User’s Model IC200 Manual 2-wire transmitter for Inductive ... · IM 12D8B2-E-H 5th Edition...

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IM 12D8B2-E-H 5th Edition User’s Manual Model IC200 2-wire transmitter for Inductive Conductivity

Transcript of User’s Model IC200 Manual 2-wire transmitter for Inductive ... · IM 12D8B2-E-H 5th Edition...

Page 1: User’s Model IC200 Manual 2-wire transmitter for Inductive ... · IM 12D8B2-E-H 5th Edition User’s Manual Model IC200 2-wire transmitter for Inductive Conductivity

IM 12D8B2-E-H5th Edition

User’sManual

Model IC200 2-wire transmitter forInductive Conductivity

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FAILHOLD

MEASURECALDISPLAYHOLD

YES NO

ENT

RANGESET HOLDT E M P.AIR SET

*NO MODEYES

> ENT>

MODE

m S / c mM Ω / c m

k Ω / c mµ S / c m

. SERVICE

Output hold flag

Measuredvalue display

Message display

Key prompt flags

Selection keysYES : Accept settingNO : Change to new setting

Adjustment keys> : Choose digit for adjustment^ : Adjust digit (to decrease pass

through zero)ENT : Enter new value

NOTE: First digit changes from 1, -1, - to blank.

Select mode measure/maintenance

Can be used to escape program at anytime

Fail flag Menu pointer flags

Menu for maintenan-ce functions (seechapter 5)

Menu for commissio-ning functions (seechapter 6)

Select modemeasure/commissioning

IM 12D8B2-E-H

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IM 12D8B2-E-H

CONTENTS

1. INTRODUCTION1-1. Application......................................................................11-2. Measurement Principle....................................................11-3. Functional description .....................................................1

2. SPECIFICATIONS.................................................................2

3. INSTALLATION AND WIRING .............................................63-1. Installation and dimensions .............................................63-2. Wiring ..........................................................................93-3. Access to terminal and cable entry ...............................10

4. START UP ........................................................................124-1. The Dispayfunctions......................................................124-2. The Outputfunctions .....................................................124-3. TheTemperature compensation.....................................134-4. The Calibration..............................................................13

5. Configuration in Maintenance mode...............................145-1. Grab sample calibration ................................................145-2. Selecting a value to display...........................................165-3. Use of the hold function................................................18

6. CONFIGURATION IN COMMISSIONING MODE .............206-1. Output range adjustment ..............................................206-2. Set up Hold Function....................................................226-3. Temperature compensation...........................................246-4. Air set ........................................................................26

7. CONFIGURATION IN SERVICE MODE ............................287-0. Access to service..........................................................297-1. Temperature units .........................................................307-2. Reference temperature .................................................307-3. Output functions ...........................................................307-4. Outputtable...................................................................317-5. Installation factor...........................................................327-6. Auto return function ......................................................327-7. Temperature adjustment ..............................................337-8. Signalling of Fail condition (Burn Out)............................337-9. Weight % on second display line ..................................347-10. Temperature Coefficient ..............................................347-11. Selection of Standard Electrolytes...............................357-12. Matrix Temperature Compensation range (see 14) ......367-13. Enable E6 Function.....................................................377-14. Selection between "soft"or "hard" fail situations ..........377-15. Pass code ..................................................................387-16. Restore default settings ..............................................38

8. OPERATIONS OVERVIEW .................................................39

9. TROUBLE SHOOTING.......................................................409-1. Introduction...................................................................409-2. Self diagnostic of the conductivity sensor .....................409-3. self diagnostic of the temperature sensor .....................409-4. Self diagnostic of the electronics...................................409-5. Checking during operation............................................409-6. Error messages and explanation...................................41

10.SYSTEM DIAGRAMS .........................................................4210-1. ATEX ........................................................................4210-2. FM ........................................................................4310-3. CSA ........................................................................44

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1-1. ApplicationThe Model IC200 inductive conductivity 2-wire transmitter is designed for use with theModel ISC40 sensor. This revolutionary con-ductivity measuring system features ± 0.5%accuracy over a wide range of conductivityvalues (1 to 2,000,000 µS/cm) and processtemperatures (-20 to 130°C/0 to 270°F) wit-hout changing cell constant or recalibration.

The IC200 transmitter is designed for appli-cations in which the concentration of acid,alkaline or salt solutions is measured for pro-cess control purposes. To aid in processcontrol applications, the IC200 features 4-20mA (@24 VDC), 2-wire transmission. Theunit can linearise the output range in con-centration units and offers the potential forsufficient “matrix” temperature coeffencientdepending on the process composition.

A self-tuning preamplifier provides a veryaccurate measurement over the full measu-ring range. The IC200 also features autozeroing to eliminate traditional temperatureand long term drift caused by magnetic off-set between the two toriods.The model ISC40 sensor is a rugged steel-backed sensor encapsulated with the hig-hest quality engineering plastic known today(Victrex PEEK) for long service life in bothabrasive an chemically corrosive processes.

The stainless steel mounting thread and theViton gasket allow safe and reliable installa-tion. Thanks to the long insertion depth, thesenosor fits in almost any installation either by“bulkhead mounting” through a flange or tankwall, or by using one of the process adaptorkits (e.g. for flow-through or immersion servi-ce).

The large bore (over 17mm = 11/16”) provi-des long-term stability, since it preventsmeasuring errors caused by coating or plug-ging. The large bore also offers fast responseeven at low flow rates.

