ami hydrazine
TRANSCRIPT
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AMI Hydrazine Version 4.00 and later
A-96.250.501 / 070606
O p e r a t o r ’ s M
a n u a l
SWAN sets the standard
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© 2007, SWAN ANALYTISCHE INSTRUMENTE AG, Switzerland, all rights reserved
subject to change without notice
Customer Support
SWAN and its representatives maintain a fully trained staff of technical specialists
around the world. For any technical question, contact your nearest
SWAN representative, or the manufacturer:
SWAN ANALYTISCHE INSTRUMENTE AG
Turicaphonstrasse 29
8616 Riedikon
Switzerland
Internet: www.swan.ch
E-mail: [email protected]
Document Status
Title: Monitor AMI Hydrazine Operator’s Manual
ID: A.96.250.501
Revision Issue
01 June 2007
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AMI HydrazineTable of Contents
A-96.250.501 / 070606 1
Table of Contents1. Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Warning Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 General Safety Regulations . . . . . . . . . . . . . . . . . . . . . . . 6
1.3.1 Legal Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3.2 General Inspection and Maintenance Duties . . . . . . . . 6
1.3.3 Spare Parts and Disposables . . . . . . . . . . . . . . . . . . . 6
1.3.4 Modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.3.5 Electrical shock hazard . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Restrictions for use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2. Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Description of the system. . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Instrument Specification. . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Instrument Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.4 Display, Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5 Software Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.6 Changing parameters and values . . . . . . . . . . . . . . . . . . 17
3. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.1 Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3 Connecting sample and waste. . . . . . . . . . . . . . . . . . . . . 19
3.4 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.4.1 Electrical connection scheme . . . . . . . . . . . . . . . . . . . 21
3.4.2 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.5 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223.6 Relay Contacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.6.1 Alarm Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.6.2 Relay Contacts 1 and 2 . . . . . . . . . . . . . . . . . . . . . . . . 23
3.7 Signal Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.7.1 Signal Outputs 1 and 2 (Current Outputs) . . . . . . . . . . 25
3.7.2 Signal Output 3 (Optional) . . . . . . . . . . . . . . . . . . . . . . 25
3.8 Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.8.1 Interface RS232 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.8.2 Interface RS485 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.9 Installation of Filter Vessel, Electrode andDiisopropylamine Bottle . . . . . . . . . . . . . . . . . . . . . . . . . . 27
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AMI HydrazineTable of Contents
4. Instrument Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.1 Maintenance Schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2 Stop Operation before Maintenance . . . . . . . . . . . . . . . . 30
5.3 Cleaning of Sample Supply/Filters. . . . . . . . . . . . . . . . . . 30
5.4 Cleaning of Protective Filter . . . . . . . . . . . . . . . . . . . . . . . 30
5.5 Maintenance of Hydrazine Sensor. . . . . . . . . . . . . . . . . . 31
5.6 Maintenance of Reference Electrode. . . . . . . . . . . . . . . . 32
5.7 Changing Diisopropylamine Bottle. . . . . . . . . . . . . . . . . . 32
5.8 Changing the Diffusion Tube . . . . . . . . . . . . . . . . . . . . . . 335.9 Maintenance of Flow Cell. . . . . . . . . . . . . . . . . . . . . . . . . 34
5.9.1 Longer Stop of Operation. . . . . . . . . . . . . . . . . . . . . . . 36
6. Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.1 Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.2 Hydrazine Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7. Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.1 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407.2 Error List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
A. Programm Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
B. Profibus (Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
B.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
B.2 Cyclic Data Telegram. . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
B.3 Customizing the Cyclic Data Telegram . . . . . . . . . . . . . . 48
B.4 Data Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
B.5. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53B.5.1 Device Master Files (GSD). . . . . . . . . . . . . . . . . . . . . . 53
B.5.2 GSD File Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
B.6. Acyclic Data Communication . . . . . . . . . . . . . . . . . . . . . . 54
C. Modbus (Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
C.1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
C.2. Data and Control Functions . . . . . . . . . . . . . . . . . . . . . . . 57
C.3. Function Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
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D. Programm List and Explanations. . . . . . . . . . . . . . . . . 63
1 Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
2 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
E. Default Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
F. Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
http://ami_sodiump_en02.pdf/
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AMI Hydrazine AMI Hydrazine - Operator’s Manual
AMI Hydrazine - Operator’s ManualThis document describes the main steps for instrument setup,operation and maintenance.
1. Safety Instructions
This chapter contains general information assuring safe operation
of the instrument. More safety instructions are given throughout thismanual, at the respective locations where observation is most
important.
Strictly follow all safety instructions in this publication.
1.1 General
The instructions included in this section explain the potential risksassociated with instrument operation and provide important safetypractices designed to minimize these risks.
If you carefully follow the information contained in this section, youcan protect yourself from hazards and create a safer workenvironment.
Target audience
Operator: Qualified person who uses the equipmentfor its intended purpose.
Instrument operation requires thorough knowledge of applications,
instrument functions and software program as well as all applicablesafety rules and regulations.
Qualification, Training
To be qualified for instrument operation, you must read andunderstand the written instructions in this operator’s manual, haveappropriate training (by SWAN Service Technician), and know thesafety rules and regulations.
Operator’s Manual Location
The AMI Powercon Operator’s Manual shall be kept in proximity ofthe instrument.
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AMI HydrazineSafety Instructions
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1.2 Warning NoticesThe symbols used for safety-related notices have the following
significance:
WARNINGSymbols
Warning
Generally, the triangular warning symbol indicates the possibilityof personal injury or even loss of life if instructions are not followed,e.g.
electrical shock hazard
harmful to health
inflammable
AttentionSymbols
Attention
The attention symbol indicates the possibility of equipmentdamage, malfunctions or incorrect process results if instructionsare not followed.
WarningFor safe instrument installation and operation you must read andunderstand the instructions in this manual, as well as the MaterialSafety Data Sheets (MSDS) of diisopropylamine.
Only SWAN trained and authorized personnel shall perform thetasks described in this document.
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AMI HydrazineSafety Instructions
1.3 General Safety Regulations1.3.1 Legal Requirements
The user is responsible for proper system operation.
All precautions must be followed to ensure safe operation of the
instrument.
1.3.2 General Inspection and Maintenance Duties
The SWAN instrument shall only be operated in optimal running
condition. The preventive maintenance procedures listed in thismanual must be performed.
In case of safety relevant deficiencies, SWAN must immediately beinformed.
1.3.3 Spare Parts and Disposables
Use only official SWAN spare parts and disposables. If other partsare used during the normal warranty period, the manufacturer’swarranty is voided.
1.3.4 Modifications
Modifications and instrument upgrades shall only be carried out byan authorized Service Technician. SWAN will not acceptresponsibility for any claim resulting from unauthorized modificationor alteration.
1.3.5 Electrical shock hazard
WARNING
If proper operation is no longer possible, the instrument must bedisconnected from all power lines, and measures must be taken toprevent inadvertent operation.
To prevent from electrical shock, always make sure thatthe ground wire is connected.
Service shall be performed by authorized personnel only.
Whenever electronic service is required, disconnectinstrument power and power of devices connected to
• relay 1,
• relay 2,
• alarm relay.
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AMI HydrazineSafety Instructions
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1.4 Restrictions for useAlcalizing
ReagentPlease correct the pH of the sample only with Diisopropylamine,p.a. However, Diisopropylamine is not included in delivery. Pleasebuy it from your local supplier: E.g. VWR Merck (6x 1l: 803646),Fluka (1x 1l: 38300) or Riedel-de Haen (1x 1l: 62580).
SampleRequire-
ments
No sand (or other polishing material) or oil are allowed in thesample.
The instrument is specified for a max. pressure of 2 bar (28 psi). Ifthe sample pressure exceeds 2 bar, please mount a pressure
reduction in front of the instrument inlet.Phosphates may interfere with the hydrazine measurement.
The pH value of the sample must be equal or higher than pH 7.
FlowInterruption
High concentrations of Diisopropylamine reagent may attack theacrylic material of the flow cell. This can cause cracks and renderthe flow cell completely unusable. This will not happen duringnormal operation. However, if the sample flow is stopped, undiluteddiisoproylamine will diffuse through the diffusion tube and cancause damage. Therefore, the following rules should be observed if
the sample flow is stopped for more than one day: Remove diisopropylamine bottle and close it. Keep it in a
safe place for further use.Note: Diisopropylamine is highly inflammable and toxic.Wear googles and protective clothing! Do not breathevapours! Avoid contact with skin!
Read the safety data sheet carefully before use
Screw an empty reagent bottle on the holder.
Let the sample flow for another 30 minutes to rinse out theDiisopropylamine dissolved in the diffusion tubing material.
Stop sample flow.
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AMI HydrazineProduct Description
2. Product Description
2.1 Description of the system
Application Hydrazine is used in power plants as an oxygen scavenger. It helpsto remove oxygen, which may cause corrosion in the power plant.The reaction of hydrazine with oxygen produces nitrogen andwater.
