aquacon smartpro 8967p

FORBES MARSHALL PVT LTD

Aquacon SMARTPro 8967P

HART© Smart 2-Wire Conductivity Transmitter

Instruction ManualCENG:IM:CONDP:0906:000:00

Software ReleaseV2.1.X

Copyright©2009All rights reservedForbes Marshall group of companies

SMARTPro 8967P Preface


This manual serves to explain the use and operation of AquaconSMARTPro instruments. The manual is a step-wise guide to help the

user operate the instrument and also is a reference guide forpreliminary trouble shooting.

This instruction manual is written to cover as many anticipatedapplications of the SMARTPro as possible. If you have any doubts

concerning the use of the instrument, please do not hesitate tocontact the nearest office of Forbes Marshall Pvt. Ltd.

The information presented in this manual is subject to change withoutnotice as improvements are made, and does not represent anycommitment whatsoever on the part of Forbes Marshall Pvt. Ltd.

Forbes Marshall Pvt. Ltd. cannot accept any responsibility for damageor malfunction of the unit resulting due to an improper use of theinstrument

Copyright©2009All rights reservedForbes Marshall group of companies

The phrases Aquacon SMARTPro 8967PSMARTPro 8967PSMARTPro

Are used interchangeably in this manual and point to the sameinstrument Aquacon SMARTPro 8967P

1.0 Introduction

Installation

Sensor wiring

SMARTPro 8967P Index

2.0


Preface 2Index 3-4Safety Information 5-6

1.1 General description 71.2 Specifications 8-10

Dimensional details 11Display 12

1.3 Operating Principle 13-14

2.1 Unpacking and Inspection 152.2 Tools required for installation 162.3 Location and Mounting 17-19

Panel Cutout 18Mounting clamps 19

2.4 Cabling 202.5 Power Supply requirements 202.6 Power Supply and Sensor wiring locations 212.7 Power supply wiring 22-242.8 Power supply wiring precautions 25

Earthing 26

3.1 Sensor wiring 273.2 Sensor cable 283.3 Temperature sensor 293.4 Terminations 303.5 Cable terminals 303.6 Cable terminations on board I- FM83XX 313.7 Cable terminations on board II- FMHT01 323.8 Cable terminations on board III- CS40/52 333.9 Calibration and Commissioning 34

3.0

I Conductivity of various aqueous solutions 83II Temperature in ºC versus resistance in ohms 84III Cell constant and Measurement Range 85IV Cable length and range of measurement 86V Temperature dependency of conductivity 87

7.0 Trouble Shooting 76-777.1 Causes and solution to problems 787.2 Problem in temperature measurement and

calibration79

7.3 Conductivity reading not matching with labreading

80

7.4 Is the transmitter working OK (Cond. input) 817.5 Is the transmitter working OK (Temp Input) 82

6.1 Probe care and Maintenance 736.2 How to store the electrode for long time 736.3 Storage after use in process 736.4 How to clean the electrode 746.5 Do’s and Don’ts for conductivity electrodes 75

5.1 HART© communication configurations 705.2 HART© Communication 71-72

Index 35-36How to use Conductivity meter as TDS meter? 69

4.0 Operation

5.0 HART ©Communication

6.0 Maintenance

7.0 Trouble Shooting

Annexure

SMARTPro 8967P Index


InformationSMARTPro 8967P Safety


The Forbes Marshall SMARTPro transmitter shall be installed and

operated only in a manner, only as specified in the InstructionManual. Only skilled, Trained and authorized person should carry outinstallation, set up and operation of the transmitter.

Before powering up the unit, make sure that power source it isconnected to, and the polarity of the source is as specified on thetransmitter. Failure to do so may result in permanent damage to thetransmitter.

InformationSMARTPro 8967P Safety


Thank you for purchasing the SMARTPro Transmitter. To maximize

the benefits of this instrument we request you to read this manualthoroughly before installing.

The instruction manual identifies safety instructions andadditional information by means of the following symbols:

This symbol draws attention to safety instructions andwarning of potential danger which, if neglected, couldresult in injury to persons and /or damage the property and /ordamage to the instrument itself.

This symbol identifies additional information andinstructions which, if neglected, could lead to inefficientoperation and possible loss of production

This symbol identifies the information which is necessary forthe trouble free operation of the instrument

Please store the instruction manual at such a place where it is easilyavailable to the persons working on SMARTPro

If you have any query please do not hesitate to contact nearest officeof Forbes Marshall Pvt Ltd, our engineer will be glad to assist you.

Section 1.0

SMARTPro 8967P Introduction


1.1 General Description

The SMARTPro 8967P is

HART© compatibleMicrocontroller based two wiretransmitter. It accepts inputsfrom Conductivity sensor andtransmits it in terms of4-20mA HART© output.

This transmitter is capable ofmeasuring Conductivity andtemperature. Thus Conductivitysensor in combination withinbuilt temperature sensor isused for measurement. Themeasurement results aredisplayed on LCD display.

For Conductivity, automatictemperature compensation throughPT100/PT1000 sensor is provided

The output of this transmitter isfully scalable over the total rangeof sensor. During fault conditionsthe output can be programmed for3.55mA or 22mA as per need.

All dimensions are in mm

96

96

121

FRONT VIEW

170

SIDE VIEW

140.4140.420.7

91

Section 1.0



1.2 Specifications

Accuracy

Outputs

©

Inputs

Product Specifications

Supply

Type 2 wireSupply voltage 12-36VDCLoad Resistance 600Ω @24VDC NOTE1

Display Temperature 0.5% of Full Scale

Display Conductivity 0.5% of Full Scale

Output Current 0.1mA

Current 4-20mA HART1.linear 2.Bilinear 3.Log

Display 2 Line 10 Character perline LCD

Primary Sensors ConductivitySecondary sensors PT100/PT1000Data Input 3 Button Keypad

±

±

±

Section 1.0



RangesNOTE4

Conductivity Auto switching range

Range1 0.005 µS/cm 0.05 mS/cm





Temperature -20ºC to +200ºC

SpansNOTE4

Conductivity Minimum 5% of selected rangeCompensationTemperature Auto/ManualRange -20ºC to 200ºCCalibrationConductivity Single point

Notes

1.Load Calculation Method:Load(in Ω)

=(Supply Voltage-12V)/0.02For 30V

supply Load isLoad=(30V-12V)/0.02 =900Ω

Also refer section 2.5 for power supply requirements

Section 1.0



1.2 Specifications

Product Specifications

Approvals

Enclosure

Operating Conditions

ImmunityNOTE5 EN61000-6-2EmissionNOTE5 EN61000-6-4

Material MS Powder coatedProtection Front IP54 , Other IP20

Temperature -20 to 60ºCRelative Humidity 0 to 90%

(non condensing)

Notes

5.EMC directive 2004/108/EEC

4. Display Auto ranging 0.01 µS/cm to 0.1 mS/cm for K=0.01,Current output is user defined

To elaborate the point ,User can set the current output range as

1 µS/cm = 4mA and 10 µS/cm =20mASo the current output will saturate and will show 20mA forall the values above 10 µS/cm

The display will continue to show readings above 10 µS/cm andbelow 1 µS/cm without any error

Section 1.0



1.2 Specifications

Dimensional details

All dimensions are in mm

96

96

121

FRONT VIEW

170

SIDE VIEW

140.4140.420.7

91

106

REAR VIEW

Section 1.0



1.2 Specifications

Display

Section 1.0



1.3 Operating Principle

The SMARTPro 8967P is a two wire transmitter with nominalworking voltage of 24VDC. In two wire configuration thetransmitter draws power from the loop itself.

