

Number0 1,100 - 11,000 µS/cm1 11,000 - 110,000 µS/cm2 110,000 - 1,200,000µS/cm3 N/A

For the “lo” range setting, Manrng isNumber

0 80 - 800 µS/cm1 800 - 8,000 µS/cm2 8,000 - 80,000 µS/cm3 80,000 - 400,000 µS/cm

Select the desired range using the up/down arrowkeys. Press ENTER.

NOTE

The tables above use absolute conduc-tivity values and a cell constant of 1.Multiply the table values by your sen-sor’s cell constant to adjust range foryour sensor (refer to Table 5-1 forNominal Cell Constants).

8. The tEMP prompt is used to determine which unitswill be used with the temperature reading displays.Units available are °C or °F. The IRC editing keys areused to scroll between these. The default value is °C.Choose the appropriate units and press ENTER.

9. The OUtPUt prompt is used to determine whichengineering units are shown with the current outputdisplay. The units available are Cur (mA) and %.The IRC editing keys are used to scroll betweenthese. The default is Cur (mA). Select the desiredoutput and press ENTER.

10. The COdE prompt is used to identify the security “Id”Code number of the unit (see Figure 4-3). The numberentered here determines the “Id” code number used tounlock the security feature and allow access to themenu programs and program segments. The limits arebetween 000 and 999. New transmitters are shippedwith the code set to 000 which disables the feature,(allows access to all menus). If no key is pressed fortwo minutes the code will need to be entered again.Use the IRC editing keys to set the desired securitycode. Press ENTER.

NOTEIf this code has been changed or thenumber misplaced, entering 555 at the“Id” prompt and pressing ENTER willdisplay the current code. Access will notbe granted, however, until you EXIT tothe process display, select program toenter (CALIBRATE, PROGRAM, orDIAGNOSE), press ENTER again, andenter CODE # just displayed.

11. Press EXIT to return to normal operation.

FIGURE 4-3. Security Code prompt.


Id 0 0 0EXIT NEXT ENTER

TABLE 4-1. Program Menu Mnemonics

Current output menu header 4mA current output (minimum) 20mA current output (maximum) Current output on hold System disability fault condition Milliamp output response time dampening Current output test value

Temperature menu header Automatic temperature compensation Manual temperature compensation Temperature sensor type

Display menu header Conductivity measurement type: t, NOH, HCl, HSO, HSH! LO/HI measurement range Autorange on or off toggle#" Manual ranges used for narrow, higher linearity

Associated with rangeWhen range = Hi, Manrng = 0, 1, 2When range = Lo, Manrng = 0, 1, 2, 3 (see Table 1-2)

°C / °F toggle selection Current (mA) or % output toggle Security code

4-6


5-1


KEYPRESS COMMANDS

Menu Segment/PromptArea


5.1 ACCESSING THE CALIBRATE MENU

The “Calibrate” menu allows the transmitter and sensorloop to be calibrated to known temperature and conduc-tivity values. This menu also accesses two-point tempera-ture calibration operation to establish the temperatureslope.

Calibrating the Transmitter/Sensor loop may proceedafter proper power and sensor wiring.

Figure 5-1 illustrates the relationship between theCalibrate Menu and its sub-menus. Each sub-menuleads to a series of prompts that are used to edit trans-mitter parameters.

Calibration may be successfully accomplished if the fac-tory settings identified in Table 3-1 are satisfactory or ifthe transmitter has been properly programmed perSection 4.0 to match the intended process applicationrequirements.




ftEXIT NEXT ENTER

EXIT NEXT ENTER

EXIT NEXT ENTER

FIGURE 5-1. Calibration Menu Segments

EXIT NEXT ENTER

tEXIT NEXT ENTER

tEXIT NEXT ENTER

tEXIT NEXT ENTER

-EXIT NEXT ENTER

EXIT NEXT ENTER

tMEXIT NEXT ENTER

ttEXIT NEXT ENTER

EXIT NEXT ENTER

tMEXIT NEXT ENTER

tMEXIT NEXT ENTER

W tEXIT NEXT ENTER


Exit Enter

SECTION 5.0START-UP AND CALIBRATION

5-2


5.2 CALIBRATE MENU (Toroidal Sensors)

For initial start-up where toroidal measurements are beingmade, do the following:

Figure 5-2 illustrates the relationship between the CalibrateMenu and its menu segments (sub-menus). Each menusegment leads to a series of prompts that are used to editthe transmitter’s parameters.

1. To access the CALIbrAtE menu, press the CAL key onthe Infrared Remote Control. If security has beenenabled, the secondary process display will be replaced

with a prompt asking for the “Id”. Using the IRC editingkeys, enter the “Id”. If the correct “Id” is entered, theCALIbrAtE menu will appear when ENTER is pressed.If CALIbrAtE menu does not appear when ENTER ispressed, see Section 4.4, step 10, for procedure to findcorrect code.

NOTE

Reset can be pressed at any step to returnto the process display and override anyvalue not previously entered.

EXIT NEXT ENTER

EXIT NEXT ENTER

EXIT NEXT ENTER

EXIT NEXT ENTER

EXIT NEXT ENTER

EXIT NEXT ENTER

Returnto MainScreen

EXIT ENTER

EXIT NEXT ENTER

./ EXIT ENTER

0 EXIT NEXT ENTER

./ EXIT ENTER

. /20 EXIT ENTER

./ EXIT NEXT ENTER

./ EXIT NEXT ENTER

CAL key

t,%t,%

%

t

t

%

%

%

FIGURE 5-2. Calibrate Menu

5-3


2. When the CALlbrAtE menu segment has beenaccessed, press the NEXT and ENTER commands toaccess the CELL menu segment with the flashing cellconstant prompt.

3. Utilizing the arrow keys on the IRC, generate the cor-rect cell constant of the sensor being used.

NOTECell constants are sensor dependent.Table 5-1 below lists the nominal cell con-stants for the four sensors compatible withthe Model 3081/81T.

4. Press ENTER to activate selected cell constant andreturn to the CELL COnSt menu segment.

5. Press NEXT to enter the SEnSOr 0 menu segmentand press ENTER to access the do SEnSOr 0 sub-segment. With the attached sensor stabilized in dryair, press ENTER again to zero the sensor.

6. CALlbrAtE will show on the display. Press ENTERand CAL will display. Immerse the sensor in a solu-tion of known conductance, and enter the value of thestandard. The horizontal arrows will highlight the digit(including µS to mS and decimal positions) to bechanged and cause it to blink. The vertical arrows willincrease or decrease the currently highlighted (andblinking) digit. The display will change from a randomnumber to the input value. It should be calibrated atmiddle of the chosen manual range for maximumaccuracy (see Section 4.4, step 7).