Measuringprinciple
3-electrode amperometry:
The sensor consists of two platinum electrodes and a referenceelectrode. A voltage is applied to the platinum electrodes and kepton a optimum level by the reference electrode. The hydrazine in thesample generates a small current on the platine pin electrode,which is proportional to the hydrazine concentration.
For an optimal sensitivity and stability, a rotor continuously cleansthe surfaces of the platinum electrodes (hydrodynamic cleaning).The flow sensor measures the rotations of the rotor to detectsufficient flow.
The signal of amperometric systems depends on flow. The constanthead guarantees a constant flow if the sample always overflowsinto the longer constant head tube.
Temperature compensation is done automatically.
On-lineoperation
The measurement of hydrazine requires a high pH of the sample.The AMI Hydrazine buffers the pH to pH>10.5 by addingdiisopropylamine. The diisopropylamine is dissolved in the waterwhile flowing through a diffusion tube.
The sample enters at the sample inlet , passes the filter and theneedle valve, where sample flow is adjusted and flows through the
diffusion tube in the diisopropylamine bottle, picking updiisopropylamine and reaching pH>10.5. Afterwards, the samplefills the constant head . Sample must always overflow into thelonger constant head tube (waste) to ensure constant flow andpressure at the hydrazine sensor.
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AMI HydrazineProduct Description
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A large part of the sample flows into the shorter overflow tube tothe hydrazine sensor , turns on the rotor and leaves it into waste.
A small part of the sample leaves thje instrument by the longerconstant head tube.
The rotation of the rotor is monitored with a flow detector to assuresufficient sample flow. An inconsistent sample flow causes the rotorto turn slowly (or stop) and produces a system error.
3
1
2
4
8
7
6
5
9
10
2
11
1 sample inlet
2 filter
3 needle valve
4 sample flow tohydrazine sensor
5 hydrazine sensor
6 flow measurement
7 temperaturemeasurement
8 constant head overflow
9 sample outlet/waste
10 grab sample
11 Diisopropylaminebottle with diffusiontube
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AMI HydrazineProduct Description
2.2 Instrument SpecificationSample
Require-ments
Flow rate: approx. 15 l/h
Sample pressure inlet: 0.15 - 2 bar (3 - 28 PSI)
Sample outlet: pressure-free
Temperature range: 15 - 45 °C (41 - 113 °F)
No oil, no grease, no sand.
pH value of the sample must be equal or higher than pH 7.
Reagent consumption: < 1l Diisopropylamine per month (25 °C).
On-siteRequire-
ments
Sample inlet: Tube 4x6 mm.Drain: 14x20 mm (1/2”) hose nozzle which must end
in convenient atmospheric waste of sufficientcapacity.
Power: 85-265 VAC, 47-63 Hz or 24 VDC, isolated,power consumption max. 20 VA.
MeasuringRange
Hydrazine
Range: 0.1 - 600ppb
Accuracy: ±5% of reading up to 200 ppb,
±15% up to 600ppb, or ±2ppb
Stability: ±5% of reading per month, or ±2ppb per month
Response time: 90% of change in 60 sec after the sample entered
the flow cell.
MeasuringRange
Temperature
Measuring range: up to 60°C
Resolution: 0.1°C
Sample FlowMeasurement
With Swan sample flow meter and alarm in cases of insufficient
sample flow
SafetyFeatures
No data loss after power failure, all data is saved in non-volatile
memory. Overvoltage protection of in- and outputs. Galvanic
separation of measuring inputs and signal outputs.
AlarmRelay
One potential free contact for summary alarm indication for
programmable alarm values and instrument faults.
Maximum load: 1A / 250 VAC
Input One input for potential-free contact. Programmable hold or remote
off function.
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AMI HydrazineProduct Description
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Relays Two potential-free contacts programmable as
• limit switches for measuring values
• controllers
• timer for system cleaning with automatic hold function
Rated load: 1A / 250VAC
SignalOutputs
Two programmable signal outputs for measured values (freelyscaleable, linear, bilinear or logarithmic) or as continuous controloutput (control parameters programmable).
Current loop: 0/4 - 20mA
Maximum burden: 510ΩThird signal output with the same specifications as option available.
Communi-cation Inter-
face (option)
RS232 interface for logger download with HyperTerminal or RS485
interface with Fieldbus protocol Modbus or Profibus DP V1.
ControlFunction
Relays or current outputs programmable for 1 or 2 pulse dosing
pumps, solenoid valves or for one motor valve.
Programmable P, PI, PID or PD control parameters
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AMI HydrazineProduct Description
Dimensions
Mounting: Panel: Distance between mounting holes: 254x824 mm
Screws: 6 mm in diameter
Enter
ppb
RUN
Ø 10
Exit
*
*
*
13
AMI Hydrazine
24.8°C
14:36:15
13
254280
15.3
850
824
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AMI HydrazineProduct Description
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2.3 Instrument Overview
Enter
ppb
14:36:15
AMIHydrazine
RUN
Exit
*
*
24.8°C
15.3
*
Mounting panel
Bottle holder
Diisopropylamine
bottle with diffusion
tube
Diffusion tube
Reference
electrode
Grab sample
valve
Grab sample
outlet
Needle
valve
Hydrazine
sensor with rotor
Transmitter
Temperature
sensor
Constant head
cover
Constant head
Constant headtube long
Constant head
tube short
Flow cell block
Flow sensor (behind inlet)
Sample inlet
Filter vessel and
filter
Waste
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AMI HydrazineProduct Description
2.4 Display, KeysDisplay of Measured
Value backlit LCD
Menu navigation keys
upper / lower limit not yet reachedupper / lower limit reached
control upw. / dnw.: no action
control upw. / dnw.: active, dark bar indicates control intensity
timer
timer: timing active (hand rotating)
Relay Status
motor valve: valve closed
rpm
motor valve: open, dark bar indicates approx. position
°C
Status Time
R1 Process
ValuesR2
blinking: fatal error error
HOLD input closed or cal delay: Instrument on hold (shows status of signal
outputs). Add. info see Programm List and Explanations, p. 63.
OFF input closed: Control/limit is interrupted (shows status of signal
outputs). Add. info see Programm List and Explanations, p. 63.
RUN normal operation
sample
temperature
sample
flow
Hydrazine xx.x ppb
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AMI HydrazineProduct Description
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Keys
ProgramAccess, Exit
to exit a menu or command (without accepting)
to move back to the previous menu level
to move DOWN in a menu list and to decrease digits
to move UP in a menu list and to increase digits
to open a selected sub-menu
to accept an entry
Exit
Enter
25.4°C
RUN
305 rpm
14:10:45
R1
15.3 ppbR2
1
InstallationOperation
DiagnosticsMessages
Maintenance
Main MenuEnter
Exit
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AMI HydrazineProduct Description
2.5 Software Structure1
Messages
OperationMaintenanceDiagnostics
Main Menu
Menu 4: Operation
Subset of menu 5 -
installation, but process-
related. User relevant
parameters that might need to
be modified during dailyroutine. Normally password
protected and used by the
process-operator.
Menu 1: Messages
Reveals pending errors as
well as an event history
(time and state of events that
have occurred at an earlier
point of time).
It contains user relevant data.
Menu 2: Diagnostics
Provides user relevant
instrument and sample data.
Menu 5: Installation
For initial instrument set up by
SWAN authorized persons, to
set all instrument parameters.
Can be protected by means ofa password.
Menu 3: Maintenance
For instrument calibration,
relay and signal output
simulation, to set theinstrument time. It is used by
the service personnel.
Installation
1.1
Pending ErrorsMessage List
Messages
2.1
InterfaceI/O StateSample
IdentificationSensors
Diagnostics
3.1
CalibrationSimulation
Maintenance
Set Time 01.01.05 16:30:00
4.1
Logger Relay ContactsSensors
Operation
5.1
Interface
MiscellaneousRelay Contacts
SensorsSignal Outputs
Installation
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2.6 Changing parameters and valuesChanging
para-metersThe following example shows how to change the current loop from
4-20 mA to 0-20 mA (see Programm Overview, p. 43 Installation):
Changingparameter
values
Highlight the menu item
indicating the parameter you
want to change.
Press .
Press or to highlight
the required parameter.
Press to confirm the
selection (or [Exit] to keep the
previous parameter).
The selected parameter isindicated (but not saved yet).
Press .
Yes highlighted, press to
save the new parameter. The
system reboots, the new
parameter is set.
Enter
Enter
Exit
Enter
5.2.1Signal output 1
Current loop.Parameter x Sec
Scaling 1 MinFunction Free chlorine
Curr. loop.
4-20 mA
5.2.1Signal output 1
Current loop 0-20 mAParameter Hydrazine
Function linNo
Save ?
Yes
5.2.1Signal output 1
Function lin
Parameter Hydrazine
Current loop 4-20 mA
5.2.1Signal output 1
Function lin
Parameter HydrazineCurrent loop 0-20 mA
Scaling
0-20 mA
Scaling
Scaling
5.3.1.1
Alarm High 1000 ppb
Alarm Dis
Alarm Low 0.00 ppbHysteresis 1.0 ppbDelay 5 Sec
5.3.1.1Alarm Dis
Alarm Low 0.00 ppbHysteresis 1.0 ppbDelay 5 Sec
Alarm High 30.0 ppb
Select parameter and press .
to set required value.
to confirm new value.
to exit the menu.