1-2. Measurement principleContrary to contact electrode conductivity,the EXA IC series analyses the conductivitywithout any contact between electrodes andprocess fluid. The measurement is based oninductive coupling of 2 ring transformers(Toroids) by the liquid.

Fig.1. Inductive conductivity measurem-ten principle

1

1.INTRODUCTION

Ontvangsspoel StuurspoelV3 V1

N3 N1

"V2" = i x Rvloeistof

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The transmitter supplies a reference voltageat a high frequency to the “drive coil”. Thecore of this coil is of a high permeabilitymagnetic material, and a strong magneticfield is generated in the toriod.The liquid flows through the hole in thetoroid and can be considered as a “oneturn” secondary winding.

The magnetic field will induce a voltage in thissecondary winding. The induced current inthe liquid winding is proportional to this volta-ge and the conductance of the liquid “oneturn winding” according to the law of Ohm.The conductance (1/R) is proportional to thespecific conductivity and a constant factorthat is determined by the geometry of thesensor (length divided by surface area of thehole in the toroid) and the installation of thesensor.

There are 2 toroids mounted in the “donut”shaped sensor. The liquid also flows throughthe second toroid and therefore the liquidturn can be considered as a primary windingof the second ring transformer.The current liquid will create a magnetic fieldin the second toriod. The induced voltagebeing the result of this magnetic field can bemeasured as an output. The output voltage of this “receive coil” istherfore proportional to the specific conduc-tivity of the process liquid.

1-3. Functional descriptionThe EXA IC200 is a real time micro-controlleroperated conductivity-analyzing system. Ituses a dedicated micro-controller to controlall functions necessary in such a system.

The input and output functions are concen-trated in the analogue section of the instru-ment. Even these functions are operatedthrough special interfaces designed to give aminimum of interference problems to thedigital functions. A separation of functions isstrictly executed.

By using very low power components it ispossible to make a complete micro-compu-ter system work on less than 4 mA current.

By using EEPROM for essential informationthe opertating parameters are fixed inmemory without the need for batteries. Thesupply-voltage between 17 and 40 Volt isacceptable.

The user-interface is limited to a basic set of6 keys accessible through the flexible win-dow cover.

The software is designed with the user inmind. It uses simple 3 layer set-up to com-municate with the operator by giving messa-ges on the second line of the display areaand indicating which keys are to be pressed

in the display too.

The keys are scanned continuously and theactions are taken immediately. An extensivesystem of checking values and parametersis implemented.

From the outside the IC200 looks and worksjust as a normal conductivity transmitter. Theoperator has only access to those functionsthat are needed for regular maintenance ofthe analyser. Traditional transmitters featuresimplicity and IC200 offers the same simpli-city yet a much higher level fo functionalityand flexibility.

The power fo the microprocessor is utilisedfor:– Diagnostic functions to increase the

dependibility.– Self-tuning preamplifier to increase the

rangeability to cover almost all conducti-vity applications.

– Input/output flexibility to offer the usersolutions to compatibility concerns andto non-linearity characteristics of someelectrolytes.

– Auto zeroing to insure long term stability.– Sophisticated temperature compensation

to achieve termperature independant rea-dings for even the most difficult proces-ses like Sulfuic Acid and SodiumHydroxide.

2

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General specificationsA. Input specifications : Compatible to Yokogawa Model

ISC40 indcutive conductivity sensorwith integrated temperature sensor.

B. Measuring range- Conductivity : 0 to 1999 mS/cm [at 25 °C (77°F)

reference temperature].Minimum conductivity at processtemperature: 1.0 µS/cm.Maximum conductivity at processtemperature: 3000 mS/cm.

- Temperature : -20 to 140°C (0 to 280°F). Rangesusing Yokogawa sensor modelISC40.

C. Indicating range- Main display : 0.0 µS/cm to 1999 mS/cm.- Message display : -20 to 140 °C (0 to 280°F). 0 to

199.9%.D. Transmission signal : 4 to 20 mA DC; maximum load

550 Ohm at 24 Volt.- Maximum output current : 20.5 mA.- Use selectable maximum : 22 mA (continueous or single 30

ouput current on fault second pulse).condition

E Transmission range : User programmable to any con-ductivity range within th indicatingrange.

- Minimum span : 100 µS/cm.- Maximum span : 1999 mS/cm.- Maximum. zero suppresion: 90% [low value (4 mA) corresponds

to conductivity value <1 S/cm]A user programmable output tablecan be set up in 21 steps.

F. Power supply- Model IC200G : 17 to 40 Volt DC, dependent on

load.- Model IC200S : 17 to 31.5 Volt DC, powered from

a certified zener barrier or isolatedpower supply.

G. Power consumption : maximum 0.9 VA.

Functional specificationsA. Performance (*)

- Linearity : 0.2% FS ±0.2 µS/cm.- Repeatability : 0.2% FS ±0.2 µS/cm.- Accuracy : 0.5% FS ±0.3 µS/cm.- Influence of ambient

temperature changes : 0.1% per °C ±0.05 µS/cm.- Step response : 90% (<2 decades) in m6 seconds.

1200

1000

800

600

400

200

0 1718 20 24 40

Ohm

550

Supply voltage (Volt)

Load

res

ista

nce

(Ω)

IM 12D8B2-E-H

3

2. SPECIFICATIONS

Fig. 2. Maximum load resistance as function of supply voltage

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B. Temperature compensation : Automatic between -10 and 130 °C(10 to 270°F).