NOTE1. If Cal Error shows, reset Cell Const = 1.002. This will also change the value shown

for the cell constant.3. DO NOT reenter SEnSOr 0. There is no

way out except to set the current readvalue (0 in air) to zero.

Press ENTER to return to the Calibrate menu.

5.2.1 Temperature CalibrationPress NEXT three (3) times and the tEMP AdJ promptwill be displayed. Press ENTER.

1. With the sensor in a sample solution of known tem-perature, allow the temperature of the sensor to stabi-lize for ten minutes (minimum). Utilize the editing keysof the IRC to standardize the transmitter's tempera-ture reading to that of the sample solution. PressENTER to standardize the temperature reading andreturn to the tEMP AdJ menu segment.

2. Press NEXT to enter the tEMP SLOPE menu segment.

The correct temperature slope must be entered intothe transmitter to ensure an acceptable process vari-able measurement under fluctuating process tempera-ture conditions. This can be done two ways:

A. At the tEMP SLOPE prompt it allows for input ofconductance values of the specific process solu-tion being measured.

Press ENTER. t1 will be displayed. Enter theconductance of the process solution at room/pro-cess temperature.

Press ENTER. t2 will be displayed. Warm theprocess solution to an elevated stable tempera-ture of normal operation. Adjust the t2 value tothe conductance at this higher temperature.Press ENTER. The transmitter will calculate theslope and use it in all process measurements. Ifslope error occurs, the calculated slope is no dif-ferent than the currently input slope. PressRESET.

B. Alternatively, the slope can be input directly.Press NEXT. Adj SLOPE appears. PressENTER at the prompt and input the known slope.Press ENTER.

Press EXIT to return to main display.

NOTE The range of slope is in %/°C , with amaximum of 5.0%.

5.3 CALIBRATE MENU (Percent Concentration).

The following steps can be used for initial set-up and stan-dardization where toroidal (t) sensors are employed forpercent concentration measurements.

NOTETo accurately measure % concentrations,the appropriate equation must be used.This requires changing the tYPE under thedISPLAY sub-menu in the Program menuto the correct chemical and concentration.

MODEL CELL CONSTANT

222 4.0 & 6.0

225 3.0

226 1.0

228 3.0

TABLE 5-1. NOMINAL CELL CONSTANTS*

* Check sensor labels for actual, if given.

Calibrate menu header Sensor calibration' Sub-menu header First temperature conductivity reading for slope calculation Second temperature conductivity reading for slope calculation) Sub-menu header Slope adjustment %/°C Sub-menu header Cell constant value Sub-menu header Sensor "0" conductivity in air + Reset percent concentration offset to factory default of zero (0) Sub-menu header Temperature adjustment °C/°F

1. To access the CALIbrAtE menu, press the CAL keyon the Infrared Remote Control. If security has beenenabled, the secondary process display will bereplaced with a prompt asking for the “Id”. Using theIRC editing keys, enter the “Id”. If the correct “Id” isentered, the CALIbrAtE menu will appear whenENTER is pressed. If CALIbrAtE menu does notappear when ENTER is pressed, see Section 4.4,step 10, for procedure to find correct code.

NOTEReset can be pressed at any step toreturn to the process display and over-ride any value not previously entered.

2. When the CALlbrAtE menu segment has beenaccessed, press the NEXT and ENTER commandsto access the CELL menu segment with the flashingcell constant prompt.

3. Utilizing the arrow keys on the IRC, generate thecorrect cell constant of the sensor being used.

NOTECell constants are sensor dependent.Table 5-1 lists the nominal cell constantsfor the four sensors compatible with theModel 3081/81T.

4. Press ENTER to activate selected cell constant andreturn to the CELL COnSt menu segment.

5. Press NEXT to enter the SEnSOr 0 menu segmentand press ENTER to access the do SEnSOr 0 sub-segment. With the attached sensor stabilized in dryair, press ENTER again to zero the sensor.

The CALIbrAtE menu is reaccessed.6. Press ENTER. CAL will appear. Immerse the toroidal

sensor into a solution of known percent of the chemi-cal to be measured and input that percent. Allow thesensor to stabilize at the solution temperature (about10 min).

Enter the value of the standard solution and pressENTER. “Processing” will appear when the calibration ismade; then the menu will return to CALIbrAtE.7. Press NEXT. The CELL COnSt menu segment will

appear. The cell constant will have been changed toreflect the calibration step above. Press ENTER todisplay the new cell constant.

8. Press NEXT to enter the SEnSOr 0 menu segment .Do not press ENTER unless a new air calibration isdesired.

9. Press NEXT to enter the rESEtPct menu segment.This resets the SEnSOr 0 offset value to zero.

10. Press NEXT to access the tEMP AdJ menu segment.Pressing ENTER allows access to the cursor so auser specified temperature can be input. The currenttemperature is displayed. If this is acceptable, pressENTER.

11.Press RESET to return to the process display.

5.4 ON-LINE TRANSMITTER/SENSOR CALIBRATION

For maximum accuracy, calibrate the sensor in the pro-cess. This should be done after the initial transmittercalibration and periodically thereafter as required. On-line calibration is well-suited for most toroidal measure-ments.

NOTE

The calibration adjustment allows the process con-ductivity to be adjusted to the conductivity fromother measurements. However, it can only bechanged a maximum of 5%. Greater changes willresult in a slope error message. If greater changesare required, the cell constant used in Section 5.2needs to be changed.


5-4

TABLE 5-2. CALIBRATE MENU MNEMONICS

6-1

6.1 OVERVIEWThe Model 3081T and 81T transmitters automaticallymonitor for fault conditions. The Diagnose Menu allowsthe current variable settings to be reviewed and showsfault messages indicating problems detected. Figure 6-1illustrates the relationship between the Diagnose Menuand its sub-menus. The factory-set diagnose values areillustrated in Figure 6-2. The mnemonics are defined inTable 6-1.

6.1.1 TROUBLESHOOTING

Step 1 Look for a diagnostic fault message on thedisplay to help pinpoint the problem. Refer toTable 6-2 for an explanation of the message anda list of the possible problems that triggered it.

Step 2 Refer to the Quick Troubleshooting Guide, Table6-3, for common loop problems and therecommended actions to resolve them.

MODELS 3081T/81T SECTION 6.0DIAGNOSIS AND TROUBLESHOOTING

SECTION 6.0DIAGNOSIS AND TROUBLESHOOTING

Step 3 Follow the step by step troubleshooting flowchart, offered in Figure 6-5, to diagnose lesscommon or more complex problems.