Enter
Enter
Exit
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AMI HydrazineInstallation
3. InstallationThe first part of this chapter describes the preparing and placing ofthe system in position for use.Restrictions on use
If exposed to weather, install a cover to protect the instrument from
insolation and precipitation. Please see also Restrictions for use, p.
7. See Instrument Specification, p. 10 for temperature limitations.
3.1 Installation Checklist
Check Instrument’s specification must conform to your AC power ratings.
Do not turn on power until instructed to do so.
On site
requirements
85-265 VAC, 47-63 Hz or 24 VDC power outlet with ground
connection and 20 VA.
Sample line with 15 l/h and 0.15 - 2 bar (3 - 28 psi).
Waste line with atmospheric drain.
See Connecting sample and waste, p. 19 and Electrical Connec-
tions, p. 19
Installation Mount the instrument in vertical position. Display should be at eye
level.
Mount the filter vessel. Connect the sample and waste line.
Electrical
Wiring
Connect all external devices like limit switches, current loops and
pumps. Connect power cord; do NOT switch on power yet!
Electrodes Install reference electrode. Connect to cable TR.
Insert temperature sensor into small opening of cover.
Diiso-proplyamine
Wear safety gloves and safety glasses. Add 20 ml high puritywater to full Diisopropylamine bottle. Slide bottle over diffusion
tubes and fix on holder.
Power-up Turn on the sample flow and wait until the rotor on the Hydrazine
sensor starts turning.
Switch on power.
Instrument
set-up
Program all parameters for external devices (interface, etc.).
Program all parameters for instrument operation (limits, alarms).
Run-in period Let the instrument run-in for approximately 30 min continuousoperation (flow on, power on). The Diisopropylamine needs
roughly 30 min to penetrate the walls of new diffusion tubes.
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3.2 MountingFor ease of operation mount the instrument so that the display is oneye level.
For the panel size, see Dimensions, p. 11
3.3 Connecting sample and waste
Sample inlet:Use plastic tube (4x6 mm) toconnect the sample line.
Waste:
Connect the 1/2” tube to the wastenozzle and place it into theatmospheric drain.
3.4 Electrical Connections
Warning
Always turn off AC power before manipulating electric parts.Grounding requirements: Only operate the instrument from an
power outlet which has a ground connection.Make sure the power specification of the instrument corresponds tothe power on site.
inlet
outlet/waste
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AMI HydrazineInstallation
Cablethick-
nesses
In order to comply with IP66, use the following cable thicknesses:
Wire Power, Relays
Use max. 1.5 mm2 / AWG 14 stranded wire with end sleeves.
Signal Outputs, InputUse 0.25 mm2 / AWG 23 stranded wire with end sleeves.
WARNING
Make sure that the devices to be connected to
relay 1
relay 2
alarm relay
are disconnected from the power before resuming installation.
WARNING
To prevent from electrical shock, do not connect the instrument tothe power unless the ground wire (PE) is connected.
Do not connect unless specifically instructed to do so.
PG 9 fittings: Cable Øouter 4 - 8 mm
PG 11 fitting: Cable Øouter 5 - 10 mm
PG 7 fittings: Cable Øouter 3 - 6.5 mm
Protect
unused
glands.
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3.4.1 Electrical connection scheme
Use only the terminals shown in this diagram, and only for the men-
tioned purpose. Use of any other terminals will cause short circuits with
possible damage to material and personnel.
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AMI HydrazineInstallation
3.4.2 Power Supply
Terminal 1 Phase L
Terminal 2 Neutral N
Attention:
It is not allowed to power external loads out of the AMI transmitter.
3.5 Input
Note: Use only potential-free (dry) contacts.
Terminals 16/42
For programming see Programm Overview, p. 43
Menu Installation
power supply connector
Neutral
Power
The protective earth cable(ground) MUST be
connected to the provided
grounding screw.
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3.6 Relay Contacts3.6.1 Alarm Relay
Note: Max. load 1 A / 250 VAC
Alarm output for system errors.
Error codes see Maintenance, p. 30.
Open during normal operation.
Closed on error and loss of power.
Terminals 10/11.
3.6.2 Relay Contacts 1 and 2
Note: Rated load 1 A / 250 VAC
Relay 1: Terminals 6/7
Relay 2: Terminals 8/9
For programming see Programm Overview, p. 43, Menu Installation
AttentionHeavy inductive or directly controlled loads (solenoid valves,
dosing pumps) must be switched by external power relays. In this
case, use the AMI relaybox which is available as an option.
Small inductive loads (max 0.1 A) as for example the coil of a
power relay can be switched directly. To avoid noise voltage in the
AMI it is mandatory to connect an snubber circuit in parallel to the
load (this procedure is not necessary if a AMI Relaybox is used)
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AMI HydrazineInstallation
Resistive loads (max. 1 A) and control signals for PLC, impulse
pumps and so on can be connected without further measures..
Actuators are using both relays: One relay contact is used for
opening (relay 1), the other for closing (relay 2) the valve, i.e. with
the 2 relay contacts available, only one motor valve can be
controlled.
Motors with loads bigger than 0.1 A must be controlled via external
power relais or an AMI Relaybox.
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3.7 Signal Outputs3.7.1 Signal Outputs 1 and 2 (Current Outputs)
Note: Max. burden 510 Ω .
If signals are sent to two different receivers, use signal
isolator (loop isolator).
Signal output 1: Terminals 14 (+) and 13 (-)
Signal output 2: Terminals 15 (+) and 13 (-)
For programming see Programm Overview, p. 43, Menu Installation
3.7.2 Signal Output 3 (Optional)
Requires the additional board for the third signal output 0/4 - 20 mA
PCB Max. burden: 510 Ω.
The third signal output is installed in the holder on the main board.
You can operate either 3. signal output OR communication
interface, not both!
Terminal 38 (+) and 37 (-).
For programming see Installation Signal output 3 in Programm
Overview, p. 43.
Third signal output
0/4 - 20 mA PCB
installed on main board
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AMI HydrazineInstallation
3.8 Interface3.8.1 Interface RS232
Terminal 50, 52, 53
The AMI Interface RS232 Print Circuit Board (=PCB) is used for
Logger download and Firmware upload. For detailed information
see the corresponding manual “AMI RS232 Interface”.
RS232 Interface PCB
3.8.2 Interface RS485
Terminal 37 PB, Terminal 38 PA
To connect several instruments by means of a network or to
configure a PROFIBUS DP connection, consult the PROFIBUS
section in this manual (Profibus (Option), p. 46). Use appropriatenetwork cable.
Note: Bus termination only by means of ON/OFF switch on the
RS485 PCB. If only one instrument is installed, or on the last
instrument in a bus, the switch must be ON.
RS485 PCB
on/off switch
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3.9 Installation of Filter Vessel, Electrode andDiisopropylamine Bottle
Position of Sensors in
the Flow Cell
ConstantHead
Mount the filter vessel.
Enter
ppb
14:36:15
AMIHydrazine
RUN
Exit
*
*
24.8°C
15.3
*
Temperature
sensor
Reference
electrode, cable
marked TR
Hydrazine sensor,
cable with BNC plug
marked H
Filter andfilter vessel
Diisoproplyamine
bottle
Holder for Diiso-
proplyamine bottle
Diffusion tube
Grab sample valve
and outlet
Screw cap
Fixing screw
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AMI HydrazineInstallation
ReferenceElectrode
1 Cautionally pull off the rubber cap from the reference electrodetip.
2 Loosen the fixing screw and insert the electrode until it stops.
3 Tighten fixing screw hand tight, take off plug cap, and connectto cable marked TR.
4 Store the plug cap and the rubber cap for interruption ofoperation.
TemperatureSensor
Fragile! Handle with care!
Insert the temperature sensor into the small opening in the cover of
the flow cell.
Check all sensor connections between AMI Hydrazine and sensors.
Diisopropyl-amine Bottle
Only install the diisopropylamine bottle if you intend to start
operation immediately. Do NOT install if no sample in
available!
Attention!
Diisopropylamine is a highly inflammable and toxic
compound. Read the safety data sheet carefully before use.
Avoid contact with skin! Do not inhale!You can fill the Diisopropylamine into the glass bottle (G45 thread),
delivered with the instrument.
If you want to connect a Merck bottle directly, you need a thread
adapter (to be ordered at Merck).
Add 20 ml high purity water into the full Diisopropylamine bottle to
limit the consumption of Diisopropylamine at the beginning. Slide
the Diisopropylamine bottle over the diffusion tubes and fix it to the
holder by the screw cap.
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AMI HydrazineInstrument Setup
A-96.250.501 / 070606 29
4. Instrument Setup After the analyzer is installed according to the previous instructions,connect the power cord. Do not switch on power, yet!
BeforeStarting
Sample Flow
Ensure the grab sample valve is closed.Ensure the sample outlet is pressure-free.