The transmitter draws current of 4-20mA from supply. Thiscurrent is proportional to the measured variable.

The measuring cell is powered by a sinusoidal voltage of knownamplitude. The frequency of this excitation signal can beselected as either 70Hz or 1100Hz by a jumper setting on CPUcard. This signal is delivered by an oscillator of low outputimpedance to minimize cable capacitance effect. The amplifierconverts the current going through the probe in voltage bymeans of detector circuit, which eliminates the effect ofexternal interferences and capacities.

A special ADC digitizes the analog voltage, suppresses the noiseon the signal and gives accurate conductivity and temperaturemeasurements. The digital data is further processed by adedicated Microcontroller. The Microcontroller further processesthe data, displays the results on LCD display and generatesretransmission current output with HART© protocol.

The Microcontroller accepts the inputs from keyboard duringprogramming and calibration. The application specificparameters such as measuring range, temperaturecompensation are user programmable through keyboard.

Section 1.0



Block Diagram

70 Hz/1KHz

Matching

Oscillator

Impedence

I+ with HART

Galvanic

Isolation

LCD Display

Microcontroller +Opto Coupler

OpticalTransmitter

OpticalReceiver

Power Supply

-3.3V

0V

+3.3V

output Signal4.20 mA

A/D ConverterKeyboard

Autorange

0V

4.5V

Preamplifier

EEPROM

I- with HART

Temperature

sensor

Section 2.0

SMARTPro 8967P Installation


2.1 Unpacking and Inspection

Inspect the shipping carton forany damages. If there are novisual damages open the carton.

Check all the items as per packinglist. If any of the items aremissing please inform the same toForbes Marshall localrepresentative.

If it is damaged then, inform thedamages to the transporter forfurther action. It is recommendedto take photographs in case of anyinsurance claims.

The packing list is as below

1. SMARTPro 8967P -1No

2. Instruction Manual -1No

3. Panel Mounting Clamps-2No

4.Sensor connector – 1No(Plugged to transmitter)

5.Power Supply connector-1No(Plugged to transmitter)

Section 2.0



2.2 Tools required for installation

NOTE1 To be arranged by the purchaser

1.Multimeter 3 ½ digit

2.Conductivity standard solutionNOTE1

for sensor calibration

3.Screw Driver with blade width 3mm

4.Screw Driver with blade width 8mm

5.Calibrated reference thermometer

Section 2.0



2.3 Location and Mounting

For best results install the transmitter in area wheretemperature extremes, vibrations, electromagnetic andRadio frequency interference are at its minimum.

Mount the transmitter on the totally enclosed panel. Thepanel should protect the transmitter from dust and water.The instrument housing is rated for IP20 class of Ingressprotection only.

With help of the panel clamps provided, mount thetransmitter on control panel.

Section 2.0



2.3 Location and Mounting – Panel cutout

All dimensions are in mm (Inch)

92 + 0.5 (3.62 + .02)

92

+0.5

(3.6

2+

.02)

Panel cut out

Section 2.0


All dimensions are in mm (Inch)

68

(2.6

8)

22

.6(0

.89)

91

(3.6

0)

Max. 140 (5.50)Max. 21 (0.82)

Max. 170 (6.70)

PANEL

2.3 Location and Mounting – Mounting Clamps


Section 2.0



2.4 Cabling

Supply cable wires should be clearly marked/color codedfor +24V and ground to avoid polarity reversal

If conduit is used, ensure the conduit end is properlyterminated on transmitter side.

The cable used for 24V DC supply to transmitter shouldbe routed properly

The supply cable should be routed away from the powercabling.

Use proper size of lug suitable for 0.5 to 1 sq mm wirewith length of 6-8 mm for terminations on transmitterside.

The SMARTPro 8967P works on wide range of supplyvoltage from 12VDC to 36VDC.

The supply voltage at the transmitter input terminalsmust be at least 12VDC.

The power supply should be capable of taking the loads(minimum 250 Ohms for HART©) and the cableresistance.

For HART© communication the minimum load resistanceof 250 Ohms is a must. To supply 12VDC at Transmitterend the power supply voltage must be at least 17.5VDC

The power supply should be capable of supplying thesurge current at start up.

2.5 Power Supply requirements

Section 2.0



2.6 POWER SUPPLY AND SENSOR WITRING LOCATIONS

-IO

UT

SENSOR CONNECTIONS

12-36 VDC

REAR VIEW

SMARTProWIRINGLOCATIONS

E

1 32

+

EARTHING

POWER SUPPLY

....

REAR VIEW

Section 2.0



2.7 Power Supply wiring

Access the connectors for wiring of power supply as shownon page 21

Use 2 core cable. Terminate the wires at power supply side.

Measure the supply at the transmitter side with the help ofmultimeter. It should be within 12VDC to 36VDC.(Refer section 2.5 for more details)

Mark, color code, Ferrule the wires with +ve and ground.

Switch OFF the supply before connecting it to transmitter.

Route the cable through conduit to avoid mechanicaldamages to cable.

2.7 Power Supply wiring…contd..

Section 2.0



Connect the power supply wire +ve to Terminal 1 (T1) andground to Terminal 2 (T2) as shown.

Type I- Common power supply for group of transmitters

WHERE COMMON POWER SUPPLY IS USED FOR MULTIPLE CHANNELS

2 CORE X 0.5 SQ MM CABLE

2

POWER SUPPLY WIRING

CHANNEL 2

CHANNEL 3

1

+

SMARTPro

CONNECT "SUPPLY GROUND" TO EARTH AT POWER SUPPLY END

+

PLC

E

24VDC

-IO

UT

SMARTPro

POWER SUPPLYVOLTAGE

REAR VIEW

....

CHANNEL 1

-

CHANNEL 7

CHANNEL

12-36VDC

Switch ON the power Supply. Measure the voltage across T1with T2 as ground. It should be 12VDC to 36 VDC.

The display on transmitter turns ON.Switch OFF the supply. Now proceed for sensor wiring.

Section 2.0


2.7Power Supply wiring… contd..


Connect the power supply wire +ve to Terminal 1 (T1) andground to Terminal 2 (T2) as shown.

Type II- Dedicated power supply for SMARTPro

....

E

SMARTPro

+

BACK SIDE VIEW

+

1

DEDICATED POWER SUPPLY

-

-IO

UT

2

SUPPLYVOLTAGE

2 CORE X 0.5 SQ MM CABLE

12-36VDC

CONNECT "SUPPLY GROUND" TO EARTHAT TRANSMITTER END

POWER SUPPLY WIRING

12-36VDC @ 100mA

SMARTPro

Switch ON the power Supply. Measure the voltage across T1with T2 as ground. It should be 12VDC to 36 VDC.