6.1.2 DISPLAYING DIAGNOSTIC VALUES

The DIAG key on the IRC is used to access theDiagnosis Menu. The menu flow is shown in Figure 6-2and the mnemonics are defined in Table 6-1.

The ShoW FLT sub-menu can be entered to show thelast three faults/warnings. The most recent is displayedfirst; NEXT scrolls through the remaining faults. PressingEXIT clears all fault/warnings and returns the SHoW FLTsegment. Disconnecting power removes all fault mes-sages from memory. The nonE is displayed when nofaults/warnings have occurred.


KEYPRESS COMMANDS Menu Segment/Prompt

Area




ftEXIT NEXT ENTER

EXIT NEXT ENTER

FIGURE 6-1. Diagnose Menu Segments

tEXIT NEXT ENTER

EXIT NEXT ENTER

tMEXIT NEXT ENTER

tEXIT NEXT ENTER

EXIT NEXT ENTER

tMEXIT NEXT ENTER

W tEXIT NEXT ENTER

EXIT NEXT ENTER

EXIT NEXT ENTER

& EXIT NEXT ENTER

tEXIT NEXT ENTER

tEXIT NEXT ENTER

tMEXIT NEXT ENTER


Exit Enter

6-2

Absolute conductivity (µS/cm or mS/cm)

Sensor cell constant used in T or

% concentration display type

& Calibration factor

No fault messages activated

3& Show fault messages

& Temperature slope in %/ °C

& Software version


Calibrate Program Diagnose

Exit Enter

Return toMain

Screen

TABLE 6-1. Diagnostic Variables Mnemonics

EXIT NEXT

& EXIT NEXT

W tEXIT NEXT ENTER

EXIT NEXT

t0 EXIT NEXT

t0 EXIT NEXT

0 EXIT NEXT

µS

FIGURE 6-2. Diagnose Values

6-3


6.2 FAULT CONDITIONSThree classes of error conditions/problems can bedetected and are differentiated by the diagnostic pro-gram. System disabling problems are faults caused byfailures in the loop or significant variations in the pro-cess. System non-disabling problems are warnings anddeal with inputted signals/values or Analog to Digitalconversion settings. The third class of detected prob-lems are error messages and occur when the calibrationlimits are exceeded.

6.2.1 DISABLING FAULTS

1. Both FAULT and HOLD annunciation fields willbecome active (see Figure 6-3).

2. The process variable will flash at the rate of 1 sec-ond ON and 1 second OFF.

3. The appropriate fault message alternates with thenormal Temperature/Current output display (seeFigure 6-3).


“ . ” /


µS/cm

FAULT

HOLD

♥

FIGURE 6-3. Disabling Fault Annunciation


“ . t W ” /


µS/cm♥

FIGURE 6-4. Non-Disabling Warning Annunciation

4. The output current loop will be forced to the non-zerofault value entered for Fault in Section 4.2.However, it will be held at the last value if faultvalue=0 and if the transmitter is not in the TEST,HOLD, or Multidrop operational modes.

5. A 0-1 mA output signal is available for external usewhen system disability conditions are active. Theseconditions drive this output to 1 mA.

6.2.2 NON-DISABLING WARNINGS

When a non-system disabling condition occurs, awarning message is displayed. The Process variabledoes not flash. The appropriate message alternates withthe Temperature/Current output display (see Figure 6-4).

If more than one fault exists, the display will sequencethrough the diagnostic messages. This will continue untilthe cause of the fault has been corrected.

FAULT

HOLD

6-4


6.3 DIAGNOSTIC MESSAGES

The Model 3081T and 81T transmitters’ diagnostics con-stantly monitor the system for possible problems. If anoperational problem is encountered, check the displayfor a fault or error message. These are displayed in the

Temperature/Current output segment of the display.Note the message and refer to Table 6-2, below, for adescription of possible problems that may have triggeredthe diagnostic message.

Message Description Action

Faults

Low temperature limit of 0.0° C is exceeded (too low). Check wiring or sensor/process temp.

Check RTD

High temperature limit of 100.0° C is exceeded (too high). Check wiring or sensor/process temp.

Check RTD

The RTD sense line fault limits have been exceeded Check wiring or Check Program/Temp

for the sensor. menu setting to verify the 100-3

sensor type connected.

The CPU has failed during RAM or EEPROM Recycle the power. If persistent contact

verification. the factory.

The transmitter has not been accurately factory calibrated. Contact factory.

The PROM failed the check-sum test. Contact factory.

3 A wrong value was detected during power-up. Recycle the power.

%$ 4# 5 Conductivity too low or open Verify the solution type setting

Simulate sensor (Figure 6-5) to check

transmitter

Replace sensor

Warnings

3 The compensated conductivity limit of 9999 mS/cm is Verify the conductivity range setting.

exceeded.

" The current range setting has been exceeded. Verify the 4 and 20 mA settings in the

Program/output menu.

3 An analog to digital conversion error has occurred. Recycle the power.

Errors

A calibration error has occurred between the standard Press RESET and repeat.

and process.

The limit for t2 in a two point calibration has been Press RESET and repeat the

exceeded ( > 5%). calibrate/temp slope menu setting.

1 1 Sensor Zero limit has been exceeded. Press RESET and repeat the cali-

brate/sensor menu setting.

3+ & An attempt to write on the EEPROM has failed. The jumper JP-1 on the CPU board

has been removed.

TABLE 6-2. Diagnostic Fault Messages.

6-5


SYMPTOM ACTIONWrong temperature reading. Perform a temperature standardization. Verify sensor's RTD.Suspected temp. compensation problem. Resistance vs. temp.; see Table 6-4; temperature may be out of range of sensor.

Check wiring. Check jumpers and RTD configuration on displayDisplay segments missing. Display inoperable. Replace Display board. If fault continues, check CPU board.Analyzer locks up; won't respond. Replace PCB stack.

Press Reset on IRC.Check batteries in IRC.

Erratic displays. Check sensors in process. Transmitter won't respond to IRC key presses. Verify and clean ribbon cable connection on CPU board.

Check batteries in IRC

Key press gives wrong selection. Replace IRC. Check ribbon cable connection on CPU board.Wrong or no current output. Verify that output is not being overloaded; remove load; replace PCB stack.

No display or indicators. Check power connections. Replace PCB stack.”Excess Input” Check sensor wiring.“Reverse Input” Perform sensor zero.“Check sensor zero” Analyzer will not zero; check 4 mA and 20 mA set points. Place sensor in air and

access zero routine (see Section 5.2).