Open SampleFlow
Open the flow regulating valve to allow sample flow into theconstant head and into the waste. Sample must always overflow
into the longer constant head tubeWatch the rotor of the Hydrazine sensor. As soon as it startsturning, switch on power.First, the analyzer performs a self test, displays the firmwareversion and then starts normal operation.
Programming Program all parameters for external devices (interface, etc.). Set allparameters for instrument operation (limits, alarms).
Run-in Period Let the instrument run-in for approximately 30 min continuousoperation (flow on, power on). The Diisopropylamine needs roughly
30 min to penetrate the walls of new diffusion tubes.
Correction of Hydrazine
Sensor
If necessary, correct the instrument after at least 30 min running-in. A calibration (zero and slope) is NOT necessary.
To correct the instrument the concentration of hydrazine in thesample has to be known. Hydrazine reacts withdimethylaminobenzaldehyde in an acid solution and forms a yellowcolour. The colour intensity can be measured by a photometer.Refer to an appropriate standard method (e.g. DIN 38413).
The manual sample must be taken from the grab sample outlet of
the flow cell. Let the sample flow out for roughly 1 minute beforegrabbing the sample for the manual analysis.
Do not calibrate.
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AMI HydrazineMaintenance
5. MaintenanceMaintenance frequency depends strongly on the water quality.
5.1 Maintenance Schedule
5.2 Stop Operation before Maintenance
Put on safety gloves and wear safety glasses!
Take off diisopropylamine bottle and close well. Screw an emptybottle on the holder. Let the sample run for 30 min.
Stop sample flow. Wait until rotor stops and hydrazine reading is0 ppb.
Shut off power of the instrument.
Empty the constant head by opening the grab sample tap.
5.3 Cleaning of Sample Supply/Filters
Depending on the water quality, the sample supply and its filter mayneed cleaning from time to time.
5.4 Cleaning of Protective Filter
If the protection filter shows deposits, proceed as follows:
Close flow regulating valve.
Stop the sample supply before the filter.
Screw out the filter vessel.
Screw out the filter (must be held at the top).
Backwash the filter under pressure of tap water. Clean theoutside of the filter.
Mount the filter and filter vessel again.
Open sample supply and flow regulating valve again.
Weekly Check sample supply for dirt.
Check sample flow.
Make manual measurement. If necessary, correct.
Monthly Exchange Diisopropylamine bottle if there is lessthan 150 ml (half of the diffusion tube has to be
covered with Diisopropylamine).
Yearly Exchange diffusion tubes
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AMI HydrazineMaintenance
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5.5 Maintenance of Hydrazine Sensor Important
Run-in Period After cleaning, the sensor is very sensitive. Do not correct thevalue! Let the instrument run in for at least 24 h!
Cleaning Shut down the instrument as
described in chapter Stop Operation beforeMaintenance, p. 30.
Take off the sensor cable and putit to the side to prevent
wetting it. Unscrew the two white knurled
fastening screws.
Attention:
The sensor will glide easily out of the cell. Do not let it drop to thefloor. Any mechanical damage will make it unfit for further use. Donot touch the platinum parts with your fingers or metallic objects.
Take the hydrazine sensor out of the flow cell.
There is always some water left in the sensor chamber. Whentaking off the hydrazine sensor, this water will pour down. Preventthe connector on the cable and on the sensor from getting wet.
Take off the rotor.
Clean the two orifices with a pipe cleaner or a toothpick.
Clean the rotor with a pipe cleaner. Wipe the sensor with a softtissue, mainly the platinum parts and the whole area which is incontact with water.
Rinse all parts thoroughly with clean water.
Put rotor on the sensor.
Mount sensor. Fasten screws hand-tight.
Connect sensor cable.
Open sample flow.
As soon as the rotor is turning, switch on power.
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AMI HydrazineMaintenance
5.6 Maintenance of Reference ElectrodeCleaning Shut down the instrument as described in chapter Stop Operation
before Maintenance, p. 30.
Disconnect the electrode from the cable
Loosen the fixing screw and pull out the electrode of the samplechamber.
Wipe sensor tip carefully with a soft tissue.
Grease and oily films only may cause problems: Clean the tipcautiously with alcohol using a soft tissue. Rinse with water.
Do not use acid! Remount the electrode into the sample chamber, push it down
till it stops and connect the electrode to the cable.
5.7 Changing Diisopropylamine Bottle
Shut down the instrument as described in Stop Operation beforeMaintenance, p. 30
Attention! Wear safety gloves and safety glasses! Please note
the warnings in the safety data sheet of Diisopropylamine! Donot inhale!
Put on safety gloves and safety glasses!
Fill roughly 750 ml high purity water into a 1 l beaker.
Screw off the almost empty Diisopropylamine bottle. Take outdiffusion tube. Close bottle immediately.
Dip the diffusion tube into the beaker (filled with high puritywater). Rinse some seconds. Take out.
Open new Diisopropylamine bottle, add 20 ml of high puritywater and insert diffusion tube. Fasten bottle to holder.
(If you fill up Diisopropylamine into the almost empty bottle, nohigh purity water needs to be added).
The liquid in the almost empty Diisopropylamine bottle must bedischarged as chemical waste.
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AMI HydrazineMaintenance
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5.8 Changing the Diffusion TubeShut down the instrument as described in chapter Stop Operationbefore Maintenance, p. 30.
Attention! Wear safety gloves and safety glasses! Please notethe warnings in the safety data sheet of Diisopropylamine! Donot inhale!
Put on safety gloves and wear safety glasses!
Fill roughly 750 ml high purity water into a 1 l beaker.
Screw off Diisopropylamine bottle. Take out diffusion tube.
Close bottle immediately. Dip the diffusion tube into the beaker filled with high purity
water. Rinse some seconds. Take out.
Take off the old diffusion tube.
Slide on the new diffusion tube.
Open Diisopropylamine bottle, insert diffusion tube, and fastenbottle to the holder.
The correct measuring value will appear after 30 min of continuousoperation (flow and power on). Diisopropylamine needs roughly30 min to penetrate the walls of the new diffusion tube.
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AMI HydrazineMaintenance
5.9 Maintenance of Flow CellFor technical details see the component drawing on the next page.
Attention!
Never use organic solvents or scrubbing materials to clean acrylicglass parts.Use soft detergent and rinse well.
Cleaning Shut down the instrument as described in section Stopoperation before maintenance.
Remove all sensors. See also drawing on the following page.
Put the rubber cap on the tip of the reference electrode andplug cap on sensor plug. For longer interruptions see LongerStop of Operation, p. 36.
Take off the protection filter, the tabs and the fittings. Do notallow water on the sensor plugs!
Loosen fastening screws, take off the cover of the constanthead, and take out all tubes. Remove also the the tubes,leading to the Diisopropylamine bottle.
The flow cell block must not be taken from the panel during
cleaning. All acrylic parts are cleaned with a soft brush (bottle cleaner)
using soapy water.
All gasket have to be replaced before reassembling the flowcell. A film of teflon paste (e.g. Fomblin from Solvay Solexis) onthe gaskets improves tightness and life time. Wrap teflon tapearound the threads of the sample inlet and outlet.
The tube, leading to the
diisoproplyamine bottle, is
pushed into the hole before the
small overflow tube. The tube
coming from the
diisopropylamine bottle is put
into the small overflow tube.
Bottle
holder
fromflow cell
toflow cell
into smaller over-
flow tube (closest
to stainless steel
panel
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AMI HydrazineMaintenance
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Component Drawing
cover
outer tube
smaller overflow tube
longer overflow tube
hydrazine sensor chamber
tap / outlet for
tap of sample inlet
sample
inlet
hydrazine sensor
rotor
filter
filter vessel
sampleoutlet
to diisoprop. bottle
temp. sensor
from diisoprop. bottle
flowsensor
fastening ref. electrode
grab sample
flow cell block
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AMI HydrazineMaintenance
5.9.1 Longer Stop of Operation
Do not switch the instrument off if your operation is suspended forless than a week. Power consumption is very low, and the sensorsremain ready for use.
Do not spill water on connectors! Ensure they remain dry!
Shut-down the instrument as decribed in chapter Stop Operationbefore Maintenance, p. 30.
Switch off power of all connected devices.
Remove filter vessel, empty, and remount.
Dismount the reference electrode, fill water in the rubber capand put the cap on the electrode tip to preserve it from dryingout! Disconnect from cable and put plug cap on the electrodeplug. Store in dry and frost protected place with tip pointingdownwards.
Remove cable from hydrazine sensor. Dismount sensor, dry itwith a soft, clean tissue, and store dry.
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AMI HydrazineCalibration
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6. Calibration
6.1 Calibration Procedure
ManualMeasurement
Hydrazine reacts with dimethylaminobenzaldehyde in an acidsolution and forms a yellow colour. The colour intensity isproportional to the concentration and can be determined by aphotometer. Refer to an appropriate standard method.
Correction The adjustment of the slope is called correction. The zero remains
unchanged. A calibration (changing slope and zero) is notnecessary. The zero point is very stable and no change is
necessary.