The display on transmitter turns ON.Switch OFF the supply. Now proceed for sensor wiring.

Please follow the transmitter grounding guidelines as shownin the diagram

1. Use 2 core 0.5 sq mm wire.

2. Earth the power supply ground as per application.

3. Do not run signal wire nearby high voltage wire.

4. Use separate cable trays and conduits for signal andpower cables.

5. Keep power supply and signals wire at least 2meter awayfrom motor cable, VFD cables and heavy electrical cables.

Section 2.0



2.8 Power Supply wiring precautions

2.8 Power Supply wiring precautions - Earthing

Section 2.0



1

2. DO THE POWER SUPPLY EARTHINGAS PER TYPE 1 AND TYPE2

REAR VIEW

EARTHWIRE

EARTHINGPOWER SUPPLY WIRING PRECAUTIONS

1. CONNECT THE "TRANSMITTER" EARTHTO THE "PIPE LINE/FLOW THRU CHAMBER"ON WHICH THE SENSOR IS MOUNTED

+

SENSOR

PIPE LINEFLOW THRU CHAMBER

PROCESSFLOW

-IO

UT

TO ENSURE STABLE AND CORRECT READINGS

SMARTPro

....

12-36VDC

E

2

3.1 Sensor Wiring

Section 3.0

SMARTPro 8967P Sensor Wiring


The model SMARTPro 8967P is configured at factory to work with

standard Forbes Marshall Conductivity sensors. The sensor wiring forthe same is as below.

In most of the cases the conductivity sensors are provided as part ofa routine conductivity measuring system.

Sr No Sensor Model Cell Constant (cm-1) Inbuilt Temp Sensor

1 FM 8310 0.01 PT 100

2 FM 8311 0.1 PT 100

3 FM 8312 1.0 PT 100

The cells contain male connector as part of the cell body. Hence thesecells are provided with a cable having mating female connector at oneend. The other end of the cells contains wires to be connected totransmitter.

Some other models for which wiring diagrams are given are

Sr No Sensor Model Cell Constant (cm-1) Inbuilt Temp Sensor

1 FMEC01S 0.1 PT 100

2 FMHT01S 0.1 PT 100

3 CS52 10 PT 100

4 CS40 XX PT 100

If you are using any other make of sensor, please refer it’ssensor manual.


Section 3.0


3.2 Sensor cable

BLUE

BLACK WHITERED

3.3 Temperature sensor (2 wire PT100)

Section 3.0



Not applicable if you are using inbuilt temperature sensors

It necessary to use temperature sensor for the auto temperaturecorrection of the conductivity values. SMARTPro 8967P acceptsthe input from RTD sensor. The typical cable for the RTD is shownbelow.

T2

CONDUCTOR2

LUG

CONDUCTOR1RTD 2 CORE CABLE

SHEATH

T1

Temperature sensor is used as temperature input duringconductivity sensor calibration with buffer.

Put this temperature sensor in buffer solution whilecalibrating the conductivity electrode.

3.4 Terminations

8

3.5 Cable terminals

Use lugs suitable for 0.5-1mm wire and length 6-8mm

Section 3.0



Access the terminal blocks on back side of transmitter for sensorconnection. Route the sensor cable properly away from highvoltage lines.

Clamp the cable with “cable ties” etc. to avoid direct weight ofcable on the connector terminals.

1.Connect the “WHITE” wire to the transmitter terminalmarked as CONDT_1

2. Connect the “RED” wire to the transmitter terminalmarked as CONDT_2

3.Connect the “BLACK” wire to the transmitter terminalmarked as PT_1

4.Connect the “BLUE” wire to the transmitter terminalmarked as PT_2

Mandatory to calibrate every time you change the sensor

3.6 Cable termination on Board I - FM83XX

Section 3.0



3.7 Cable termination on Board II-FMEC01S/FMHT01S

Section 3.0



3.8 Cable termination on Board III- CS40/CS52

Section 3.0




SMARTPro 8967P

We have mounted and wired up the transmitter.

Now we are ready to calibrate the sensor.

Power ON the transmitter

Calibrate the temperature sensor with standard thermometer.Refer section 4.0, Menu 3.5.4 for calibration process.

Calibrate the sensor with the help of buffer solution.Refer section 4.0, Menu 3.6.2 to set cell constantRefer section 4.0, Menu 3.6.1 for calibration process.

Check and set transmitter range as required by the process.Refer section 4.0 Range setting.

Mount the sensor carefully in the process pipe, flow throughchamber or tank as per the requirement.

Transmitter + Sensor combination is ready for use.

Section 3.0

Sensor Wiring

3.9 Calibration and commissioning.

Section 4.0

SMARTPro 8967P Operation


SMARTPro series of transmitters allows the user to set different

parameters. The user menu available is as follows

NO MENU DESCRIPTION DEFAULT

1.1.1 MEAS. UNIT1 To change the conductivity unit µS/cm

1.1.2 TEMP UNIT To change the temperature units ºC

1.1.4 TIMECON To set the time constant 1.00

1.1.5 CYCLE DISP To set cyclic display ON OFF

1.2.3 Not applicable

1.2.6 ERROR MSG. To set error messages ON ON

1.3.2 FORCE OP I To Enable current output ON

1.3.3 RANGE I To set the current output range 4-20mA


2.1.1 TEST DISP. To test the display OFF

2.1.2 TEST I To test the Loop current OFF

2.1.3 Not applicable

2.1.4 DAT. RESIS. To check the sensor resistanceafter sensor calibration.

*

1 To select CONT.UNIT/ RESIS. UNIT/ TDS UNIT

Section 4.0




3.1.1 CONDT MA To set the range for 4-20mAoutput as per Conductivity value

*

3.2.2 CODE1 To set user menu password OFF

3.2.4 LOCATION To set the location of transmitter 00

3.2.7 POLL ADDR. To set the polling address ofTransmitter

00

3.5.4 T SEN CALB To calibrate temperature sensor *

3.6.1 SENS CALB TO calibrate the sensor *

3.6.2 CELL CONST To enter cell constant *

3.6.3 TEMP COMP To select temp compensation LINEAR

4.1.1 EXIT To EXIT form menu -

4.1.2 FCT CNFG To set factory default -

* To be done during installation

To go to user menus 1.1.1 to 3.6.3 press up arrow key ondisplay keyboard. Use combination of Up key, Right Key andEnter key to move through the menus.

Refer display diagram in section 1.2 of this manual to see thekey layout.

Section 4.0



NO MENU DESCRIPTION DEFAULT1.1.1 CONDT

UNITTo change the Conductivity unit µS/cm

1.1.1

CONDT UNIT

DISPLAYS CURRENT IN mA

DISPLAYS TDS VALUE

DISPLAYS IN Mohm-cm

MAMP

TDS VALUE

M.OHM CM

DISPLAYS in kohm-cm

DISPLAYS in ohm-cm

DISPLAYS IN ms/cm

DISPLAYS IN ms/cm

TDS VALUEK.OHM CMMS/CMXXXXXXXXX

MAMP

UNIT

TDS VALUE

UNIT

M. OHM CM

UNIT

K. OHMCM

UNIT

OHM CM

UNIT

MS/CM

UNIT

SPECIAL

kOHM CM

OHM CMMS/CM

US/CM

CA

BA

C

B

A

DISP. ON

XXXXXXXX

00001.0000

A1 COEFF. A1 COEFF.