C. Reference temperature : User programmable 0 to 100 °C(30 to 210°F).

D. Temperature compensationalgorithm- User selectable - According to IEC 746-3 tables for

NaCl.- Process calibrated or user pro-

grammable linear compensationfactor -9.99 to 9.99% per °C.

- User selectable values for specificprocess liquids including SulphuricAcid, Hydrochloric Acid, Nitric Acidand Sodium Hydroxide.

- User programmable values for spe-cific process liquids (user defined).

(*) Performance of the transmitter and sesor exclusive of processeffects.

Environment and Operational conditionsA. Ambiemt temperature : -10 to 55 ºC (10 to 131 ºF)

Excursions to -30 ºC (20 ºF) do notinfluence the current output function and excurisons to 70 ºC(160 ºF) are acceptable too.

B. LCD display function : -10 to 70°C (10 to 160°F).C. Storage temperature : -30 to 70°C (-20 to 160°F).D. Relative humidity : 10 to 90%.E. Weather protection : Rain and dust tight to IP 65 (NEMA

4X).

F. Data protection : Non volatile memory (EEPROM);three-fold back-up.

G. Voltage supply interruption : <50 mS.H. Power down : No effect, reset to measurementI. Operation protection : 3 digit passcode.

Model specification

1 Other languages on request, please contact your local salesorganisation.

IM 12D8B2-E-H

4

Model Suffix code Option code DescriptionIC200G ...........................................General purpose 2-wire

transmitter for inductive conductivity

IC200S ...........................................Intrinsic safe 2-wire transmit-ter for inductive conductivity

-E .......................................European version (S-E: ATEX)

-U .......................................US version (S-U: FM)-C .......................................Canadian version (S-C:CSA)

(IC200S version only)User’s manual -E...............................English version 1

*A .......................Style codeOptions /H ...................Hood for sunlight protection

/U ...................Universal pipe and wallmounting kit

/SCT............... Stainless steel tagplate/Q ................... Quality certificate

NOTE: The first two characters of the

serial number refers to the year

and month of manufacturing

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ConstructionA. Display method : Custom liquid christal display.

- Main display : 3h digit, 12.5 mm high.- Message display : 6 alfanumeric characters, 7 mm

high.- Special fields : Flags for status indication (Hold

output signal condition; Fault con-dition). Measuring units: µS/cm;mS/cm.

- Key prompts : YES, NO, ^, >, ENT. Menu pointer.B. Keys : 6 keys operated through flexible

window with tactile feedback andone hidden key behind the frontcover.

C. Housing- Housing material : Cast aluminium with chemical resi-

stant coating. Cover fixed withstainless steel screws in stainlesssteel inserts.

- Window : Flexible Poly-carbonate.- Colours used : Moss green cover on off-white body.- Cable entries : Two glands PG 16 (1/2” NPT

adaptor for US model). Hose con-nection optional.

- Cable terminals : For maximum 2.5 mm2 cable (cablefinishings prefered).

- Earth connection : For external ground.- Labels : Stainless steel type plate. Optional

stainless steel tagplate.D. Mounting configurations

- Bracket mounting : Two M6 bolts, 9 mm long. Wall,panel or pipe mounting by theoptional mounting kit.

E Shipping details- Dimensions : wxhxd = 162x178x115 mm

(6.5x7x4.5”)- Package : wxhxd = 225x225x220 mm

(9x9x8.6")- Weight : approximately 2.5 kg (5 lbs)

Regulatory complianceA. Intrinsic safety : Meets ATEX directives 94/9/EC

<Ex> II 2 (1) G EEx ib [ia] IIC T6 for ambient temperature -10 to 40°CT4 for ambient temperature -10 to 55°CKEMA 00 ATEX 1067 X.FM intrinsic safety for IS CL1,DIV1, GP ABCDT3B for Ta -10 to 55 °C.T4 for Ta -10 to 40 °C.Approval report: J.I. 1Y1A7.AXCSA intrinsic safety for Ex [ia] ClassI, Division 1, groups C and D, T4AApproval file: LR 102851-1

B. Electromagnetic compatibility: meets council directive 80/336/EEC- Emission : meets EN55011 requirements:class B- Immunity : meets prEN50082-1 requirements:

Burst (Fast transient pulses) con-form to IEC 801-4:0.2 % FS.Electrostatic Discharge conform toIEC 801-2: 0.2 % FS.Electromagnetic radiation conformIEC 801-3: 2 % FS ±10mS/cm.

* Note: Intrinsic safety only guaranteed when used in combinationwith an ISC40S sensor.

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3-1. Installation and dimensions3-1-1. Installation siteAs the transmitter is a rain-tight type, it canbe installed outdoors as well as indoors. Itshould, however, be installed as close aspossible to the sensors avoiding long cablelengths between sensors and transmitter.The certified version can be installed in Zone1.Select an installation site where:- mechanical vibrations and shocks are

negligible;- no relay/power switches are in the direct

environment;- the transmitter is not mounted in direct

sunlight and severe weather conditions;- maintenance activities are possible (no

corrosive atmospheres).The ambient temperature and humidityshould be within the limits of the specifica-tions.