6.2 Hydrazine Sensor
ProcessCalibration
The sample must always overflow into the longer overflow tube ofthe constant head. Only perform process calibration if thedifference is significant.
Grab Sample Grab sample directly on the flow cell (grab sample valve and tap).Open the grab sample valve and let the water flow out for a minutebefore taking the sample.
Note the displayed value of the AMI Hydrazine while taking the grabsample. The reading has to be stable .
Determine the hydrazine concentration of the sample by manualanalysis.
Compare the result to the reading of the AMI.If the reading of the AMI has changed while performing the manual
analysis, enter the difference between the reading of the AMI.
For example:Displayed measurement value at AMI during grab sample: 10 ppbDisplayed measurement value at AMI after concentrationdetermination: 15 ppb.Determined hydrazine concentration: 8 ppbThere is a change of the measurement value of 50% during theconcentration determination. This means, you have to correct thedetermined hydrazine concentration also with a factor of 50%.This will result in a value of 8ppm+ (50% of 8 ppb) = 12ppb
Finally, you have to enter 12ppb as a process value at the AMItransmitter
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AMI HydrazineCalibration
During calibration, control is interrupted. The signal outputs arefrozen if hold after calibration has been programmed (menu4.3.4.2). Otherwise the outputs track the measuring value. Hold
after calibration is indicated by Hold in the display.
Enter Process Hydrazine
Current Value 18.8 ppbRaw value x n A
Save Process Value 24.0 ppb
3.1.2.5
3.1.2.5Process Hydrazine
Current Value 15.0 ppbRaw value x n A
Calibration successfulpress Enter
3.1.2.5Process Hydrazine
Current Value 18.8 ppbRaw value x n A
Process Value 24.0 ppb
Save
Enter
Process Hydrazine
Raw value x n A
Save Process Value 18.8 ppb
3.1.2.5Enter
Current Value 18.8 ppb
3.1
CalibrationSimulation
Maintenance
Set Time 01.01.05 16:30:00
3.1.2CalibrationEnter Zero Hydrazine
Process HydrazineCalibration
Enter correct value with
arrow keys.
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PossibleError
Message
Current value too low or no sample flow. Possible reasons:
For additional explanations see Trouble Shooting, p. 40 andError List, p. 41
ZeroHydrazine
A zero point calibration is NOT necessary.
If your quality procedure specifies a zero point calibration, pleaseproceed as described below:
During a zero calibration, the sample flow is turned off and theresidual hydrazine in the small water volume around the sensor isconsumed within 15-20min. 0 ppb remains and after 30min., a zerocalibration is done.
Let the instrument run continuously for AT LEAST 5 DAYS innormal operation before doing a zero point calibration!
Choose Menu 3.1.3. The instrument guides you through thecomplete calibration process. If you have completed the requiredaction press to proceed.
Close tap of the water inlet. Wait 30 min. (Timer counts down).
Current value / offset (Progress of zero cal. is shown). Wait untilfinished.
Open tap of the water inlet and regulate flow.
Sample
flow low
Low sample flow
resulting in no signal
difference to zero.
Check rpm on main display.
Process
value too
low
ppb-value is too low to
provide enough
current difference from
the calibrated zero
current.
Process value used for
calibration should be higher.
Check the diagnostic value
of the zero point.
Contami-
nated
sensor
Sensor does not pro-
vide enough current
for the value measured
with the manual analy-
sis.
Clean sensor. In case of
repeated sensor
contamination, check for
water treatment chemicals
such as phosphates.
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AMI HydrazineTrouble Shooting
7. Trouble ShootingThis chapter provides some hints to make trouble shooting easier.For any detailed information how to handle/clean parts please seeMaintenance, p. 30.For any detailed information how to program the instrument pleasesee Display, Keys, p. 14.
Attention: The sample for the manual analysis must be takendirectly from the flow cell!
If you need further help please contact your dealer. Note serial
number of instrument and all diagnostic values before.
7.1 Error messages
The menu 1 - Messages - reveals pending errors as well as themessage list with text, time and state of errors that have occuredbefore.
Error
Nonfatal error. The system continues to operate normally, except
for the defective part.
Fatal error (blinking symbol)
If used for control relay 1, 2 as well as the Signal Outputs aredeactivated, i. e. any control is interrupted. The indicated measuredvalues are incorrect. Depending on the error the system may stopoperating.
To solve the problem, please consult Error List, p. 41
If an error is corrected, by intervention or by the system itself, it islisted in the the Message List (Menu 1.2). The symboldisappears.
The last 64 messages are stored for viewing. They are deleted ifSET Default Values (Menu 5.4.2) is carried out.
1.1.5
Pending ErrorsError Code E010
Sample Flow low
to Acknowledge
Errors remain in the Pending
Errors window until corrected,even if acknowledged.
Acknowledging the error onlydeactivates the Alarm Relay, i.e.it switches off an alarm device ifavailable.
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AMI HydrazineTrouble Shooting
A-96.250.501 / 070606 41
7.2 Error ListE0xx (bold and red) are fatal errors.
Error Error text Corrective action
E001 Hydrazine Alarm high check process
E002 Hydrazine Alarm low check process
E007 Sample Temp. high check sample temperature
E008 Sample Temp. low check sample temperature
E009 Sample Flow high check sample inlet pressure,
check sample flow, check alarm
value in Installation/Relays/
Alarm relay/Sample
E010 Sample Flow low establish sample flow, check
sample inlet pressure, check
alarm value in Installation/
Relays/Alarm relay/Sample,clean instrument
E011 Temp. shorted check wiring of temperature sen-
sor, check temp. sensor
E012 Temp. disconnected check wiring of temperature sen-
sor, check temp. sensor
E013 Case Temp. high check environment temperature
E014 Case Temp. low check environment temperature
E015 Reference electrode Check conductivity value of
sample (must be > 5 μS/cm)
Check gain of hydrazine sensor.
If too small, clean hydrazine
sensor.
Exchange reference electrode.
E017 Control time-out check control device or program-
ming in Installation, Relay con-
tact, Relay 1/2
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AMI HydrazineTrouble Shooting
E024 Input active Information that the Input is
active (see programming Instal-
lation, Input, Fault “Yes”)
E025 IC MK41T56 call service
E026 IC LM75 call service
E027 IC PCF8574 call service
E028 EEProm Microcon call service
E029 EEProm Motherboard call service
E030 EEprom Front-End call service
E031 Calibration RecOut call service
E032 Wrong Front-End call service
E033 Power-on none, status message
E034 Power-down none, status message
Error Error text Corrective action
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AMI HydrazineProgramm Overview
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A. Programm Overview
Menu Messages may be protected by a password. Menu Diagnostics is always
accessible for everybody. No password protection. In both menus, no settings can be
modified.
Pending Errors 1.1*Messages Message List 1.2*(Main Menu 1)
Designation AMI Hydrazine 2.1.1*Version 3.81-04/07 2.1.2*
Instrument 2.1.3.1*Identification Factory Test Motherboard 2.1.3.2*2.1* 2.1.3* Frontend 2.1.3.3*
Years 2.1.4.1*Operating Time Days 2.1.4.2*2.1.4* Hours 2.1.4.3*
Minutes 2.1.4.4*Seconds 2.1.4.5*
Current Value 2.2.1.1*Raw Value 2.2.1.2*
Hydrazine Sensor Ref. Voltage 2.2.1.3*
Sensors 2.2.1* Cal. History 2.2.1.5*2.2*
Miscellaneous Case Temp. 2.2.2.1*Diagnostics 2.2.2*(Main Menu 2)
Sample ID 2.3.1*Temperature (°C) 2.3.2*
Sample Nt5k (Ohm) 2.3.3*2.3* Sample Flow (rpm) 2.3.4*
Raw Value (Hz) 2.3.5*
Alarm Relay 2.4.1*
Relay 1 2.4.2*I/O State Relay 2 2.4.3*2.4* Input 2.4.4*
Signal Output 1/2 2.4.5/2.4.6*
Interface Protocol 2.5.1*2.5* Device address/Baud rate 2.5.2* (depends on
Baud rate/ID No. 2.5.3* chosen protocol) Local operation/Parity 2.5.4*
* Menu numbers
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AMI HydrazineProgramm Overview
Menu Maintenance is for service: Calibration, simulation of outputs and set time/
date. Please protect with password.
Menu Operation is for the user , allowing to set limits, alarm values, etc. The
presetting is done in the menu Installation (only for the System engineer). Please
protect with password.