00000.5000

XS

UNIT

SAVE PARM.

YES UNIT

US/CM

SPECIAL

UNITCONT. YES

MENU

MAMP

UNITUNITUNIT UNIT

M.OHM CMOHM CM

UNITUNITUNIT

UNIT

SAVE PARM.

NO

MENU

CONT. NO

UNIT

US/CM

US/CM

UNIT

CONDT UNIT

1.1.1

FLOW CHART FOR DISPLAY UNIT SELECTION

Section 4.0




UNITContinued µS/cm

This menu is used to set the measuring unit. We can select theunits µS/cm, ms/cm, mA, Kohm-cm, Mohm-cm, ohm-cm andSpecial.

It is necessary to save the parameters after the selection.The special unit is very rarely used. We can select thecoefficient and display the value in user defined units

µS/cmms/cm

CONT UNIT- Conductivity UnitDisplays the measured value in terms ofmicro Siemens/centimetermili Siemens/centimeter

Ohm- cmKohm-cmMohm-cm

RESIS.UNIT-Resistivity unitDisplays the measured value in terms ofOhm-cmKilo-ohm-cmMega-ohm-cm

pptppm

TDS UNIT- TDS unit selectionDisplays the measured value in terms ofParts per thousandsParts per million

Section 4.0




UNITContinued µS/cm

mA Displays the measured value in terms of mili Amps.

The value shown depends on the mA range set bythe menu 3.1.1 CONDT MA

This is the actual loop current flowing through theTransmitter

Special Displays the measured value in user defined units.User can apply the coefficient if required

If coefficient of 0.5 is applied the measured value ismultiplied by the factor of 0.5

Section 4.0



NO MENU DESCRIPTION DEFAULT1.1.2 TEMP

UNITTo change the Temperature unit ºC

C D B

DISP.ON

UNITUNITUNITUNIT

AUTOMANNUAL

TEMP UNIT

SEE NEXT PAGE

NO DISPLAY ON SCREEN

DISPLAYS ON SCREEN

OFF

ONMANUAL

DISPLAYS IN SPCIAL UNITDISPLAYS IN KELVINDISPLAYS IN DEG FARANHITEDISPLAYS IN DEG CENTIGRADE

SPECIALKELVINDEG. FDEG. C

GETS THE INPUT FROM THE TEMP SENSOR

USER SET TEMPERATURE INPUT

AUTO

MANUAL

AUTO

DISP. OFFDEG.CDEG.C

SPECIALKELVINDEG. FDEG C

1.1.21.1.2

1.1.2

FLOW CHART FOR TEMPERATURE UNIT SELECTION

B

A


Section 4.0


NO MENU DESCRIPTION DEFAULT1.1.2 TEMP

UNITContinued ºC

AC D

CCONDT UNIT

C A

B

UNIT0000025.00DEG.. C

AUTO

MENUCONT. NO

MENUCONT. YES

SPECIAL

DEG. C UNIT XEG. C UNIT

SAVE PARM.NO

SAVE PARM.YES

1.1.1

00001.0000

AO OFFSET

00000.5000AO OFFSET

XXXXXXXX

DISP. ON

MANUAL

This menu is used to set the temperature unit. We can set thetemperature value input to either manual or auto mode.

In auto mode the temperature input is taken from thetemperature sensor and is displayed on the screen. Thistemperature is used for temperature compensation.

In manual mode user feeds the temperature and sametemperature is used for temperature compensation.


Section 4.0


NO MENU DESCRIPTION DEFAULT1.1.4 TIMECON To Set the Time constant 2.00

fluctuations on display.Increase if you observe abnormal

time to process inputsIt decides instrument response

Low pass filter time constant in sec.

FLOW CHART FOR TIME CONSTANT SELECTION

1.1.4TIME CONST

02.0000000SEC

12.0000000SEC

MENUCONT. NO

MENUCONT. YES

A

A

SAVE PARM.NO

SAVE PARM.YES

1.1.1CONDT UNIT

Set the counts with up and

right key to shift decimalpoint --Take the cursor to decimalpoint and then use up key


Section 4.0


NO MENU DESCRIPTION DEFAULT1.1.4 TIMECON Continued 2.00

Enter a low pass filter value in seconds to be applied to processinput. A value of zero indicates that the low pass filter isbypassed.

With this variable, it is possible to achieve balance between asteady indication (on display and current output) and theresponse time (process changes).

It is factory set to 2.0.You may increase it if you observeabnormal fluctuations on display.

Section 4.0



NO MENU DESCRIPTION DEFAULT1.1.5 CYCLE

DISPTo Set cyclic display ON NO

FLOW CHART FOR CYCLIC DISPLAY SELECTION

1.1.5

CYCLIC DISPA

IF "YES" THE DISPLAY

SHOWS "CONDUCTIVITY

VALUE" AND

"TEMPERATURE"

A

CYCLIC DISPNO

CYCLIC DISPYES

MENU

CONT. NO

MENU

CONT. YES

SAVE PARM.NO

SAVE PARM.YES

UNIT COMES TO

NORMAL MODE

1.1.1

CONDT UNIT

ALTERNATELY

Section 4.0



NO MENU DESCRIPTION DEFAULT1.1.5 CYCLE

DISPTo Set cyclic display ON NO

If we select YES,

It means display will cycle automatically. This means ameasured parameter is shown in the selected units for about 6seconds and then the next parameter is shown for 6 secondsand so on.

If NO,

It means display shows last selected measured parameter.To toggle from one parameter to other press Up arrow key.

Section 4.0



NO MENU DESCRIPTION DEFAULT1.2.6 ERROR

MSG.To set the error messages ON YES

AERROR MSG.

1.2.6

FLOW CHART FOR ERROR MESSAGES SELECTION

MODE

NORMAL MEASURING

MESSAGES DURING

DISPLAYS ERROR

A

ERROR MSG

NO NO

ERROR MSG

MENU

CONT. YESCONT. NO

MENU

UNIT COMES TO

NORMAL MODE CONDT MODE

1.1.1

SAVE PARM.

YESNO

SAVE PARM.

Choose YES so that the error messages are displayed in measurementmode

If NO then no error messages are displayed ,even in errorconditions

Section 4.0



NO MENU DESCRIPTION DEFAULT1.3.2 FORCE OP I To enable current output NO

FLOW CHART FOR FORCE OUTPUT I SELECTION

1.3.2

FORCE OP I

FORCE OP I

NO

FORCE OP I

YES

MENU

CONT. NO

MENU

CONT. YES

A

A

SAVE PARM

NO

SAVE PARM

YES

UNIT COMES TO

NORMAL MODE

1.1.1

CONDT UNIT

ENABLES THE OUTPUT

CURRENT AS PER THE

SET VALUE

If set to YES the output current is enabled as per the processvariable value.

