AMI Hydrazine

8/18/2019 AMI Hydrazine

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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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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

A-96.250.501 / 070606 5

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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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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A-96.250.501 / 070606 7

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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A-96.250.501 / 070606 9

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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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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A-96.250.501 / 070606 11

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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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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A-96.250.501 / 070606 13

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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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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A-96.250.501 / 070606 15

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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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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A-96.250.501 / 070606 17

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


Current loop 0-20 mAParameter Hydrazine

Function linNo

Save ?

Yes


Function lin

Parameter Hydrazine

Current loop 4-20 mA


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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A-96.250.501 / 070606 19

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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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.


23/84


A-96.250.501 / 070606 21

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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22 A-96.250.501 / 070606


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.


25/84


A-96.250.501 / 070606 23

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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24 A-96.250.501 / 070606


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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A-96.250.501 / 070606 25

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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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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A-96.250.501 / 070606 27

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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28 A-96.250.501 / 070606


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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30 A-96.250.501 / 070606

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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A-96.250.501 / 070606 31

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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32 A-96.250.501 / 070606


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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A-96.250.501 / 070606 33

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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34 A-96.250.501 / 070606


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


37/84


A-96.250.501 / 070606 35

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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36 A-96.250.501 / 070606


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.


39/84

AMI HydrazineCalibration

A-96.250.501 / 070606 37

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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38 A-96.250.501 / 070606


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


Calibration successfulpress Enter

3.1.2.5Process Hydrazine


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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A-96.250.501 / 070606 39

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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40 A-96.250.501 / 070606

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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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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42 A-96.250.501 / 070606


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


45/84

AMI HydrazineProgramm Overview

A-96.250.501 / 070606 43

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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44 A-96.250.501 / 070606


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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A-96.250.501 / 070606 45

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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46 A-96.250.501 / 070606

AMI HydrazineProfibus (Option)

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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A-96.250.501 / 070606 47

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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AMI HydrazineProgramm List and Explanations

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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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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

AMI Hydrazine

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