Calibration Zero Hydrazine 3.1.1*3.1* Process Hydrazine 3.1.2*
Alarm Relay 3.2.1*Maintenance Simulation Relay 1/2 3.2.2/3.2.3*(Main Menu 3) 3.2* Signal Output 1/2 3.2.4/3.2.5*
Set Time3.3*
Sensors Filter Time Const. 4.1.1*4.1* Hold after Cal. 4.1.2*
Alarm Relay Alarm Hydrazine 4.2.1.1*4.2.1*
Operation Relay Contacts Relay 1/2 Limit value depends on pre-(Main Menu 4) 4.2* 4.2.2/4.2.3* or setpoint setting in Menu 5:
or timer Installation
Input 4.2.4* depends on presetting in Menu 5: Installation
Logger Log Interval 4.3.1*4.3* Clear Logger 4.3.2*
* Menu numbers
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Menu Installation: Defining assignment of all inputs and outputs, measuring param-
eters, interface, passwords, etc. Menu for the system engineer. Password stronlgy
recommended
Sensors Temp. Compensation 5.1.1*5.1*
HydrazineParameter Temperature
Signal Output 1 5.2.X.1* Sample FlowSignal Outputs Signal Output 2 5.2* Signal Output 3 Current Loop (0/4 – 20 mA) 5.2.X.2*
(only with optional
3rd
Signal Output) Function 5.2.X.3*5.2.1-5.2.3*
Scal./Contr.par. (depends on chosen Function)5.2.X.4*
Alarm high
Alarm Hydrazine Alarm low 5.3.1.1* Hysteresis
Delay
Flow alarm
Alarm Relay Sample Flow Flow alarm high5.3.1* 5.3.1.2* Flow alarm low
Sample temp 5.3.1.3* Temp. highTemp. low
Case Temp. high 5.3.1.4*Installation Case Temp. low 5.3.1.5*(Main Menu 5)
Function 5.3.2.1*Relay Contacts Relay 1/2 Parameter 5.3.2.2*5.3* 5.3.2/5.3.3* Limit/Set contr./Timer (depends on chosen Function)
5.3.2.3*
Active 5.3.4.1*Input Signal Outputs 5.3.4.2*5.3.4* Output/Control 5.3.4.3*
Fault 5.3.4.4*Delay 5.3.4.5*
Language 5.4.1*Miscellaneous Set defaults 5.4.2*5.4* Load Firmware 5.4.3*
Password 5.4.4* (for Messages, Maint., Operation, Installation)Sample ID 5.4.5*
Interface Protocol 5.5.1* (only with optional additional board)
5.5* Device Address/Baud Rate 5.5.2*Baud Rate/ID No. 5.5.3* (depends on chosen protocol)
Local operation/Parity 5.5.4*
* Menu numbers
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B. Profibus (Option)
B.1. Introduction
The AMI family of transmitters provides a common base for anumber of analytical instruments with application specific sensorinterfaces. Each instrument has a basic structure with identicalfunctionality.
AMI instruments can (optionally) be equipped with a PROFIBUSDP-V1 interface. The interface supports the PROFIBUS-PA Profile3.0. This part of the manual describes the functionality of theinterface and the integration of the AMI family of transmitters intoan automation system.
Hardware Wiring, bus terminals and connectors are not part of this manual. It
should, however, be noted that the observation of the
corresponding standards is of paramount importance to proper
operation. Setting the transmission rate to reasonable values will
help avoid communication errors.
GSD file for AMI
Hydrazine
The PROFIBUS system requires a description of the device
parameters, e. g. output data, input data, data format, data volume
and supported transmission rate, so that it can integrate the field
devices into the bus system. These data are contained in a
Device Master File (GSD file) which is placed at the disposal of
the PROFIBUS master while communication system is
being commissioned.
Device bitmaps can also be integrated. These appear as icons inthe network tree.
The manufacturer-specific GSD file SW17C6.gsd is available for
download from http://www.swan.ch
http://www.swan.ch/http://www.swan.ch/http://www.swan.ch/
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B.2 Cyclic Data Telegram AMI Hydrazine makes the following modules available as input datafor the cyclic data exchange:
1 Main Process Value
2 Main Temperature
3 Main Flow
4 Control AMI
5 Diagnostic Values (5 values)
a Raw value in nA
b Counter Electrode Voltage in mV
c Offset in nA
d Slope in nA
e Case Temperature in °C
The input data is transferred from AMI Hydrazine in the followingstructure :
Table 1: Input data structure of AMI Hydrazine
Indexinputdata
Data AccessData format /comments
Configuration data
0 ... 4 Analog Input block 1Main Process Value
read Measured value (32-bitfloating point number)Status byte
0x42, 0x84, 0x08, 0x05 or0x42, 0x84, 0x81, 0x81 or0x94
5 ... 9 Analog Input block 2Main Temperature
read Measured value (32-bitfloating point number)Status byte
0x42, 0x84, 0x08, 0x05 or0x42, 0x84, 0x81, 0x81 or0x94
10 ... 14 Analog Input block 3
Main Flow
read Measured value (32-bit
floating point number)Status byte
0x42, 0x84, 0x08, 0x05 or
0x42, 0x84, 0x81, 0x81 or0x94
15 ... 34 Diagnostic Values read 5 Measured values (32-bit floating pointnumbers)
0x45, 0x93, 0x08, 0x08, 0x08,0x08, 0x08, 0xE9
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The output data is transferred to AMI Hydrazine in the following structure:
B.3 Customizing the Cyclic Data Telegram
You can customize the cyclic telegram to better meet the
requirements of a process. The tables above represent the
maximum contents of the cyclic data telegram. If you do not want to
use all the cyclic data of AMI Hydrazine, you can use the device
configuration (Chk_Cfg) to eliminate individual data blocks from the
cyclic telegram via the PLC software. Shortening the telegram
improves the data throughput rate of a PROFIBUS system. You
should only keep those blocks active which you process further inthe system. You can do this by means of a "negative" selection in
the configuration tool.
To achieve the correct structure of the cyclic data telegram, the
PROFIBUS master must send the identification FREE_PLACE
(00h) for the non-active blocks.
Indexoutputdata
Data AccessData format /
commentsConfiguration data
0 ... 1 Control AMI (SP_D) write Byte 0
Bit Description
0 Relay 10 = open1 = close
1 Relay 20 = open1 = close
2..7 Not used
Byte 1
Bit Description
0 Hold
1 Control Off
2..7 Not used
0x82, 0x81, 0x05, 0x05 or0x82, 0x81, 0x84, 0x82 or0xA1
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B.4 Data FormatsEach measured value has the same format: one four-byte (32-bit)
floating-point value in IEEE 754 Short Real Number format and a
status code byte referring to the measured value. There are four
quality states, 16 sub-status values (not all defined) for each quality
state, and four limit states for the measured value indicated in its
associated status byte (See Figures 2 ,3, 4 and 5).
Figure 2: Out Value + Status
Figure 3: IEEE 754 floating point number:
Formula: Value = (-1) sign * 2(exponent - 127) * (1 + mantissa)Example: 40 F0 00 00 h = 0100 0000 1111 0000 0000 0000 0000 0000 b
Value = (-1)0 * 2(129 - 127) * (1 + 2-1 + 2-2 + 2-3)= 1 * 22* (1 + 0.5 + 0.25 + 0.125)= 1 * 4 * 1.875= 7.5
Figure 4: Status Code Byte
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Analog values in IEEE 754 Format Status
Byte n Byte n+1 Byte n+2 Byte n+3Bit 7 Bit 6 Bit 0 Bit 7 Bit 6 Bit 0 Bit 7 Bit 0 Bit 7 Bit 0
Sign 27 2
6 2
5 2
4 2
3 2
2 2
12
02
–1 2
–2 2
–3 2
–4 2
–5 2
–6 2
–72
–8 2
–9 2
–10 2
–11 2
–12 2
–13 2
–14 2
–152
–16 2
–17 2
–18 2
–19 2
–20 2
–21 2
–22 2
–23
Exponent Mantissa Mantissa Mantissa
7 6 5 4 3 2 1 0
Quality Sub-status Limits Meaning
0 0 bad
0 1 uncertain
1 0 good
0 0 ok
0 1 low limited
1 0 high limited
The sub-status hasa different quality
depending on the coding
1 1 constant
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Figure 5: Status codes of the measured value
Figure 6: DP Diagnostics
Statuscode
Device status Meaning Limits
0x08 BAD Not connected (Temp Sensor notconnected)
0x0C BAD device failure
0x10 BAD sensor failure (Temp Sensor ShortCircuit)
0x47 UNCERTAIN last usable value (HOLD) CONST
0x50 UNCERTAIN sensor conversion not accurate (No
Flow)
OK
0x640x67
UNCERTAIN sensor calibrationsensor calibration, hold
OKCONST
0x80 GOOD ok OK
0x890x8A
GOOD Warning LowWarning High
LOW_LIMHIGH_LIM
0x8D0x8E
GOOD Alarm Low Alarm High
LOW_LIMHIGH_LIM
Byte Description
0 Status 11 Status 22 Status 33 Master address4 Ident number (high byte)5 Ident number (low byte)
Standard DP Diagnostics
6 Header (block length incl. Header byte) = 147 Status Type (0x81)8 Slot Number (0x00)9 Status Specifier
Status coding accordingto DP/V1
10 ..13 Diagnosis14 ..19 Diagnosis Extension
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The diagnosis object consists of 4 Bytes
Byte Bit Meaning when “1” Abbreviation
0 0 Hardware failure electronics DIA_HW_ELECTR
1 Hardware failure mechanics DIA_HW_MECH
2 -
3 Electronic temperature too high DIA_TEMP_ELECTR
4 -
5 Measurement failure DIA_MEASUREMENT
6 -
7 -
1 0 -
1 -
2 -
3 -
4 -
5 Maintenance required DIA_MAINTENANCE
6 -
7 -
2 0 -
1 -
2 -
3 -4 -
5 -
6 -
7 -
3 0 -
1 -
2 -
3 -
4 -
5 -
6 -
7 Extension Available EXTENSION_AVAILABLE
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The diagnosis extension object consists of 6 Bytes.