The actual value of the output current depends on the settingsin 3.1.1 CONDT MASee also 1.3.3 RANGE I


Section 4.0


NO MENU DESCRIPTION DEFAULT1.3.3 RANGE I To set the output current range 4-20mA

FLOW CHART FOR RANGE I SELECTION

1.3.3RANGE I

1.3.34-20mA

1.3.34-20/22E

MENUCONT. NO

MENUCONT. YES

A

A

SAVE PARM.NO

SAVE PARM.YES

UNIT COMES TO

NORMAL MODE

1.1.1CONDT UNIT

4-20/3.55E1.3.3

4-20mA

4-20/22E

4-20/3.55E

RANGE 4-20mA WITHOUT ERROR INDICATION

OUTPUT IS FORCED 22mA ON FAULT

OUTPUT IS FORCED TO 3.55mA ON FAULT

We can select out of three ranges.

When range with suffix of 22E or 3.55E is selected the currentoutput is forced to 22mA and 3.55mA in case of faultrespectively.

Range 4-20mA is without any error detection on current output.


Section 4.0


NO MENU DESCRIPTION DEFAULT2.1.1 TEST

DISP.To test the display NO

FLOW CHART FOR TEST DISP. SELECTION

2.1.1TEST DISP

2.1.1YES

2.1.1NO

88888888888888888888

A

AMENUCONT. NO

MENUCONT. YES

1.1.1CONDT UNIT

To test the display. If all digits are shown as 8.The display is OK.

Section 4.0



NO MENU DESCRIPTION DEFAULT2.1.2 TEST I To test the output current OFF

NOTE METER READING

CONT YES

TEST I

TEST I16 MA

12 MATEST I

TEST I8 MA

A

4 MATEST I

TEST I2.1.2

FLOW CHART FOR TEST I SELECTION

20 MATEST I

TEST I

CONT NO

CONT NOMENUMENU

CONT YES

1.1.1COND UNIT

A

This menu is used to test the loop current.

To check the current, break the loop and put mA meter inseries. Use accurate current meter with resolution of 00.00 mA.The displayed current values should be in range of ±0.1mA.

This menu can be used to check the control panel sideinstruments such as signal isolators/repeaters.

Section 4.0



NO MENU DESCRIPTION DEFAULT2.1.4 DATE

SLOPEShows the sensor slope aftercalibration

NA

B

B

FLOW CHART FOR DATE RESISTANCE SELECTION

2.1.4DATE RESIS.

DISPLAYDD MM YY

DISPLAYM OHM RES.

02/11/07DD MM YY

XXX.XXXXM OHM RES.

A

DISPLAYCONT. NO

DISPLAYCONT. YES

MENU

CONT. NO

MENUCONT. YES

CONDT. UNIT1.1.1

A

SHOWS DATE OF SENSOR CALIBRATION, SENSOR RESISTANCEAT THE TIME OF CALIBRATION

The date and sensor resistance are shown as per earliercalibration done through menu 3.6.1 SEN. CALB

Section 4.0




3.1.1 CONDTMA

To set the range for 4-20mAoutput as per conductivity value

LINEAR I

1.1.1CONDT

000000.0500US/CM

3.1.1LOG I BILINEAR

3.1.1

FLOW CHART FOR COND MA VALUE SELECTION

3.1.1CONDT MA

3.1.1LINEAR I

A

MENUCONT. NO

MENUCONT. YES

FOR 20MA

YESSAVE PARM.

NOSAVE PARM.

A

ENT US/CM

B

FOR 4MAENT US/CM

01000.0000US/CM

C

C

B

ENTER CONDT VALUE FOR 4 mA CURRENT OUTPUT

ENTER CONDT VALUE FOR20 mA CURRENT OUTPUT


Section 4.0



3.1.1 CONDTMA


LINEAR I

MID RANGE CURRENT OUTPUT

00012.001

20 mA CURRENT OUTPUT

ENTER CONDT VALUE FOR

ENTER CONDT VALUE FOR

CUS/CM01000.0000

ENT US/CMFOR 4MA

B

ENT US/CM

B

MENU

ENT US/CM

FOR 20MA

ACONDT MA3.1.1

FLOW CHART FOR COND MA VAL SELECTION

3.1.1BILINEAR

US/CM000000.0500

US/CM00050.0000

PAGE

ON PREVIOUS

Set the current output as per conductivity values.

OTHER OPTIONS NOTSHOWN FOR CLARITY

Section 4.0




3.1.1 CONDTMA


LINEAR I

US/CM

LINEAR

BILINEAR

LOG

mA

Three types of current outputs are available1 Linear Follows a linear equation between the conductivity

and the current output.e.g. 4mA @0.05 µS/cm, 20mA @10µS/cm

then we will get 12mA @ 5.0 µS/cm

Output = [16 x (CM-CRMIN) / (CRMAX- CRMIN)] + 4

CM Measured value of conductivityCRMIN Conductivity range MinimumCRMAX Conductivity range Maximum

Output =[16 x (5.0-0.05) / (10.0- 0.05)] + 4=[16 x (4.95) / (9.95)] + 4=[16 x 0.49] + 4~12mA


Section 4.0



3.1.1 CONDTMA

Contd

2 Bi linear Follows a two linear equations between theconductivity and the current output. [email protected]µS/cm, 10mA @5µS/cm one linear equation10mA@5µS/cm, 20mA@20µS/cm second linear equation

3 Log Follows a log equation between the conductivity andthe current output.

Output = [ 8 x log (CM) / (CRMAX /100) ] + 4

CM Measured value of conductivityCRMIN Conductivity range MinimumCRMAX Conductivity range Maximum

Output =[ 8x log (5.0) / (10/100) ] + 4=[8 x log (5.0) / (0.1)] + 4=[8 x log 50] + 4=[8 x 1.69] + 4=17.59 mA

Section 4.0




3.2.2 CODE1 To enable user menu password NO

FLOW CHART FOR CODE 1 SELECTION

3.2.2CODE 1

3.2.2NO

A

SAVE PARM.NO

SAVE PARM.

YES

CONDT UNIT

1.1.1

ACONT. NOMENU

YES3.2.2

MENUCONT. YES

PASSWORD IS ACTIVATED

FOR USER MENU


Section 4.0



3.2.4 LOCATION To set the location of thetransmitter

000

CONT. YESMENU

0000NPT001LOCATION

MENUCONT. NO

A

1.1.1CONDT UNIT

YESSAVE PARM.

NOSAVE PARM.

A

LOCATION0000000000

LOCATION3.2.4

FLOW CHART FOR LOCATION SELECTION

INSTRUMENT LOCATIONENTER ALPHANUMERICUSE UP ARROW AND RIGHT ARROW

This is the location referred by HART© communication.

Section 4.0




3.2.7 POLLADDR.

To set the polling address of thetransmitter

000-015

USE UP ARROW AND RIGHT ARROWENTER ALPHANUMERIC

INSTRUMENT POLL ADDR

FLOW CHART FOR POLL ADDR. SELECTION

3.2.7POLL ADDR.