3-2-1. Mounting methodsThe EXA IC200 tranmitter has universalmounting possibilities:- Panel mounting using self tapping

screws.- Surface mounting on a plate (by bolts

from the back).- Wall mounting on a bracket (e.g. thick

brick wall).- Pipe mounting using a bracket on a hori-

zontal or vertical pipe (maximum diame-ter 50 mm).

3. INSTALLATION AND WIRING

IM 12D8B2-E-H

Fig. 3. Mounting methods (panel mounting, surface mounting)

6

56 (±0.2)2M6 bouten

162 (6.4)

180

(7 0

30 (1

.2)

77

115 (4.5)

56 ±0.2PG 16SUPPLY M6 (2X)

PG 16INPUT

SPACING PANELCUT-OUT

CUT-OUT DIMENSION

min. 203 mm(8.0”) 154 (6.06)

4 (.16) Typical(2 places)

30

30 (1

.18)

172

(6.7

7)

min

. 22

9 m

m(9

.0”)

PANEELMONTAGE VERZONKEN MONTAGE

1. Remove cover and slide instrument in panel.2. Mark mounting holes on panel.3. Remove instrument and drill mounting holes.4. Slide instruments in panel and mount.

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Pipe mounting(vertical)

wall mounting

Pipe mounting(horizontal)

2” I.D. pipe

WALL MOUNTING PIPEMOUNTING (VERTICAL) PIPEMOUNTING (HORIZONTAL)

56

2x ø6,6

4x ø10

70

115

77

200

A = Pipe support bracket (1 piece)B = U-bolt (1 piece)C = Mounting plate (1 piece))D = 4 screws (M5)

2 screws (M6).

EXA 200

A

A

B

D

B

Fig. 4. Universal wall/pipe mounting kit

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3-1-3. Installation of the sensorThe Model ISC40 is a “donut” shaped sen-sor. Preferably, the process will flow throughthe hole of the donut with the temperaturecompensator up-stream. For minimalobstruction of the flow and for accuratemeasurement without the need for calibra-tion of the installation factor, the process willflow freely around the donut, allowing a mini-mum distance of 25 mm (1”) between donutand process piping. (d)The sensor is provided with a gasket andretaining nut. This allows “bulkhead moun-ting” in tank wall or standard flange througha hole of 27 mm (1.1”) diameter (A). theinsertion is 125 mm under the flange.Two flats are provided with wrench size 20mm (0.8”) to allow easy mounting and align-ment of the sensor. The model identificationon one flat aligns with the “up-stream” posi-tion of the sensor.

For On-line mounting adapters are availablefor standard 2” process connection (Gasthread, NPT, ANSI-flange, DIN-flange).For by-pass measurement flow fittings areavailable in Polyporpylene, PolyvinylideneFlouride and Stainless Steel.

For measurements in open ducts or vesselsan immersion fitting in CPVC or StainlessSteel is available.

For easy wiring the sensor must be locatedwithin 5 m (15”) from the transmitter usingthe integral sensor cabling.

Fig. 5. Dimensions

8

Ø 40 ( 1.57)

wrench opening 20 ( 0.79 )

wrench opening 32 ( 1.42 )

thermistor (Pt 1000)

ground

secondary

primary

YOKOGAWA

G3/4

47(1.85)

11121713151614

L= 20 000 ( 800 )

ca 2

40 (

9.45

)

40 (

1.57

)10

0 (3

.94)

Hole in flangeØ 27 mm (1.06")

D

d

I

t

d = distance min 25 mm (1")D = acces port size min 48 mm (1.89")

UNIT: mm (inch)

DIMENSIONS INSTALLATION INSTRUCTIONSBULK-HEAD MOUNTING

distance min. 25 mm (1)access port side min 48 mm (1.89)

hole in flangeø 27 (1.06)

thermistor

secondary

primary

ground

Wrench opening20 (0.79)Wrench opening

32 (1.42)ø 40 (1.57)

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3-2. Wiring

3-2-1. Grounding

3-2-1-1. Grounding the tranmitter housingFor best protection against interference theoutside earth terminal should be connectedto site ground by a large area conductor.The grounding of the transmitter housingalso ensures the low level of EM emission.

3-2-2. Grounding the liquidDouble insulation of the sensor preventselectrical contact between liquid, processpiping and transmitter. Unintentional groundloops are prevented this way.

3-2-3. Wiring the sensorThe sensor cable transmits low voltage, highfrequency signals and should be installedseperately from any high voltage, highcur-rent and/or power switching cables. This isto avoid any unintentional cross talk or otherkind of interference of the Conductivitymeasurement.

3-2-3-1. Connecting the sensor cable tothe transmitter

1. To access terminals remove the frontcover of the EXA IC200 by releasing the4 captive screws.

2. Loosen the cable gland and pull thecable in the connection compartment.

3. The sensor leads are numbered and theleads must be connected to the termi-nals with the corresponding number:– the temperature compensator with

11/12;– the drive coil with 15/16;– the receive coil with 13/17.Terminal 14 is for connection of theshield.

4. Screw the cable gland tight to ensureIP65 (NEMA 4) environmental protection.An optional protection hose (flexibleconduit) is available for additional mecha-nical protection of the sensor cable.