Bytes 4 and 5 are reserved for future extensions.
Byte Bit Meaning when “1”
0 0 Hyd. Alarm high -
1 Hyd. Alarm low -
2 - -
3 - -
4 - -
5 - -
6 Sample Temp. high DIA_MEASUREMENT
7 Sample Temp. low DIA_MEASUREMENT
1 0 Sample Flow high DIA_MEASUREMENT
1 Sample Flow low DIA_MEASUREMENT
2 Temp. shorted DIA_HW_ELECTR
3 Temp. disconnected DIA_HW_ELECTR
4 Case Temp. high DIA_TEMP_ELECTR
5 Case Temp. low DIA_TEMP_ELECTR
6 Counter Electrode Reference DIA_MEASUREMENT
7 -
2 0 Control Timeout -
1 - -
2 - -
3 - -
4 - -
5 - -
6 Cleaning Reagent DIA_MAINTENANCE
7 Input Active DIA_HW_ELECTR
3 0 IC MK41T56 DIA_HW_ELECTR
1 IC LM75 DIA_HW_ELECTR
2 IC PCF8574 DIA_HW_ELECTR
3 EEprom Microcon DIA_HW_ELECTR
4 EEprom Motherboard DIA_HW_ELECTR
5 EEprom Front-end DIA_HW_ELECTR
6 Cal. Recout DIA_HW_ELECTR
7 Wrong Front-end DIA_HW_ELECTR
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B.5. ConfigurationB.5.1 Device Master Files (GSD)
The device is ready for system integration once commissioning has
been effected via the local display or the Class 2 master. The
PROFIBUS system requires a description of the device
parameters, e.g. output data, input data, data format, data volume
and supported transmission rate, so that it can integrate the field
devices into the bus system. These data are contained in a Device
Master File (GSD file) which is placed at the disposal of thePROFIBUS master while the communication system is being
commissioned. Device bitmaps can also be integrated. These
appear as icons in the network tree.
The Profile 3.0 Device Master File (GSD) allows field devices from
various manufacturers to be exchanged without having to
reconfigure.
B.5.2 GSD File Types
Prior to configuration, decide which GSD you want to use tooperate the system.
You can change the setting by means of a Class 2 master (under
Physical Block-Parameter Ident_Number_Selector).
The following two Device Master Files with different functionalities
are available:
Manufacturer-specific GSD with Profile 3.0 functionality
(default setting):
This GSD guarantees the unlimited functionality of the fielddevice. Device-specific process parameters and functions are
therefore available.
Profile GSD's:
If a system is configured with profile GSD's, it is possible to
exchange devices that are supplied by various manufacturers. It
is, however, essential that the cyclic process values follow the
same sequence. The transmitter supports the profiles Analyzer
and Multivariable (IEC 61158-2). These GSD's comprise Analog
Input blocks (AI).
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GSD files for AMI Hydrazine:
Working with GSD files
The GSDs must be integrated into the automation system.
Depending on the software that is being used, the GSD files can becopied to the program-specific directory or can be read into thedatabase using the import function within the configurationsoftware.
B.6. Acyclic Data Communication
The AMI Series of analytical instruments is available for a widerange of parameters. Instrument configuration depends onconnected sensors and application. Therefore, configuration mustbe performed by trained personnel with a background inanalytical methods.
It should be noted that there is a clear distinction between
instruments that are configured and calibrated in an application(flow, level, pressure) and instruments that are calibrated with aknown standard (pH, chlorine). AMI instruments are of thesecond type.
To ensure reliability and consistency of the measurement, remoteconfiguration has not been enabled at this time.
Device name Ident_number_
Selector
ID number GSD Bitmaps
Manufacturer-specific GSD with Profile 3.0 functionality:
AMI Hydrazine 1 17C6Hex SW17C6.gsd SW17C6_D.bmpSW17C6_N.bmpSW17C6_D.bmp
Profile 3.0 GSD Analyzer:
AMI Hydrazine 0 9750 Hex PA139750.gsd PA_9750n.bmp
Profile 3.0 GSD Multivariable:
AMI Hydrazine 3 9760 Hex PA139760.gsd PA_9760n.bmp
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C. Modbus (Option)
C.1. Introduction
The AMI Hydrazine is a Microprocessor controlled electronic
transmitter & controller for the conductivity measurement in power
cycles. It can be operated as an intelligent Slave device on the
Modbus/JBUS using twisted pair RS485 lines.
Modbus/Jbus The Modbus / Jbus Protocol communicates using a master-slave
technique, in which only one device (the master) can initiatetransactions (queries). The other devices (the slaves) respond by
supplying the requested data to the master, or by taking the action
requested in the query. Typical master devices include host
processors, PLCs etc. Typical slaves can be PLCs or intelligent
transmitter/controller like the AMI family of the instruments.
The Query The function code in the query tells the addressed slave device
what kind of action to perform. The data bytes contain any
additional information the slave will need to function. For example,
function code 03 will query the slave to read holding registers andrespond with their contents. The data field must contain the
information telling the slave which register to start at and how many
registers to read.
TheResponse
If the slave makes a normal response, the function code in the
response is an echo of the function code in the query.
The data bytes contain the data collected by the slave.
Serial
TransmissionModes
Modbus supports two transmission modes: ASCII or RTU.
The AMI Instruments support Modbus RTU (Remote Terminal Unit)mode only.
RTU Mode In RTU mode, each 8-bit byte in a message contains two 4-bit
hexadecimal characters. The main advantage of this mode is that
its greater character density allows better data throughput than
ASCII for the same baud rate. Each message must be transmitted
in a continuous stream. Users select the desired serial port
communication parameters (baud rate, parity mode, etc). The serial
parameters must be the same for all devices on a Modbus network.
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Coding System
Eight bit binary
1 start bit
8 data bits, least significant bit sent first
1 bit for even / odd parity, no bit for no parity
1 stop bit if parity is used, 2 bits if no parity
Cyclic Redundancy Check (CRC)
RTU framing: messages start with a silent interval of at least 3 ½character times. A similar interval of at least 3 ½ character timesmarks the end of the message.
A typical message frame is shown below
StartSlave
AddressFunction Data CRC END
T1-T2-T3-T4 8 Bits 8 Bits n x 8 Bits 16 Bits T1-T2-T3-T4
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C.2. Data and Control FunctionsData Address Data Addresses in Modbus Messages
All data addresses in Modbus Messages are referenced to zero.The first occurrence of a data item is addressed as item numberzero. For example:
Holding Register 40001 is addressed as register 0000 in thedata address field of the message. The function code fieldalready specifies a holding register operation. Therefore the 4xreference is implicit.
FunctionCodes
Modbus Function CodesThe list below shows the function codes supported by the AMIInstruments. Codes are listed in decimal. Function codes notsupported return an exception response 02 to the master.
Table 1: Modbus function codes
Data Re-presentation
Data Representation
The process- and parameter data of the AMI Instruments arerepresented by float (IEEE 754), signed- or unsigned integervalues. Depending on the range of the value, float, integer8,unsigned8, integer16, unsigned16, integer32 or unsigned32representation is used.
Code Name Description02 Read Input Status Read Alarm & Status Bits
03 Read Holding Registers Read Parameter Data
04 Read Input Registers Read Process Data
05 Force Single Coil Set Relays, fake Keystrokes etc.16 Preset Multiple Registers Preset Parameter Data (SWAN Use only)
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Discrete Inputs
Alarm &Status bits are packed as one input per bit of the data field.
Definition: big-endian and little-endian
Big-endian and little-endian are terms that describe the order inwhich a sequence of bytes are stored in computer memory. Big-endian is an order in which the "big end" (most significant value inthe sequence) is stored first (at the lowest storage address). Little-endian is an order in which the "little end" (least significant value inthe sequence) is stored first. For example, in a big-endian
computer, the two bytes required for the hexadecimal number 4F52would be stored as 4F52 in storage. In a little-endian system, itwould be stored as 524F.
Attention: big-endian format is used !!!