Table 6-3 identifies some of the more common symptoms and suggests actions to help resolve a problem. In general,wiring is most commonly at fault.

6.4 QUICK TROUBLESHOOTING GUIDE

TABLE 6-3. Quick Troubleshooting Guide.

When it is apparent by grab sample analysis that thetransmitter is giving inaccurate readings, the following pro-cedure should be followed.

A. A quick visual inspection of the installation may identifythe problem. Check to be sure that the transmitter ismounted securely and that its internal parts are proper-ly connected.

B. Recheck to ensure the power supply is connected tothe correct pins in the transmitter and that power isbeing received.

C. Check the sensor to transmitter terminal wiring and thatall connections are tight. Most error messages are gen-erated by incorrect wiring and will indicate if the RDT orthe toroid are connected incorrectly.

D. The sensor must be immersed into the process streamto the top of the toroid.

E. Verify that the sensor is clean and the process is flow-ing through and around the toroid.

6.4.1 FIELD TROUBLESHOOTING

6-6


6.5 SYSTEMATIC TROUBLESHOOTINGNot all the problems encountered will be typical. If theQuick Troubleshooting Guide will not resolve the error,then try the step-by-step approach offered in this sec-tion.

Conductivity MeasurementProblem (in the process)

Remove the sensor from processand place sensor in air. Zero transmitter.

Refer to Section 5.2 and 5.3.

OK?

ConsultService Center

YES

NO

YES

YES

NO

NO

Does problemstill exist?

NOTE:Before starting this proceduremake sure that all wiring is correct.

FIGURE 6-5. Troubleshooting Flow Chart

Step 1 Follow the applicable troubleshooting flow chart below:

Step 2 Refer to the tests and instructions indicated bythe flow chart to diagnose the problem.

Place sensor in process andstandardize. Refer to Section 5.2.

OK?Restart

Transmitter

Remove sensor from process andtest in known conductivity solution

OK?

Check wiringfor short and checkjumpers for correct

configuration

Check diagnosticmessages

Refer to Table 6-2

Check for groundloops and/or

improper installation

YES NO


6.6 RTD RESISTANCE VALUESTable 6-4 is a ready reference of RTD resistance valuesat various temperatures. These are used for test andevaluation of the sensor.

NOTEOhmic values are read across the RTDelement and are based on the manu-facturer’s stated values (±1%). Allowenough time for the RTD element in thesensor to stabilize to the surroundingtemperature (10 min).

Temperature Pt-100(°C) Resistance (ohms)

0 100.0010 103.9020 107.7925 109.7330 111.6740 115.5450 119.4060 123.2470 127.0780 130.8990 134.70

100 138.50

Table 6-4. RTD Resistance Values.

Table 6-5. Conductivity Determination.

6-7

FORMULA:

EXAMPLE:

cell constant value x 1,000,000desired simulated conductivity in µs/cm

.01 x 1,000,00010 µs/cm

Use the following formula to determine the appropriate resistance value to use to simulate aconductivity value:

= resistance in ohms

= use 1,000 ohm resistance

7-1

MODELS 3081T/81T SECTION 7.0MAINTENANCE

SECTION 7.0MAINTENANCE

7.1 OVERVIEWMaintenance consists of "Preventative" and "Corrective"measures.

7.2 PREVENTATIVE MAINTENANCE

7.2.1 Sensor Maintenance. Sensor maintenanceconsists of periodic cleaning of the electrode. If the sen-sor is coated either mechanically or chemically, the sen-sor must be cleaned.

A weekly cleaning is a good starting maintenanceschedule. This schedule can then be fine tuned to thesite process.

7.2.2 Transmitter Maintenance. Transmitter mainte-nance consists of periodic calibration. A monthly cali-bration is a good starting maintenance schedule. Thisschedule can then be fine tuned to the site process.

7.2.3 Initiating HOLD Function For Maintenance. Toplace the transmitter into the Hold operational mode priorto servicing the sensor, press the HOLD key on the IRC.The message field will respond with a message concern-ing the present hold condition. Press the IRC editing keyto toggle to the On condition. Press ENTER to activateHOLD output.

Hold Mode will maintain the operating current output atthe programmed value regardless of process changes.Refer to Section 4.2, step 4, for instructions on how toset this value.

Temperature/Current output segments change to indi-cate the imposed current output level. See Figure 7-1.

The section of the LCD reserved for hold annunciation(Refer to Figure 7-1) will display HOLD when the trans-mitter is in the Hold Mode.

Always calibrate after cleaning or replacing the sensor.

To return transmitter to normal operation, press HOLDon the IRC.

Press the IRC editing key to toggle to the OFF condition.Press ENTER to disengage the HOLD output function.

µS/cm

FAULT

HOLD

♥

FIGURE 7-1. Hold Annunciation

Hold field Illuminated Imposed Current Output


2 5 0C 2 1 . 0 0


mA%

7.3 CORRECTIVE MAINTENANCERefer to Figures 7-2 and 7-3 for an exploded view of the3081T and 81T Transmitters.

Table 7-1 and 7-2 lists suggested spare parts along withpart numbers. Sales and service locations are locatedon the back pages of this manual.

7-2

FIGURE 7-2. Exploded View 3081T

Part # Description LocationOn Fig. 7-2

2002577 Pipe Mounting Bracket Not Shown23572-00 Infrared Remote Control Not Shown23593-01 Enclosure, Circuit End Cap with glass 123652-01 PCB, Display 223607-02 PCB Stack, 3081T (Fact Cal ) w/o Display 3 & 433360-00 Enclosure, Housing 533337-02 Terminal Block 633362-00 Enclosure Cover, Terminal End Cap 79550187 O-Ring, Front / Rear Cover Not Shown33342-00 Lock, Cover, Front (Order P/N 33343-00 also) Not Shown33343-00 Locking Bracket Nut (Order P/N 33342-00 also) Not Shown


TABLE 7-1. 3081T Replacement Parts and Accessories

DWG. NO. REV.

40308113 E

(1)

(2)

(3 & 4)

(5)

(6)

(7)

7-3

FIGURE 7-3. Exploded View 81T

Part # Description LocationOn Fig. 7-3

23554-01 Cable Glands Kit (Qty 2 of PG 13.5) Not Shown23541-00 Mounting Bracket 2" pipe or wall Not Shown23545-00 Panel Mounting Kit Not Shown23572-00 Infrared Remote Control Not Shown23540-01 Front Panel Assembly 133286-00 Front Panel Gasket 223652-01 PCB Display 323607-04 PCB Stack (Fact. Cal.) w/o Display 4 & 533438-02 RFI / EMI Shield 6

Screws 733293-00 Enclosure 8

Plastic Cap (shipping only) 9


TABLE 7-2. 81T Replacement Parts and Accessories

DWG. NO. REV.