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3-2-4-1. General precautionsDo not activate the power supply yet.First make sure that the DC-power supply isaccording to the specifications given.WARNING: DO NOT USE ALTERNATINGCURRENT OR MAINS POWER SUPPLY!!The cable leading to the distributor (powersupply) or safety barrier transports power toand output signal from the transmitter. Use atwo conductor shielded cable with a size ofat least 1.25 mm2 and an outside diameterof 9 to 15 mm. The cable gland suppliedwith the instrument accepts these diame-ters. The maximum length of the cable is2000 meters. This ensures the minimumoperating voltage for the instrument.

3-2-4-2. Additional precautions forinstallation in hazardous areas

– Ensure that the total of capacitances andinductances connected to the terminalsof the EXA IC200 do not exceed thelimits given in the certificate of the safetybarrier or distributor.

– The cable used should preferably have aBLUE colour or marking on the outside.

– Grounding:• If the transmitter is mounted on a groun-

ded surface (e.g. a metal frame fixed inthe soil) the shield of the 2-wire cable

may NOT be connected to ground at thedistributor.

• If the transmitter is mounted on a non-conducting surface (e.g. a brick wall) it isrecommended to ground the shield ofthe 2-wire cable at the distributor end.

Installation for EEx is (sensors in Zone 0 or1):Generally, the distributor with input/outputisolation has no external earth connection.If there is an earth connection on the distri-butor and the external connection of thetransmitter is connected to “protective”earth, the shield of the 2-wire cable mayNOT be connected to “protective” earth atthe distributor too.

3-3. Access to terminal and cable entryThe terminal strip si accessed by removingthe cover from the transmitter as wasdescribed in §3-2-3.Use the left-hand gland to insert the 2-wirecable to the transmitter.Connect the supply to the terminals marked+,- and G as in indicated in the figures onpage 10 & 11.

3-3-1. Switching on the instrumentAfter all connections are made and chec-ked, the power can be switched on from thedistributor. Observe the correct activation ofthe instrument at the display.If for any reason the display does not indicate a value, consult the trouble shootingsection.

3-2-4. Wring the power supply

Note: This transmitter is for low voltage DC power supply only. Serious damage canresult if the transmitter is connected to mains AC power supply.

IM 12D8B2-E-H

10

1200

1000

800

600

400

200

0 1718 20 24 40

Ohm

550

Supply voltage (Volt)

Load

res

ista

nce

(Ω)

Fig. 6. Dependance of load to supplyvoltage

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11

Protectiveearth

+

_

SE

NS

OR

(S)

GENERAL PURPOSETRANSMITTER EXA IC200G

NOTE: The outside earth terminal should be connected to site ground by a large area conductor (e.g. a flat earthstrip) for best protection against interference

+_

SU

PP

LYO

UTP

UT

DISTRIBUTOR

GENERAL PURPOSE DESIGN

CONNECTION DIAGRAM FOR SUPPLY POWER

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12

+

_

SE

NS

OR

(S)

INTRINSICALLY SAFE DESIGNTRANSMITTER EXA IC200S

+_

SU

PP

LYO

UTP

UT

DISTRIBUTOR

Zone 0 of 1 Zone 1

Hazardous area Safe area

Protectiveearth

EEx ibCertified distributor withinput/output isolation

Shunt zener bar-rier output cur-rent by resistorVmax : 28 VImax : 93,3 mAPmax : 0,66 W

INTRINSICALLY SAFE DESIGNEEX ib [ia] IIC T4...T6<Ex> II 2 (1)G

CONNECTION DIAGRAM FOR SUPPLY POWER

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CONNECTION DIAGRAM FOR SUPPLY POWER

+

_

SE

NS

OR

(S)

INTRINSICALLY SAFE DESIGNTRANSMITTER EXA IC200S

+_

SU

PP

LYO

UTP

UT

DISTRIBUTOR

Zone 0 of 1 Zone 1

Hazardous area Safe area

Protectiveearth

EEx ibCertified distributor withinput/output isolation

Shunt zenerbarrier of sup-ply unit or isolated repe-aterVmax : 21 VImax : 85 mA

INTRINSICALLY SAFE DESIGNEEX ib [ia] IIC T4...T6<Ex> II 2 (1)G

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4. START-UP

IM 12D8B2-E-H

The EXA IC200 transmitter offers extremeflexibility to enable the user to have onehardware version for a multitude of differentapplications.

The software has been programmed for a“general applicaton”. It will be necessary forthe user to perform some easy programmingto fingerprint the transmitter to the particularapplication.

Although programming itself is easy, a goodpreparation is necessary. This chapter willassist the user in recognizing the superbflexibility of the transmitters and getting themost out of it.

4-1. The DISPLAY functions

4-1-1. The primary displayThe primary display is a 3 1/2 digit displaythat indicates the measured value. It is alsoused to display the variables that can beadjusted in the different programming steps.Generally, the “SHIFT” (>) key changes thedigit that can be changed with the “UP” ( )key. This digit is flashing at the same time.When the period is flashing, the “UP” key willadjust the value with a factor 10.

NOTES:1. The display indicated ineither µS/cm or in

mS/cm (= 1000 µS/cm).Make suer that the correct unit is shownduring range adjustments.

2. If the prompt flag is flasing and no digitnor period is flashing, then the “UP” keywill present the “1” and allows user tochange form 3 to 4 digits value.

4-1-2. The secondary displayThe secondary display is a “message” dis-play. It will indicate a description of thevariable that can be adjusted during pro-gramming, it allows to display a secondvariable during normal measurement (tempe-rature, mA output, % concentration, referen-ce temperature, temperature coefficient)and, if relevant, it will display error codes.