0000 TO 15

A

SAVE PARM.NO

SAVE PARM.YES

CONDT UNIT1.1.1

ACONT. NOMENU

0 TO 15010

MENUCONT. YES

This is the address referred by HART© communication.By default it is set to “00” for single point operation.It is set in the range of “00-15” in multi drop configuration.

See section 5.0 for HART© Communication

Section 4.0




3.5.4 T SENCALB

To calibrate temperature sensor DISABLE

T SEN CALB3.5.4

A

DISABLE3.5.4 3.5.4

ENABLE

ENT. TEMP0000025.00

CONT. NOMENU MENU

CONT. YES

ACT. TEMPXX.XX

NOSAVE PARM. SAVE PARM.

YES

CONDT UNIT1.1.1

A

Section 4.0




3.5.4 T SENCALB

Contd...

This menu is used to calibrate the temperature sensor.

SMARTPro uses 2 wire RTD PT100/PT1000 as temperature sensor.This sensor gives temperature in terms of resistance. (See Annex 2).As the sensor cable length increases, the resistance of the cable addsup in the RTD resistance.

If the resistance of the sensor cable is say 1.0 Ohms the readingshown on the transmitter is 2 to 3 °C more than the actualtemperature. For small cable lengths this can be neglected and noneed for calibration.

To calibrate the sensor, dip the temperature sensor and standardthermometer in water at ambient temperature. Ensure that thetemperature sensor and the standard thermometer are completelysubmerged. Allow the system to stabilize for about 20 minutes. Followthe procedure as indicated in the flow chart.

Also see section 7.2

Check that the standard thermometer, RTD, thermistor thatis used for reference is calibrated and accurate.

Section 4.0




3.6.1 SENCALB

To calibrate the sensor *

Conductivity cell calibration

The design of the conductivity cell such as size, shape, position andcell condition determines the conductivity measured and is reflected incell constant K.

Any minor change in any of these parameters such as size, shape,position and condition of the cell changes the cell constant. Variationsare also seen from one sensor to other even if the design cellconstant is the same.

In these practical conditions it is necessary to calibrate theconductivity cell regularly with the help of standard conductivitysolutions.

During the process of calibration we find out the exact cell constant.The transmitter notes down this value and uses this during furthercalculations.

This procedure is to be followed every time the sensor is changed orto be recalibrated. In this procedure, the sensor is dipped in buffersolutions of known conductivity value.

Section 4.0




3.6.1 SENCALB

CONTINUED *

FLOW CHART FOR SENSOR CALIBRATION SELECTION

3.6.1SEN. CALB

DIP SENSTD. SOLU.

A

01.0000000CELL VALUE

ENT US/CM00100.0000

B

DEG. C25.00

OF THE SOLUTIONENTER THE CONDUCTIVITY

ENTER CELL CONSTANT

SOLUTION TEMPERATURE

CONDUCTIVITY SOLUTIONDIP THE SENSOR IN KNOWN

IS SHOWN

Section 4.0




3.6.1 SENCALB

CONTINUED *

A

1.1.1CONDT UNIT

FLOW CHART FOR SENSOR CALIBRATION SELECTION

100.000US/CM

XXXXXXXXCELL VALUE

B

MENUCONT. NO

MENUCONT. YES

YESSAVE PARM.

NOSAVE PARM.

ENTER DATE12/11/07

CELL CONSTANTDISPLAYS CALCULATED

OF SOLUTIONMEASURED VALUEDISPLAYS ACTUAL

CONTD

Section 4.0




3.6.2 CELLCONST

To enter the cell constant 1.00

A

00000.6500TDS K FACT

SAVE PARM.NO

SAVE PARM.YES

CONT. YES

MENU

CONT. NO

MENU

A

CELL VALUEXXXXXXXX

CELL CONST3.6.2

FLOW CHART FOR CELL CONSTANT SELECTION

CONDT UNIT

1.1.1

TDS VALUE

FACTOR TO CALCULATE

CONSTANT VALUE

SET THE CELL

Enter the value of cell constant (K) written on the cell body.

The actual calculated value of the cell constant is shown aftersensor calibration.

SMARTPro 8967P



3.6.2 CELLCONST

Contd.. 1.00

It is necessary to set this constant at every sensorcalibration.

Before calibrating the sensor, set this constant to thevalue which is written on the sensor body. Failing to doso may show wrong reading.

Let us suppose that after first sensor calibration the cellconstant shown is k=0.995.

Before next recalibration set this value to k=1.00 as written onsensor, save this value and then proceed for sensor calibration.

Section 4.0

Operation

SMARTPro 8967P


Section 4.0

Operation


3.6.3 TEMPCOMP

To select temperaturecompensation method

LINEAR

ENTER REFERENCE TEMPERATUREREADINGS ARE NORMALISEDTO THIS TEMPERATURE

ENTER TEMPERATURECOEFFICIENT, DEFAULT VALUE

1.1.1CONDT UNIT

FLOW CHART FOR TEMPERATURE COMPENSATION SELECTION

3.6.3TEMP COMP

COMP. METH.LINEAR I

A

MENUCONT. NO

MENUCONT. YES

YESSAVE PARM.

NOSAVE PARM.

ENT REF T.0000025.00

A

BYPASSCOMP. METH.

0000000.02ENT T. CODE

IS 0.02

Select temperature compensation method. Recommended to keepalways linear.

SMARTPro 8967P



4.1.1 EXIT EXIT from menu --

This menu is used to come out of user Menu.

Section 4.0

Operation

SMARTPro 8967P



4.1.2 FCTCNFG

Default factory settings --

If this key is pressed, The transmitter is initialized to thefactory default settings. All the user parameters and values areRESET.

User must initialize/set the parameters as per the specificrange and sensor to make the transmitter functional again.

The main parameters to be set by user are


1.1.1 COND UNIT To change the COND unit µS/cm


Set the COND unit and Temp Unit as per Requirement

1.3.2 ENABLE I To enable the output current YES

Set the ENABLE I to YES to enable Current output.

3.1.1 COND MA To set the range for 4-20mAoutput as per COND value

3.6.1 SENS CALB TO calibrate the sensor

3.6.2 CELL CONST To set Cell Constant

Set the COND values for which you want to range 4-20mA.Set cell constant as written on cell.Do sensor calibration and start using the transmitter again.

Section 4.0

Operation

How to use Conductivity meter as TDS meter?

The conductivity transmitter can be configured to work as TDSmeter.

The main parameters to be set by user are


1.1.1 TDS UNIT To change the TDS unit ppm


Set the TDS unit and Temp Unit as per Requirement

1.3.2 ENABLE I To enable the output current YES

Set the ENABLE I to YES to enable Current output.

3.1.1 COND MA To set the range for 4-20mAoutput as per TDS value

ppm

3.6.1 SENS CALB TO calibrate the sensor -

3.6.2 CELL CONST To set Cell Constant and TDSfactor

-

Set the TDS values for which you want to range 4-20mA.Set cell constant as written on cell and desired TDS constant.Do sensor calibration and start using the transmitter again.