40008114 C

(1)

(2)

(3)

(4 & 5)

(6)(8)

(9)

(7)

8-1

MODELS 3081T/81T SECTION 8.0PRODUCT DATA

SECTION 8.0PRODUCT DATA

Models 3081T and 81TRemote Controlled, HART SMART Two-WireConductivity Transmitters

• COMPATIBLE with HART SMART com-munication protocol and AMS (AssetManagement Solutions).

• INDUCTIVE CONDUCTIVITY AND PERCENTCONCENTRATION MEASUREMENTS with bothhigh accuracy and linearity.

• HAND-HELD INFRARED REMOTE CONTROL(IRC) link activates all transmitter functions.

• LARGE CUSTOM LCD facilitates easy viewing of measured variables, menus and fullydescriptive messages.

• USER FRIENDLY, SELF-PROMPTING MENU allows rapid programming, calibration, standard-ization, interrogation, and diagnostics.

• AUTOMATIC/MANUAL TEMPERATURE COMPENSATION ensures accurate monitoring andcontrol.

• NON-VOLATILE EEPROM MEMORY holds data in the event of a power failure.

SUPERIOR BENEFITSEasy to Use/Tight Control: Both the Model 3081Tand Model 81T two-wire conductivity transmitters incor-porate the most advanced electronics to continuouslymonitor conductivity. The Model 3081/81 ToroidalTransmitters, with the appropriate sensor, can continu-ously monitor conductivity or percent concentration in avariety of industrial and municipal processes. The trans-mitter is compatible with a large number of toroidal sen-sors. A user-friendly menu accessed by a hand-heldinfrared remote controller makes the Model 3081/81Teasy to operate. The Model 3081T’s rotatable displayscreen permits convenient monitoring and readabilityfrom almost any mounting position. These advances inuser control translate directly to easier control of indus-trial and municipal processes.

More Information Boosts Transmitter Flexibility:The analytical loop can be completed with a large num-ber of sensors offering a variety of performance specifi-cations (cell constant, mounting option, bore size) andstream interfaces (insertion, submersion, flow-through,valve retractable, and sanitary).

Continued on page 8-2


8-2

Detailed Message Display Enhances and SimplifiesUser Control: The data display provides two arrays ofcustom designed liquid crystal displays (LCD). Theupper, larger array displays process parameters. Thelower, smaller array shows temperature and current inthe standard mode. In the error mode this array pro-vides a legible, easily understood message describingthe error or fault condition. Prompts are understandableso reference back to the operation manual is minimized.

EEPROM Memory Eliminates RecalibrationFollowing Power Failure: Microprocessor technologyis incorporated into the Models 3081/81T to triggererror/status messages stored in the instrument. Thenon-volatile EEPROM holds data and settings in theevent of a power failure.

Remote Control and Digital CommunicationCapability Make Interface Convenient, Regardlessof Transmitter Location: Direct user interface is viaan infrared remote controller that provides access to aself-prompting menu for programming, calibration, stan-dardization, and interrogation. Digital communicationcapability through a Model 275 HART communicator orAMS (Asset Management Solutions) software stretchesthe user’s access from anywhere in the factory to any-where outside the factory.

Certifications Assure Safety in All Environments:The Models 3081T and 81 T have a number ofapprovals to allow installation in severe environments.Both include CE approval and applicable vibration(SAMA PMC) specifications. The Model 81 is in aNEMA 4X (IP65) weatherproof, corrosion-resistantcase.

FUNCTIONAL SPECIFICATIONSOutput: Galvanically isolated two-wire 4-20 mA withsuperimposed HART digital signal. Expandable overthe measured range and may be displayed in eithermA or % of full scale.

Calibration: Calibration is easily accomplished byimmersing the sensor in a known solution and enter-ing its value.

Configuration Security: Access to the transmitterconfiguration mode may be restricted via user select-ed security codes.

Input Menu Structure: Self-prompting menu to facili-tate inputting all basic configuration, calibration, stan-dardization, interrogation, diagnostic and testingfunctions independent of the more detailed instructionmanual. Details of the menu structure and functionflow are available on request and in the manual.

Diagnostics: The internal diagnostics can detect thefollowing:

Calibration ErrorTemperature Slope ErrorHigh Temperature Error Low Temperature ErrorZero ErrorInput Warning Output Range WarningLine FailureROM Failure Sensor Failure CPU Failure

Once one of the above is diagnosed,a specific failuremessage will be displayed.

RECOMMENDED SENSORS:Model 222 Flow-Through Toroidal Conductivity SensorModel 225 Clean-In-Place (CIP) Conductivity SensorModel 226 Submersion/Insertion Conductivity SensorModel 228 Submersion/Insertion/Retractable Toroidal

Conductivity Sensor

LOAD/POWER SUPPLY REQUIREMENTS

12.0 VDC 18 VDC 40 VDC @ ZERO LOAD 42.4 VDCLIFT OFF MAXIMUM

POWER SUPPLY VOLTAGE

1848 OHMS @ 42.4 VDC

600 OHMS @ 42.4 VDC

1848–1800–

1500–

1000–

500–

250–

0–

Lo

ad (

oh

ms)

WITHOUT HART COMMUNICATION

OPERATINGREGION


8-3

PHYSICAL SPECIFICATIONSMODEL 3081:Housing: Epoxy-polyester painted over low-copper

aluminum. Neoprene O-rings on cover. 160.5 mmx 175.3 mm x 161.3 mm (6.3 in. x 6.9 in. x 6.4 in.)

Diameter: 155.4 mm (6.1 in.) Electrical Conduit Openings: 3/4 in. FNPT Weight/Shipping Weight: 4.18 kg/4.27 kg (9.2/9.4 lb)

MODEL 81:Housing: Epoxy painted aluminum. 144 x 144 x 192 mm,

DIN size (5.7 x 5.7 x 7.6 in.)Weight/Shipping: 1.1 kg/1.6 kg (2.5 lb/3.5 lb)

POWER SUPPLY AND LOAD: A minimum loop resis-tance (load) of 250 ohms and a minimum power sup-ply of 18 volts DC is required for digital communicationas shown in the light grey area of the load/power sup-ply graph on the previous page. Total operation rangeis shown in the combined light and dark grey areas.

LOCAL READOUT: Main Display is four digits, 20 mm tall (0.8 in.) Message Display is ten digits, 7 mm tall (0.3 in.)