4-1-3. AnnunciatorsThe custom made display will also showrelevant messages as shown on the insidecover of this manual.

4-2. The OUTPUT functionsThe following ouput functions are possible:

4-2-1 Output linear to conductivityThis is the most common output functionand it is described in section 6-1 : “Adjustingthe output range”.

4-2-2 Output linear to concentrationWhen the conductivity system is used asconcentration analyser, the IC200 can beprogrammed to have the output current line-ar to concentration. This is described in sec-tion 7-4 : “Output table for non-linear range”.This concentration can be read in % o theLCD message display as well. This is descri-bed in section 7-9 : “Percent by weight indi-cation on second line display”.

14

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4-3. The temperature compensationThe factory adjustment for automatic tempe-rature compensation is the standardizedNaCl algorithm according to IEC 746-3.For concentrated electrolytes this may notbe accurately compensate for process tem-perature variations.

With the IC200 the user has 4 methods tooptimalise the temperature compensation:

4-3-1. Field calibration of (linear) tempe-ratuur compensation

The procedure is described under section 6-3.

4-3-2. Programming of calculated tem-peratuur coefficient

This procedure is described in section 7-10.

4-3-3. Selection of preprogrammedelectrolyte solutions

For Sulfuric Acid, Nitric Acid, HydrochloricAcid and Sodium Hydroxide Yokogawa hasdefined standard ranges (see section 7-11).

4-3-4. Programming of complex non-linear, conductivity dependenttemperature coefficients

Using an easy 5x5 matrix structure. Thisprocedure is described in section 7-12.

4-4. The calibrationThe factory calibration of the IC200 allowsthe user to install the system without theneed for calibration. In specific situationscalibration may be necessary for high accur-acy.

4-4-1. Air calibration/Air setEvery (new) IC200/ISC40 combination hasto be paired prior to installation of the sensorin process. This is necessary to activate the‘conductivity low (E6)’ diagnostic function(refer to §8-6).Further the ‘Air Set’ routine enhances theaccuracy of the measurement at very lowconductivity values.This procedure can be found in section 6-4.

4-4-2. Grab sample calibrationUsing an accurate reference standard suchas the Yokogawa Model SC82 PersonalPocket Conductivity Analyser, the user canperform a 1 point calibration according tothe instructions in section 5-1.

15

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1. Access calibration routine

CALIB = Calibration

2. Adjust value

START = Start calibration

Adjust process value to perviously determi-ned value (e.g. from hand-held conductivity-meter)

3. End calibration

CAL.END= End of calibration session

Access maintenance code Confirm start of adjustment

Select manual calibrationMove pointer to cal

Select calibrationSelect digit to adjust

Adjust value

Confirm adjusted value

End calibrationEnd calibration and return tomeasurementContinue routine to calibratesecond point (repeat step 2)

5. CONFIGURATION IN MAINTENANCE MODE

5-1.Grab sample calibration

YES

YES

ENT

^

>

YES

NO

NO

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16

ESCAPE TO MEASURE can be used at any stage to abort operation. WARNING: If the HOLD function is activated the instrumentreturns with the question HOLD (flashing); answer YES or NO or MODE again to return to measurement.

MODE

MODE

M E A S U R EC A LD I S P L AY.H O L D

YES NO

YES NO

MODE

µS/cmMODE

.

M E A S U R EC A LD I S P L AY.H O L D

YES NO

ENT

µS/cmMODE

M E A S U R EC A LD I S P L AY.H O L D

YES NO

YES NO

MODE

µS/cmMODE

.

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1. When is calibration necessary?

Calibration of conductivity instruments is not normally required since conductivity cells aremanufactured within controlled toleranceand do not alter in use.

If the cell has been severely fouled or sub-ject to abrasion (possibly during cleaning) itmay be necessary to calibrate.

Alternatively calibration may be carried outwith a simulator to check the electronicsonly.

Since the IC200/ISC40 inductive conductivi-ty system measures the conductivity of the“liquid winding” through the donut, part ofthis “measuring cell” is outside the donut. IFthere is little space between donut and pro-cess piping, grab sample calibration isnecessary for high accurate measurement.

2. How is calibration done?Calibration is carried out by measuring asolution which has a known conductivity andadjusting the instrument to show the correctconductivity value.

Calibration solution can be made up in thelaboratory. A solution of salt is made withprecise concentrations. Temperature is sta-bilised to the reference temperature of theinstrument (usually 25°C). The conductivityof the solution is taken from tables.

Alternatively the instrument may be calibra-ted in an unspecified solution against a stan-dard instrument. Here care should be takento make measurement at the reference tem-perature since differences in the type of tem-perature compensation of the instrumentsmay cause an error.

The grab sample calibration method is themost easy way to calibrate the IC200 trans-mitter. Since the sensor si immersed in theprocess, errors caused by installation char-acteristics are compensated for.

NOTE: The standard instrument used asreference method must be accurate.Yokogawa recommends to use the ModelSC82 pocket conductivity meter for this pur-pose.

3. Typicl calibration solutionsThe table below shows typical conductivityvalues for solutions which may be made upin the laboratory.