The sensor calibration is as shown in menu 3.6.1 and is applicable toTDS meter also

SMARTPro 8967P


Section 4.0

Operation

SMARTPro 8967P


The SMARTPro 8967P is equipped with HART©

communication.

The transmitter can be used in multi drop configuration or as aSingle HART© instrument.

Following configuration is used to set the SMARTPro 8967Ptransmitter

-

REAR VIEW

-IO

UT

MINIMUM LOAD

250 Ohms

12-36VDC

+

+

18-36VDC

2

4/20mA + DIGITAL

SUPPLY

VOLTAGE

HART

COMMUNICATOR

SMARTPro

1

Connect the HART© communicator across 250Ω resistorin series with power supply to configure /monitor thetransmitter parameters.

HART © Communication

Section 5.0

5.1 HART© communication configurations

SMARTPro 8967P


5.2 HARTSingle point configuration is shown below.

This

© Communication

configuration is used to set and check the transmitters locally


Section 5.0

SMARTPro 8967P


5.2 HART© Communication

Multipoint configuration is shown below.

ThisThe cables carry only digital signals, The loop current is set to 4mA.

Monitoring data is available on control system/ PC as shown.

MULTIDROP CONFIGURATION

configuration is used to set and check up to 15 transmitters.

MINIMUM LOAD

250 Ohms SUPPLY

VOLTAGE

+

PC /

CONTORL SYSTEM

-

SMARTPro

HART

COMMUNICATOR

UPTO 15

TRANSMITTERS

12-36VDC

+

-

DIGITAL SIGNALS ONLY

BRIDGE

Notes

Use HART©

communicator to set up SMARTPro 8967P

For trouble free and effective communication ensureloop load to be 250 Ohms minimum.

The Connection to HART© is optionalSMARTPro 8967P can also be configured usingkeypad. Refer section 4.0


Section 5.0

Maintenance

Section 6.0

SMARTPro 8967P


6.1 Probe Care and Maintenance

Conductivity cell requires maintenainterval is decided by the user depethe electrode is used. Typically in the range of one to three months.

6.2 How to store the electrode for long timeNo special care is required for the conductivity cell. Store theelectrode in the packing which was sent along with the electrode.Keep the electrode in dry area.

Avoid extreme temperature and whether conditions.

6.3 Storage after use in processMake sure that conductivity sensor is clean, dry and no deposition isobserved.

Clean the sensor in case of deposition, clean the electrode with IsoPropyl Alcohol (IPA) before storing.

nce at regular intervals. Thisnding on the process fluid in which

It is necessary to check for useful tips on electrode care inInstruction manual provided with the electrode.

If required keep the electrode in IPA overnight

6.4 How to clean the electrode

SMARTPro 8967P


Clean the sensor in case of deposition, clean the electrode with IsoPropyl Alcohol (IPA) before using.

If required keep the electrode in IPA overnight

It recommended to clean the electrode before eachcalibration.

Maintenance

Section 6.0

6.5 Do’s and Don’ts for Conductivity electrodes

SMARTPro 8967P


Read the operating manual provided if any with the electrodecarefully.

Before actually putting the electrode in to work, remove thespecial transportation cover(If any) provided inside thetransportation box

Clean the conductivity cell under low pressure tap water or anysuggested cleaning solution.

Calibrate the transmitter with conductivity electrode as asystem. Use this calibrated system to measure conductivityvalues. If you change/replace transmitter and/or electrode it isnecessary to recalibrate as a system.

Calibrate the sensor at regular intervals

Maintenance

Section 6.0

7.0 Trouble shooting

Trouble Shooting

Section 7.0

SMARTPro 8967P


The SMARTPro 8967P is a Microcontroller based transmitter whichgives out error messages on the display.User can identify the possible causes of the problems and take thecorrective actions. The error messages and their meanings are givenbelow

Error Message Action

Temp sen open Check the temperature sensor wires for open orloose connection. Reconnect the wires

Check the sensor connection at connector male/female joint is proper.

Check link JP1 short for PT100/Open for PT1000

Check the resistance of the RTD element , Itshould be109.73 Ohms @ 25 deg C for PT1001097.3 Ohms @ 25 deg C for PT1000If open then replace the Temperature sensor

Temp sen short Check the temperature sensor wires for shortcircuit on terminals in junction box


Check link JP1 short for PT100/Open for PT1000

Check the resistance of the RTD element , Itshould be109.73 Ohms @ 25 deg C for PT1001097.3 Ohms @ 25 deg C for PT1000If short then replace the Temperature sensor

In case of conductivity sensor with inbuilt temperature sensor, it isnecessary to replace the conductivity sensor.

Trouble Shooting

Section 7.0

SMARTPro 8967P


Error Message Action

Cond sen open Check the sensor wires for open or looseconnection. Reconnect the wires


Cond sen short Check the sensor wires for short circuit onterminals in junction box


Disconnect the cable from the sensor, check theresistance between the two conductivity sensorterminals. It should show open.

If short , remove the sensor from the process,clean , dry and check again.

7.1 Causes and solution to problems

Trouble Shooting

Section 7.0

SMARTPro 8967P


Problem Causes Solutions

No display No power Apply power

Less power Ensure power ontransmitter terminals tobe within 12-36VDC

Power reverse polarity Correct the polarity

Loose connection Tighten the power supplywires

In correctConductivityValue

Sensor not calibrated forlong time.

Recalibrate the sensor

Sensor mechanicallydamaged

Replace the sensor

dirty process fluid Clean the sensor as perthe procedure

Sensor not dippedproperly in process

Ensure that process fluidentirely covers the sensorproperly.

External noise pick up Follow proper groundingand shielding proceduresas discussed in section2.0

7.2 Problem in temperature measurement and calibration

SMARTPro 8967P


Temperature shown by the instrument does not match with thereading from standard thermometer. (Difference more than ±1 ºC)

Check the followingCheck that the standard thermometer, RTD, thermistor that isused for reference is calibrated and accurate.General purpose liquid in glass thermometers can have largeerrors.Are the measurements done at the same point ?Is standard thermometer dipped up to correct level?

It is necessary to calibrate the temperature sensor duringinstallation and commissioning.

Trouble Shooting

Section 7.0


SMARTPro 8967P

7.3 Conductivity reading does not match with lab reading

It is normal to have difference in conductivity readings made on on-line instrument and lab instrument.

This phenomenon is still amplified on ultrapure water conductivitymeasurements (conductivity < 10µS/cm). The lab reading and the online instrument reading will never match in this case.

The online instrument is subjected to the actual process conditionssuch as process temperature, stray voltages, process pressure, supplyvoltage variations etc.

The lab instrument works at set standard conditions. Some impuritiesare added, the temperature of the lab sample changes and thedifferences are seen between both readings.