AMBIENT TEMPERATURE: -20 to 65°C (-4 to 149°F)

AUTOMATIC TEMPERATURE COMPENSATION:3-wire Pt 100 RTD Conductivity: 0 to 200°C (32 to 392°F)% Concentration: 0 to 100°C (32 to 212°F)

RELATIVE HUMIDITY: 0-95% with enclosure sealed.

HAZARDOUS AREA PROTECTION: The Models 3081T/81T are certified to the following:NEMA 4X (IP65): weatherproof and corrosion-resistant housing

CE: EMI/RFI certified:EN-61326

Hazardous Area Classification:*Explosion Proof:

FM: Class I, Div. 1, Groups B, C & DClass II, Div. 1, Groups E, F, & GClass III, Div. 1

CSA: Class I, Div. 1, Groups C& DClass I, Div. 2, Groups A, B, C & DClass II, Div. 2, Groups E, F & GClass III, Div. 1

Intrinsic Safety:*FM: Class I, II & III, Div. 1

T4 T AMB= 40°C; T3AT AMB= 70°C*CSA: Class I, Div. 1

T 3C T AMB=40°C; T3 T AMB=80°C CENELEC: EEx ia IIC

T5 Tamb=40°C; T4 Tamb=65°C*Non-Incendive:

FM: Class I, Div. 2, Groups A, B, C & DCSA: Class I, Div. 2, Groups A, B, C & D T5

(Tamb=40°C)* Model 3081 only

TRANSMITTER SPECIFICATIONS @ 25°CMeasured Range: 0 to 2,000,000 µS/cmAccuracy: ± 0.5% of readingRepeatability: ± 0.25% of readingStability: 0.25% of output range/month, non-cumula-

tiveAmbient Temperature Coefficient: ± 0.1% of reading/°CTemperature Slope Adjustment: 0-5%/° C% Concentration Ranges:

Sodium Hydroxide: 0 to 12%Hydrochloric Acid: 0 to 15%Sulfuric Acid: 0 to 25% and 96 to 99%

LOOP SPECIFICATIONS (see table below)Accuracy: ± 1.0% ± 2 least significant digit

MANUAL RANGE 0 1 2 3

(20 mA setpoint)Low Range 80-800 800-8,000 8,000-80,000 80,000-400,000

(accuracy: ± 1.0%)

High Range 1,100-11,000 11,000-110,000 110,000-1,200,000 N/A

(accuracy: ± 1.0%)Wir

e T

erm

inal

11

or

12

*NOTE: Values shown are for uncompensated conductivity using a cell constant of 1.0. The conductivity values auto range from0 to 2,000,000 µS/cm with an accuracy of 5 to 10% ±150 µS/cm depending on the process conditions, installation,and the sensor used. For greater accuracy and repeatability, manual range selection is recommended.

Measurement Range (µS/cm)*


TRANSMITTER DISPLAY (Figure 8-1)The liquid crystal display (LCD) provides valuableuser information clearly identified as follows:

1. “ ” symbol flashes during HART system com-munication.

2. Continuous process display.3. Process temperature and current output display

during process operation mode.4. Options within sub-menus become visible when

in each selected menu.5. Selected menu becomes visible after the appro-

priate “Menu key” on the IRC is activated.6. “Hold” is displayed when the analyzer is in hold,

test or fault mode. Pressing the “HOLD” key onthe IRC will place the transmitter in a hold mode.

7. “Fault” is displayed should a system disablingfault occur.

INFRARED REMOTE CONTROL FUNCTIONS(Figure 8-2)All operating functions of the Models 3081T/81T areaccessed and activated through the hand-held InfraredRemote Control (IRC).1. MENU KEYS: Allows access to calibrate, program

and diagnose menus.2. VARIABLE ENTRY KEYS: Allows the operator to

enter data (ENTER), move between sub-menus(NEXT, EXIT), and set parameter values (ENTER).

3. EDITING KEYS: Allows navigation through the pre-programmed variables or editable digits. These arrowkeys scroll across digit fields when entering numbers.

4. SPECIAL ENTRY KEYS:“Hold” key activation drivesthe current output to a steady preprogrammed level.“Reset” key activation aborts the current function andexits to the on-line process display mode.

♥

HART COMMUNICATION (Figure 8-3)MODEL 275 HART COMMUNICATOR: This hand-held digital interface (pictured on front page) pro-vides a common communication link to all HARTSmart, microprocessor-based instruments fromanywhere within the factory. AMS COMPATIBILITY: AMS (Asset ManagementSolutions) is used for predictive maintenance andrecord keeping from locations even outside the fac-tory.

Digital communication, via the Model 275 alone orcombined with AMS, may be used to setup andcontrol the field device, and read the measuredvariable over the communication link.

4/20 mA + Digital250 ohm

Control System

Computer

Model 3081 or 81 SmartTransmitter

Bridge

FIGURE 8-3. HART COMMUNICATOR

Hand HeldCommunicator(“Configurator”)

1.

4.

3.

2.

7

6

5

3

1

2

4

1 0 FAULTHOLD

´mS


EXIT NEXT ENTER

0 00 0 mA%

FIGURE 8-1. Transmitter Display

FIGURE 8-2. Infrared Remote Control

8-4


8-5

ORDERING INFORMATIONThe Model 3081T and Model 81T Smart Two-Wire Microprocessor Transmitters are housed in weather-proof, corrosion-resistant housings. Standard features include both microsiemen and percent (%) concentra-tion measurements, automatic and manual ranging, automatic temperature compensation, 4-20mA isolatedoutputs, hand-held infrared remote control, and HART digital communications.

NOTES: Communication with the Model 3081T and Model 81T may be accomplished by any one of the following four methods:• Hand-held infrared Remote Control (IRC) • HART® protocol support host • Model 275 HART® Communicator • AMS Server

MODEL / PN DESCRIPTION515 DC Loop Power Supply230A High - Low Alarm Module23545-00 Panel Mounting Kit (Model 81)23572-00 Infrared Remote Controller (Required but can control multiple transmitters)2002577 2 in. Pipe Mounting Kit (Model 3081) (formerly code 07)9240048-00 Stainless Steel Tag (Specify marking) (formerly code 11) (Model 81)9241178-00 Stainless Steel Tag (Specify marking) (formerly code 11) (Model 3081)

TABLE 8-1. Accessories

MODEL3081 T SMART TWO-WIRE MICROPROCESSOR TRANSMITTER

CODE REQUIRED SELECTION (see note)01-20 LCD (Infrared Remote Control - included)01-21 LCD (Infrared Remote Control - not included)

CODE REQUIRED SELECTION (see note)01-20 LCD (Infrared Remote Control - included)01-21 LCD (Infrared Remote Control - not included)