Table for NaCl at 25°C

17

5-1. Grab sample calibration

Weight % mg/kg Conductivity

0.001 10 21.4 µS/cm0.003 30 64.0 µS/cm0.005 50 106 µS/cm0.01 100 210 µS/cm0.03 300 617 µS/cm0.05 500 1.03 mS/cm0.1 1000 1.99 mS/cm0.3 3000 5.69 mS/cm0.5 5000 9.48 mS/cm1 10000 17.6 mS/cm3 30000 48.6 mS/cm5 50000 81.0 mS/cm10 100000 140 mS/cm

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1. Access display routine

DISP =DISPLAY routine.

2. Read data

The second line of the display will show thepossibilities

3. Wijziging van de parameter

The second line of the display will show thepossibilities

Reprogram data displayMove to desired value for displayParameter Unit-Temperature °C/°F-Output signal mA/V-% by weight %

IF -Installation factor cm-1

T.R. -Reference temperature °C/°FNaCl/kkk -Temperature

-Compensation coefficientstandard manual %/°C

REL -Software releaseTo select a value for permanentdisplay during measurement

Select displayMove pointer to display

Select Display routine

Select displayTo read values onlyParameter Unit-Temperature °C/°F-Output signal mA/V-% by weight %

IF -Installation factor cm-1

T.R. -Reference temperature °C/°FNaCl/ -Temperature

-Compensation coefficientstandard manual %/°C

REL -Software release

Return to measure

5-2. Selecting a value to display

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18

M E A S U R EC A LD I S P L AY.H O L D

YES NO

YES NO

MODE

MODE

.M E A S U R EC A LD I S P L AY.H O L D

YES NO

YES NO

MODE

MODE

.

YES

NO

NO NO

YESMODE

M E A S U R EC A LD I S P L AY.H O L D

YES NO

YES NO

MODE

MODE

Access maintenance modeMODE

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1. What is the display routine?The second line in the display is intended tobe used to:- Show actual status- Show messages- Show errors

When delivered from the factory the EXAIC200 shows the temperature on thesecond line.

You can make the instrument show a diffe-rent parameter on the second line by selec-ting it from the list at right.

2. What can you read?Temperature : is an actual valueOutput : is an actual valuePercent by weight : is an actual valueInstallation factor : is programmedReference temperature : is programmedNaCl or temperature coefficient : is programmed

The choice of temperature units is donefrom the Service label.

Error messages have priority over othermessages.

NOTE: Percent by weight si only visiblewhen activated fro the service level §7-10.

3. ExampleTo check the value of the output signal(4...20 mA it is displayed on the second line.

Measuring range : 0 - 100 µS/cmOutput signal : 4 - 20 mA

Process value : 60 µS/cmOutput value : 13,6 mA

When the second line is changed to displayoutput the current signal is visible all thetime.

Whenever HOLD is activated the value onthe display is frozen to the programmedvalue (using the FIXED setting).

Pressing MODE will take you back tomeasuring and the temperature will showagain.

19

5-2. Selecting a value to display

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1. Access hold

HOLD = Hold output function

NOTE: This function can only be used if acti-vated during commissiong (see chapter 6-2).

2. Switch HOLD on/off

Display will blink HOLD and YES/NO

HOLD in left top of display is switchedSelect HOLD functionMove pointer to HOLD

Select HOLD

Switch hold OFF

Switch hold ON

Access maintenance mode

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5-3. Use of the HOLD function

M E A S U R EC A LD I S P L AY.H O L D

YES NO

YES NO

MODE

MODEHOLD

M E A S U R EC A LD I S P L AY.H O L D

YES NO

YES NO

MODE

MODE

MODE

NO

YES

NO

YES

ESCAPE TO MEASUREMENT can be used at any stage to abort operation. WARNING: If the HOLD function is activated the ins-trument returns with the question HOLD (flashing); answer YES or NO or MODE again to return to measurement.

MODE

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21

1. What is HOLD?

Hold is a function which freezes the outputsignal temporarily, it is normally used duringmaintenance when the cell is removed fromthe measured solution to prevent unwantedcontroller reaction.

The HOLD function must be commissionedfrom the programming menu before it canbe switched on or off. See commissioningthe hold function for more details.

NOTE: AUTO RETURN will switch off HOLDafter 20 minutes, see §7-6.

2. How does it work?

From this level the HOLD function cn only beswitched ON or OFF.

HOLD is switched on when you press YESwhen HOLD and YES/NO are blinking.When you press NO hold will be switchedoff.

A flag is kept in memory and an indication ismade in the upper left corner of the displayfield.

The HOLD function only influences the out-put signal, no other functions are influenced.

The operator is prompted to switch HOLDon or off after having performed a mainte-nance function.

3. Example

During the transfer of cleaning liquid into abatch reactor with a conductivity-controlsystem, the HOLD function is switched ONto prevent the controlling instruments formrunning wild.

After cleaning has ceased and the newbatch has been started HOLD is switchedOFF again and conductivity control resumes.

5-3. Use of the HOLD function

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1. Access range

Remove cover by releasing 4 screws

NOTE: If the range is commissioned to bevia a table this whole item will be skipped!Default is 0-1000 mS/cm linear range.