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C.3. Function DescriptionInput Status Read Input Status (Alarm &Status Bits), Function 02
Up to 32 bits of Alarm are available as summarised in the tablebelow:
Table 2: Alarm and Status addresses
Addr. Type Description0 Alarm Hyd. Alarm high
1 Alarm Hyd. Alarm low
2 Alarm -
3 Alarm -4 Alarm -
5 Alarm -
6 Alarm Sample Temp. high
7 Alarm Sample Temp. low
8 Alarm Sample Flow high
9 Alarm Sample Flow low
10 Alarm Temp. shorted
11 Alarm Temp. disconnected
12 Alarm Case Temp. high
13 Alarm Case Temp. low
14 Alarm Reference15 Alarm -
16 Alarm Control Timeout
17 Alarm -
18 Alarm -
19 Alarm -
20 Alarm -
21 Alarm -
22 Alarm Cleaning Reagent
23 Alarm Input Active
24 Alarm IC MK41T56
25 Alarm IC LM7526 Alarm IC PCF8574
27 Alarm EEprom Microcon
28 Alarm EEprom Motherboard
29 Alarm EEprom Front-end
30 Alarm Cal. Recout
31 Alarm Wrong Front-end
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InputRegister
Read Input Registers (Process data): Function 04
The process data are made up of the measuring values of the AMIHydrazine.
Table 3: Input registers
Single CoilFunction
Force Single Coil: Function 05This function is used to set relays and reset the instrument. Relayscan only be forced if set to fieldbus function.
Table 4: single coil function
Read Holding Registers (Parameter data): Function 03
Read Parameter data (see Parameter Table). All objects of typeRecord are defined in the Manufacturer specific tables following theparameter table.
Note: The Address is used in a proprietary way to select thedesignated record.
see parameter table on the next page.
Byte-Offset
Data type Description Range ofphysical value
0 Float Hydrazine 0.. 1000 ppb
4 Float Temperature -30 … 120 ºC
8 Float Flow 0.. 600 rpm
12 Float Counter Electrode Voltage mV
16 Float Raw Hydrazine 0.. 100’000 nA20 Float Raw Temp. (NT5k) 150 …66’000
Ω
24 Float Raw Flow 0.. 100 Hz
28 Float Case Temperature -55... 125 ºC
32 Float Signal Output 1 0.. 20 mA
36 Float Signal Output 2 0.. 20 mA
40 INSTRUMENT_ STATUS
Instrument Display Status
Addr. Description OFF (0) ON (1)
0.. 1 Relay Contacts 1..2 open close
2 Hold no yes
3 Remote Off no yes
4 Channel Select Channel 0 Channel 1
15 Reset Instrument (like hardware reset) reset
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Table 5: parameter table
Specific Data Manufacturer-specific Data Types & Records
DATE_STAMP Format
Address Modbus Addr Parameter Object Type Data Type Description Acc.
2300 1151 Version Record FIRMWARE_REC Firmware Version r
2400 1201 Num_Evt Simple Unsigned16 Number of Event Records r
2402 1202 Num_Log Simple Unsigned16 Number of Log Records r
3000 1501 Cal_History Array Array of CAL_HIST_1[15] Cal. History 1 r
3001 1502 Cal_History Array Array of CAL_HIST_2[15] Cal. History 2 r
4000.. 4126 2001.. 2064 Event_Rec Record EVENT_REC Get Event Record64 Records max.
r
5000.. 8070 2501.. 4036 Log_Rec Record LOG_REC Get Logger Record
1536 Records max.
r
31.. 26 25..22 21..17 16..12 11.. 6 5.. 0
YYYYYY MMMM DDDDD HHHHH MMMMMM SSSSSS
Year0... 63
Month1... 12
Date1... 31
Hour0... 23
Minutes0... 59
Seconds0... 59
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Parameter Size Data Type Description Range
INSTRUMENT_STATUS 32 Record Instrument Display Status
Language 1 Unsigned8 Language Selection 0 = German1 = English2 = French3 = Spanish
RunMode 1 Unsigned8 Run Mode 0 = Run1 = Hold2 = Off3 = Grab
AlaMode 1 Unsigned8 Alarm Mode 0 = Off1 = on2 = Blinking
MaintMode 1 Unsigned8 Maintenance Mode 0 = Off1 = on2 = Blinking
RelMode1 1 Unsigned8 Relais 1 Display Mode 0 = None1 = Limit Hi On2 = Limit Hi Off3 = Limit Lo On4 = Limit Lo Off5 = Timer Off6 = Timer On7 = Percent Control8 = Valve9 = Bus
RelMode2 1 Unsigned8 Relais 2 Display Mode 0 = None
1 = Limit Hi On2 = Limit Hi Off3 = Limit Lo On4 = Limit Lo Off5 = Timer Off6 = Timer On7 = Percent Control8 = Valve9 = Bus
PercDos1 2 Unsigned16 Percent Dosage Relais 1 0.. 100 %
PercDos2 2 Unsigned16 Percent Dosage Relais 2 0.. 100 %
MaintValue 2 Unsigned16 Maintenance Value 0.. 100 %
AlarmsActive 4 Unsigned32 Alarms Pending AlarmsActive
AlarmsLatched 4 Unsigned32 Alarms no Acknowledged AlarmsLatched
AlarmsActiveE 4 Unsigned32 Extended Alarms Pending AlarmsActiveE
AlarmsLatchedE 4 Unsigned32 Extended Alarms not Acknowledged AlarmsLatchedE
TimeStamp 4 DATE_STAMP Current Time
end Record
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D. Programm List and Explanations
1 Messages
1.1 Pending ErrorsProvides the list of active errors with their status (active,acknowledged). If an active error is acknowledged, the alarm relayopens again. Cleared errors are moved to the Message list.
1.2 Message ListShows the error history: Error code, date and time of issue, andstatus (active, acknowledged, cleared).65 errors are memorized. Then the oldest error is cleared to savethe newest error (circular buffer).
2 DiagnosticsIn diagnostics mode, the values can only be viewed, not modified.
2.1 Identification
2.1.1 View the Designation of instrument: Always AMI Hydrazine
2.1.2 Version: Firmware of instrument, e.g. V4.00-05/07
2.1.4 Factory test of the instrument; date of mother board and front-endQC test
2.1.5 Operating time: years, days, hours, minutes, seconds
2.2 Sensors2.2.1 Hydrazine sensor
Current value: in ppbRaw value: Uncompensated current in nA.Ref. voltage: Applied voltage at the counter electrode (CE) in mV
2.2.1.5 Cal. history:
Review the diagnostic values of the last calibrations of thehydrazine sensor. Only for diagnostic purpose.Max. 65 data records are memorized.
2.2.5 MiscellaneousCase Temp.: Actual temperature in °C of electronics housing.
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2.3 Sample2.3.1 Sample ID
Sample ID: Review the programmed code. The code is defined bythe user to identify the sample point in the plant.
Sample TemperatureReview the actual temperature in °C and in Ohm.
Sample flowReview if sample flows (detection: rpm and raw value in Hz)
2.4 I/O State2.4.1- 2.4.2 Reveals the actual status of all in and outputs:
Alarm relay: Open or closedRelay 1 and Relay 2: Open or closedInput: Open or closedSignal output 1, 2 (and 3, if option is installed): Actual current in mA.
2.5 InterfaceOnly available if optional interface is installed.
Review programmed communication settings.
3 Maintenance
3.1 Calibration
3.1.1 Zero Hydrazine:
Zero calibration (0 ppb). See Zero Hydrazine, p. 39 for moredetails.
3.1.2 Process Hydrazine:
For a process calibration of the hydrazine sensor. Follow thecommands on the screen. Save the value with the key.
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3.2 Simulation3.2.1-3.2.6 Select relay or signal output to be tested with the key and
press the up/down key to change the value. After confirming thesetting with the Enter key, the value is simulated by the relay/signaloutput.
At the absence of any key activities, the instrument will switch backto normal mode after 20 min.
If you quit the menu, all simulated values will be reseted.
3.3 Set Time
To adjust date and time.
4 Operation
4.1 Sensors
4.1.1 Filter time constant:
Used to damp noisy signals. Constant definition: 99% ofmeasurement value change in a given time (t99)Range: 5-300 sec
4.1.2 Hold after cal: To allow the instrument to stabilize again after calibration. Duringcal. and hold time the signal outputs are frozen, alarms and limitsare not active.Range: 0 - 6000 sec
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AMI HydrazineProgramm List and Explanations
4.2 Relay Contacts4.2.1 Alarm Relay
The alarm relay is used as cumulative error indicator.Under normal operating conditions, the contact is open.The contact closes upon:
power loss
detection of system faults like defective sensors or electronicparts
high case temperature
process values out of programmed ranges
See chapter 5 for a complete list of parameters.
Program process value alarm levels here or in menu 5.3.1
4.2.1.1 Alarm Hydrazine
4.2.1.1.1 Alarm high: If the measured value rises above the alarm highvalue, the alarm relay closes and E001 is displayedin the message list. Range: 0-1000 ppb
4.2.1.1.28 Alarm low : If the measured value falls below the alarm lowvalue, the alarm relay closes and E002 is displayed
in the message list. Range: 0-1000 ppb
4.2.1.1.36 Hysteresis: Within the hysteresis range, the relay does not switch.This prevents damage of relais contacts when the measuredvalue fluctuates around the limit value.Range: 0-1000 ppb
4.2.1.1.46 Delay : During run time plus the delay time the signal and controloutputs are held in the operating mode.Range: 0-28800 sec
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