How to minimize the gap in readings?You can check both the Lab and On-line instruments by usingthe same standard solution and comparing the readings

If not matching , calibrate both the instruments using thesame standard solution

Ensure both the instrument use cells with same constant

Different cell constants give different accuracy levels

Use single point calibration method to match the readings.See section 4.0, menu 3.6.1

Trouble Shooting

Section 7.0


SMARTPro 8967P

7.4 Is the transmitter working OK?

Trouble Shooting

Section 7.0

In case of any problems it is necessary first to isolate the problemareas. Sensor or the transmitter is giving problem?

To Simulate Conductivity inputsTo check this, disconnect the sensor wires from transmitter end.Connect a Decade Box to transmitter. If the transmitter is workingproperly it will show the accurate conductivity readings.

Follow the procedure below to check the transmitter1 Turn off the transmitter supply. Disconnect the sensor wires from

the transmitter side by removing the junction box cover.2 Connect the Decade Box to the transmitter in place of sensor3 Turn ON the transmitter, Turn Off auto temperature

compensation and set 25°C manually.4 Simulate Resistance from Decade box and check the results.5 Note down the cell constant and then Set Cell constant as “1.0”

in menu 3.6.2 Cell Const (Refer section 4 for more details)6 Save and come out of the menu7 Check the readings as per the table.(±0.5%)

Resistance Reading Resistance Reading

1MΩ 1.00 S/cm 100K Ω 10.00S/cm

500KΩ Ω 20.00S/cm

250KΩ 40.00S/cm

125KΩ 100.00S/cm

8 If the above readings are OK. It is necessary to clean andrecalibrate the sensor.

9 You can use the earlier noted down cell constant as per point 5

.00 S/cm 50K

.00 S/cm

.00 S/cmΩ25K

Ω10K


SMARTPro 8967P

7.5 Is the transmitter working OK?

Trouble Shooting

Section 7.0

In case of problems it is necessary first to isolate the problem areas.Sensor or the transmitter is giving problem?

To Simulate temperature inputsTo check this, disconnect the temperature sensor wires fromtransmitter end. Connect resistance decade box to transmitterTemperature input terminals. If the transmitter is working properly itshows the accurate temperature readings.

Follow the procedure below to check the transmitter1 Turn off the transmitter supply. Disconnect the sensor wires from

the transmitter side by removing the junction box cover.2 Connect the decade box to transmitter in place of temperature

sensor3 Turn ON the transmitter4 Simulate 109.73Ω from decade box.5 The secondary display will show 25.00°C6 You can check this for different set of Decade box inputs7 The measured temperature may not exactly match with the table

values. This is because of the offset of temperature value addedor subtracted during the temperature sensor calibration.

8 The same offset is applied to these simulated inputs. Thecontroller is measuring the temperature correctly if the differencebetween the two table readings and same two transmitterreadings is within +/- 0.5° C.

9 If offset of 2°C is added during calibration. The transmitter willread the value 115.54 as 40 °C, but display as 42°C.

10 Refer Annexure II for Pt 100 resistance table


SMARTPro 8967P

Annexure I

Annexure

Conductivity of various aqueous solutions at 25°C

Solution Conductivity Resistivity

Ultra pure Water 0.055 µS/cm 18.18 MΩ-cm

Power plant boiler water 0.05-1 µS/cm 1-18 MΩ-cm

Distilled water 0.5 µS/cm 2 MΩ-cm

De-ionized water 0.1-10 µS/cm 0.1-10 MΩ-cm

De-mineralized water 1-80 µS/cm 0.01-1 MΩ-cm

Mountain water 10 µS/cm 0.1 MΩ-cm

Drinking water 0.5-1 mS/cm 1-2 KΩ-cm

Waste water 0.9-9 mS/cm 0.1-1 KΩ-cm

Potable water Maximum 1.5 mS/cm 0.7 KΩ-cm

Brackish water 1-80 mS/cm 0.01-1 KΩ-cm

Industrial Process water 7-140 mS/cm -

Ocean Water 53 mS/cm -


SMARTPro 8967P

Annexure II

Annexure

Temperature in ºC versus resistance in ohms

Temperature Pt100 Pt 1000 Temperature Pt100 Pt 1000

-20 92.16 921.6 65 125.16 1251.6

-10 96.09 960.9 70 127.07 1270.7

0 100.00 1000.0 80 130.89 1308.9

5 101.95 1019.5 90 134.70 1347.0

10 103.90 1039.0 100 138.50 1385.0

15 105.85 1058.5 110 142.29 1422.9

20 107.79 1077.9 120 146.06 1460.6

25 109.73 1097.3 130 149.82 1498.2

30 111.67 1116.7 140 153.58 1535.8

35 113.61 1136.1 150 157.31 1573.1

40 115.54 1155.4 160 161.04 1610.4

45 117.47 1174.7 170 164.76 1647.6

50 119.40 1194.0 180 168.46 1684.6

55 121.32 1213.2 190 172.16 1721.6

60 123.24 1232.4 200 175.84 1758.4


SMARTPro 8967P

Annexure III

Annexure

Cell constant and measurement range

Cell constant Measuring range limits

K/cm Range Conductivity Resistivity

0.005 Min 0.005 µS/cm 200 MΩ.cm

Max 50.0 µS/cm 20 KΩ.cm

0.01 Min 0.01 µS/cm 100 MΩ.cm

Max 100 µS/cm 10 KΩ.cm

0.10 Min 0.10 µS/cm 10 MΩ.cm

Max 1.00 mS/cm 1 KΩ.cm

1.00 Min 1.0 µS/cm 1 MΩ.cm

Max 10.0 mS/cm 0.1 KΩ.cm

10.0 Min 10.0 µS/cm 0.1 MΩ.cm



SMARTPro 8967P

Annexure IV

Annexure

Cable length and range of measurement

Cell constant Measuring range limits SignalFrequency

Hz

*CableLengthmeters

K/cm Range Conductivity Resistivity

0.005 Min 0.005 µS/cm 200 MΩ.cm 70 3

Max 50.0 µS/cm 20 KΩ.cm

1100 NA

0.01 Min 0.01 µS/cm 100 MΩ.cm 70 10

Max 100 µS/cm 10 KΩ.cm

1100 5

0.10 Min 0.10 µS/cm 10 MΩ.cm 70 10

Max 1.00 mS/cm 1 KΩ.cm

1100 5

1.00 Min 1.0 µS/cm 1 MΩ.cm 70 10


1100 5

10.0 Min 10.0 µS/cm 0.1 MΩ.cm 70 10


1100 5

*Conductivity Accuracy of % of Full scale.± 0.5


SMARTPro 8967P

Annexure V

Annexure

Temperature dependency of Conductivity

The measured conductivity is temperature dependent.

Conductivity as function of temperature is given as

Ct=C25(1+a(t-25))

Ct Conductivity at temperature t

a Temperature coefficient expressed in %/°Ct Process temperature in °C

To explain it in more detail, let us consider some numerical values

Ct=C25(1+a(t-25))

If we consider following values of the parameters

Ct 100µS/cm @ 30°C

a 2%/°Ct 30 °C

The transmitter will show the normalized value as below

C25=C30 /(1+a(t-25)

C25=100 /(1+0.02(30-25))

C25=100 /(1.1)C25=90.90 µS/cm @ 25°C

aquacon smartpro 8967p

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