CODE AGENCY APPROVALS67 FM approved, Intrinsically Safe (when used with approved sensor and safety barrier) and Explosion Proof69 CSA approved, Intrinsically Safe (when used with approved sensor and safety barrier) and Explosion Proof73 CENELEC approved, Intrinsically Safe (safety barrier required)

CODE AGENCY APPROVALS67 FM approved, Intrinsically Safe (when used with approved sensor and safety barrier)69 CSA approved, Intrinsically Safe (when used with approved sensor and safety barrier)73 CENELEC approved, Intrinsically Safe (safety barrier required)

MODEL81 T SMART TWO-WIRE MICROPROCESSOR TRANSMITTER

3081 T - 01 - 20

9-1

MODELS 3081T/ 81T SECTION 9.0REMOTE COMMUNICATIONS

SECTION 9.0REMOTE COMMUNICATIONS

4-20 mA + Digital

250 ohm

Control System

Computer

Model 3081 C Smart

Transmitter

Bridge

FIGURE 9-1. HART Communicator

Hand HeldCommunicator(“Configurator”)

This section discusses the remote communicationbetween the Model 3081/81 transmitter and a host com-puter. The transmitter is powered with a 12.0 - 42.4Vdcinput with a current variable between 4 and 20 ma. Thiscurrent carries the conductivity and temperature datadetected by the sensor. A separate protocol has beendeveloped to superimpose a digital signal on the currentloop that also contains the pertinent information specificto the transmitter (type, serial number, sensor includingcell constant, etc.) and the measurement environment(conductivity, temperature, etc.).

9.1 HART COMMUNICATIONThe transmitter uses a hand-held HART communicator asthe interface device. The HART Communicator allowviewing of all important transmitter data and program-ming/ changing of device parameters. Information can bedownloaded from the transmitter, transferred to a com-puter for analysis, record keeping and optimization, andre-input into the transmitter or moved to another transmit-ter.The HART communicator will operate from any wiring ter-mination point in a 4-20 mA loop, provided a minimumload resistance of 250 ohms is present between the trans-mitter and power supply (see Figure 9-1). The HARTCommunicator uses a bell 202 frequency shift keying(FSK) technique. This technique superimposes high-fre-quency digital communication signals on the standard 4-20 mA current loop without disturbing the 4-20 mA signal.The system menus for toroidal conductivity are given inFigure 9-2. More specific information on HART commu-nications can be obtained from the HART CommunicationFoundation, Austin, TX.

9.2 AMS COMMUNICATIONThe AMS (Asset Management Solutions) consists ofoperation and application software designed to calibrate,control, provide historical information, and do predictivediagnosis on the transmitter used with a manufacturingprocess. These functions are performed in the Windows95 environment (see Figure 9-3) that duplicates and cen-tralizes functions traditionally performed in the plant. Thisoptimizes operator efficiency and centralizes permanentrecord keeping.AMS is dependent on three separate technologies. First,the transmitter must contain advanced digital fielddevices. This can include multivariables and predictiveparameters such as those in the HART compatible trans-mitters. Second, the transmitter must be able to recog-nize an enabling communication technology such asHART or Fieldbus. Third, there must be available specificapplication software designed to receive and process cal-ibration, configuration and device diagnostics. In addi-tion, the software contains algorithms for predictive main-tenance and regulatory compliance record keeping. The AMS data is integral to the HART signal carried onthe 4-20 mA signal current. All HART transmitters can beconfigured, controlled and interrogated by AMS via aHART compatible modem. A fully operational AMS sys-tem consists of three products: (1) the Field Server whichis the AMS operations software, (2) the Field Managerwhich is the AMS application software, and (3) the HARTmodem which is the communication link. Additional infor-mation, including upgrades, renewals, and training, areavailable from Fisher-Rosemount Systems, Inc.,Burnsville, MN.

9-2

MODELS 3081T/81T SECTION 9.0REMOTE COMMUNICATIONS

1 PROCESS VARIABLES—I VIEW FLD DEV VARS- I (pv)| | 2 (temp)| | 3 (A)| 2 VIEW PV-ANALOG 1-1 (PV is)| | 2 (pv)| | 3 (PV % rnge)| | 4 (PV AO)| 3 (View status)|2 DIAG/SERVICE—1 TEST DEVICE------- 1 (View status)| | 2 (Master reset)| | 3 (View history)| || 2 (Loop test)| 3 CALlBRATION— 1 STANDARDIZE PV-------- 1 (Begin procedure)| | | 2 (pv)| | | 3 (Cell constant)| | | 4 (Cell factor)| | || | INITIAL SETUP-------- 1 (Sensor zero)| | | 2 (pv)| | | 3 (Cell const)| | | 4 (Cell factor)| | | 5 (Slope)| | | 6 (Temp slope cal)| | || | 3 ADJUST TEMPERATURE 1 (Begin procedure)| | 2 (temp)| | 3 (tempcomp)| | 4 (Man. temp)| || 4 (D/A trim)| 5 (Hold mode)|3 BASIC SETUP--------1 (Tag)| 2 PV RANGE VALUES—I (PV LRV)| | 2 (PV URV)| | 3 (pv)| | 4 (PV % rnge)| | 5 (Xfer fun)| || 3 DEVICE INFORMATION (1 Tag)| | 2 (Descriptor)| | 3 (Message)| | 4 (Snsr text)| | 5 (Date)|4 DETAILED SETUP-------- 1 SENSORS--------1 MAIN SENSOR-------- 1 (PV is)| | | 2 (Meas. range)| | | 3 (Slope)| | | 4 (Cell const)| | | 5 (Cell factor)| | || | 2TEMPERATURE-------- 1 (Temp comp)| | 2 (Man. temp)| | 3 (Temp Snsr)| || 2 SIGNAL CONDITION-------- 1 (PV LRV)| | 2 (PV URV)| | 3 (pv)| | 4 (Cond % rnge)| | 5 (Cond xfer fun)| || 3 OUTPUT CONDITION---- 1 ANALOG OUTPUT---- 1 ANALOG OUTPUT-------- 1 PV AO)| | | 2 (PV AO Damp)| | | 3 (PV Hold)| | | 4 (PV Fault)| | | || | | 2 (Loop test)| | | 3 (D/A trim)| | || | 2 HART OUTPUT-------- 1 (Poll addr)| | 2 (Temp unit)| | 3 (PV is)| | 4 (Burst option)| | 5 (Burst mode)| | 6 (Num resp preams)| || 4 DEVICE INFORMATION 1 (Tag)| | 2 (Descriptor)| | 3 (Message)| | 4 (Sensor text)| | 5 (Date)| || 5 LOCAL DISPLAY-------- 1 (Xmtr ID)| 2 (AO LOI units)|5 REVIEW-------- 1 SENSORS

2 OUTPUTS3 DEVICE INFORMATION4 LOCAL DISPLAY

FIGURE 9-2. MODEL 275 HART® COMMUNICATOR MENU TREE – CONDUCTIVITY (t)

MODELS 3081T/81T SECTION 9.0REMOTE COMMUNICATIONS

FIGURE 9-3. AMS QUICK REFERENCE GUIDE - MAIN MENU TOOLS

9-3

A-1

Display Timeout. The display returns to the Process display when theRESET key is pressed, or if no key has been pressed for thetimeout period.

The normal timeout period is 2 minutes.

During buffer calibration, the timeout period is 20 minutes.When in the Hold and Test Modes, the timeout feature isdisabled.

Error Condition An error condition (“Std Err”, “SLOPE Err LO”, or “SLOPE Err HI”) occurredduring calibration due to a calculated value exceeding a calibration limit.

The appropriate error message is displayed in the Temperature/Current outputdisplay area.

Fault Condition A system disabling condition.• The Fault and Hold display areas illuminate.• The process variable flashes. • An appropriate fault message appears in the Temperature/Current

output display area.• If not in the Test or Hold Modes, the output current goes to the

non-Zero fault value.

Menu segment A term used to define submenus, within the menu programs, that are used to select the set of prompts required to set-up the transmitter during configuration

Item/Value Item refers to a parameter contained in a list of parameters. (e.g., "On" and "OFF").

Value refers to a parameter value that may be edited (e.g., CAL “1”000 µS/cm).

Main Menus Those menus available to calibrate, set up, and diagnose transmitter operation using variables other than the factory default settings.

Process Display The Main display consists of:

• the Primary process variable (conductivity, % concentrationor resistivity) in large numerals (in the top half of the display), and

• the temperature/current output measurements (shown in the lower portion of the display).

Prompt A message that appears in the temperature/current output display area requesting a response from the operator that is either a numerical value, or an item from the list associated with the parameter being edited.

Mnemonics Short descriptions that aid or help memory.

MODELS 3081T and 81T APPENDIX AGLOSSARY

APPENDIX AGLOSSARY

RTD Resistive Temperature Device used to provide temperature signal to instrument.

Special Entry keys Those keys on the IRC pressed to access the DIAGNOSE, HOLD and RESETfunctions of the transmitter.

• The Diagnose function gives access to information about absoluteconductivity, sensor (cell constant value, calibration constant, and cellfactor), temperature slope, transmitter software version and faultmessages, to aid in interpretation of Fault and Warning conditions.

• The HOLD function is used to maintain the current output value to a predetermined value while enabled.

• The RESET function aborts the current operation and returns to the Process Display Screen.

Temperature Offset A value calculated by the instrument to make RTD measurement displayed match site value. Calculated during the TEMPERATURE ADJUSTMENT function to match the RTD reading with a known site standard.

Warning Conditions. When a non-system disabling condition occurs, an appropriate message is displayed in the temperature/current output display area.

Raw Conductivity Conductivity that is not factory or process calibrated, or compensated for tem-perature.

Absolute Conductivity Conductivity that is factory calibrated, but not process calibrated or compen-sated for temperature.

Conductivity Conductivity that is factory and process calibrated and compensated for tem-perature.

Resistivity A value equal to the inverse of the conductivity.

MODELS 3081T and 81T APPENDIX AGLOSSARY

GLOSSARY (Continued)

A-2

WARRANTY

Goods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from defects in workmanship andmaterial under normal use and service for a period of twelve (12) months from the date of shipment by Seller. Consumables, pHelectrodes, membranes, liquid junctions, electrolyte, O-rings, etc. are warranted to be free from defects in workmanship and mate-rial under normal use and service for a period of ninety (90) days from date of shipment by Seller. Goods, part(s) and consumablesproven by Seller to be defective in workmanship and / or material shall be replaced or repaired, free of charge, F.O.B. Seller's fac-tory provided that the goods, parts(s), or consumables are returned to Seller's designated factory, transportation charges prepaid,within the twelve (12) month period of warranty in the case of goods and part(s), and in the case of consumables, within the ninety(90) day period of warranty. This warranty shall be in effect for replacement or repaired goods, part(s) and consumables for theremaining portion of the period of the twelve (12) month warranty in the case of goods and part(s) and the remaining portion of theninety (90) day warranty in the case of consumables. A defect in goods, part(s) and consumables of the commercial unit shall notoperate to condemn such commercial unit when such goods, parts(s) or consumables are capable of being renewed, repaired orreplaced.

The Seller shall not be liable to the Buyer, or to any other person, for the loss or damage, directly or indirectly, arising from theuse of the equipment or goods, from breach of any warranty or from any other cause. All other warranties, expressed or implied arehereby excluded.

IN CONSIDERATION OF THE STATED PURCHASE PRICE OF THE GOODS, SELLER GRANTS ONLY THE ABOVE STATEDEXPRESS WARRANTY. NO OTHER WARRANTIES ARE GRANTED INCLUDING, BUT NOT LIMITED TO, EXPRESS ANDIMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

RETURN OF MATERIAL

Material returned for repair, whether in or out of warranty, should be shipped prepaid to:

Rosemount Analytical Inc.Uniloc Division

2400 Barranca ParkwayIrvine, CA 92606

The shipping container should be marked:

Return for RepairModel _______________________________

The returned material should be accompanied by a letter of transmittal which should include the following information (make a copyof the "Return of Materials Request" found on the last page of the Manual and provide the following thereon):

1. Location type of service, and length of time of service of the device.2. Description of the faulty operation of the device and the circumstances of the failure.3. Name and telephone number of the person to contact if there are questions about the returned material.4. Statement as to whether warranty or non-warranty service is requested.5. Complete shipping instructions for return of the material.

Adherence to these procedures will expedite handling of the returned material and will prevent unnecessary additional charges forinspection and testing to determine the problem with the device.

If the material is returned for out-of-warranty repairs, a purchase order for repairs should be enclosed.

Credit Cards for U.S. Purchases Only.

The right people,the right answers,right now.

ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE

http://www.raihome.com

Emerson Process Management

Rosemount Analytical Inc.2400 Barranca ParkwayIrvine, CA 92606 USATel: (949) 757-8500Fax: (949) 474-7250

http://www.raihome.com

© Rosemount Analytical Inc. 2002

manual: 3081-t two-wire conductivity transmitter

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