2. Instellen van de beginschaalwaarde

Display will show *0%

3. Adjust high span value

Display will show *100%

Access Commissioning menu Adjust value for low spanSelect digit to adjust or decimalpoint and unitsAdjust digit

Confirm adjusted value

Adjust value for high spanSelect digit to adjust or decimalpoint unitsAdjust digit

Confirm adjusted value

Return to measurement

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22

6. Configuration in commissioning mode6-1. Output range adjustment

EN T

µS/cm

ENT

RANGESET HOLDTEMPERATUREAIRSETSERVICE

EN T

mS/cm

ENT

RANGESET HOLDTEMPERATUREAIRSETSERVICE

RANGESET HOLDTEMPERATUREAIRSETSERVICE

YES NO

YES NO

MODE *

*

Select output functionSelect OUTPUT

YESENT

>

^

ENT

*

>

^

ESCAPE TO MEASUREMENT can be used at any stage to abory operation. WARNING: If the HOLD function is activated the ins-trument returns with the question HOLD (flashing); answer YES or NO or MODE again to return to measurement.

MODE

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23

6-1. Output range adjustment

1. What is the output range?

The default value of the software defines theouput range of 4-20 mA = 0-1000 mS/cm.

The display will always show the full range ofthe instrument from 0-2000 mS/cm.Maximum resolution is assured by auto-ranging, where the position of the decimalpoint and the measuring units(microSiemens/milliSiemens) are moved tobest fit the actual value.

For control or recording the current outputcan be ranged to a specific part of the totalmeasuring span.

Linear ranges can be programmed in thisroutine. It is also possible to program nonlinear output ranges for specific applications.These are programmed in the service level,see sections 7-3 and 7-4.

2. Programming a linear output range

A linear output range is programmed byentering two values:- 0% the conductivity at the start of the

output range which corresponds to4 mA

- 100% the conductivity at the end of theoutput range which corresponds to20 mA.

When programming a range which does notstart at zero conductivity, take care torespect the minimum value corresponding to≤ 90% of the maximum value.

3. ExampleRange: 10-100 mS/cm

Default:0% = 00.0 µS/cmPush ^ to change to10.0 µS/cmPush > 3 times to 10.0 µS/cmPush ^ 4 times 10.0 mS/cmPush ENT

Default:100% = 1000 mS/cmPush > 3 times to 100.0 mS/cmPush ^ 7 times to 100.0 mS/cmPush ENT

shows flashing

4. Related functions

The EXA IC200 has an output table whichcan be programmed to give any non-linearoutput characteristic. Activation of this tableis described in §7-3. Once the table is acti-vated the linear OUTPUT routine will no lon-ger have any effect and will not be accesiblein the commissioning menu.

Programming of the 21 step table is descri-bed in §7-4.

The non-linear output can be used to followa concentration curve for a specific product.Care must be taken to ensure that the tem-perature compensation is also set up for themeasured fluid under representative condi-tions. It should also be noted that conducti-vity measurements are not specific, so it canbe influenced by impurities present or chan-ges in the fluid composition.

Programming a percent by weight indicationon the second display line §7-9.

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1. Acces HOLD routine

*HOLD= Set HOLD function

2. Activate HOLD function

Display shows actual status*H.OFF = Hold not active*H.ON = Hold activated

*H.FIX = Hold fixed value*H.LST = Hold last value

3. Adjust value to HOLD

Display shows current

Select SET HOLDMove pointers to SET HOLD

SELECT choice

Access commissioning menu

6-2. Set up HOLD function

IM 12D8B2-E-H

24

YES NO

YES NO

MODE

.

*

RANGESET HOLDTEMPERATUREAIRSETSERVICE

EN T

ENT

HOLD

.RANGESET HOLDTEMPERATUREAIRSETSERVICE

YES NO

YES NO

MODE

.

*

RANGESET HOLDTEMPERATUREAIRSETSERVICE

*

NO

YES

Activate (de-activate) HOLDChange setting

Confirm setting

NO

YES

Select HOLD fixed or lastChange selection

Confirm selection

NO

YES

ESCAPE TO MEASURE can be used at any stage to abort operation. WARNING: If the HOLD function is activated the instrumentreturns with the question HOLD (flashing); answer YES or NO or MODE again to return to measurement.

MODE

Ajust fixed valueSelect digit to adjust

Adjust value of digit

Accept value

Return to measurement

ENT

*

>

^

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6-2. Set up HOLD function

1. What is HOLD?

HOLD is a function freezing the output signaltemporary, during normal maintenance, pre-venting unintended alarm or control actionsto occur.

Two possibilities are generally used:Keeping the output at the LAST valuejust before the start of maintenance.This can only be used when a recorderis connected.Keep the output at a preset FIXED valueswitch will not cause any of the alarmsto go off or any controlling action to betaken. This is the preferred situationwhen dealing with Conductivity-controlsystems.

Default "OFF".

2. How does it work?

The HOLD-function has to be activated fromthe *-menu before it can be used.

The EXA IC200 will keep the output frozenduring the following events:- Access to the *-menu.- Access to the calibration mode.- Switching it from the MODE-menu.

HOLD is signalled in the display by a specialfield.

The operator is prompted to switch HOLDon or off before returning to normal meas-urement.

3. Application

In a storage tank the concentration of sodi-um hydroxide (caustic soda) has to be keptat 5%. The mixing process is controlled by aconductivity transmitter and electromagneticvalves.

During maintenance of the conductivity cellor the transmitter the HOLD function is acti-vated to keep the mixing process form was-ting precious chemicals to the sewer.

The HOLD function is set for a fixed outputso that the dosing valves will not be activa-ted.

4. Time out

Hold will be de-activated after 20 minutes ifno key is pressed. To cancel this functionsee 7-6.

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6-3. Temperature compensation

26

1. Access temperature compensationroutine

TEMP. = Temperature compensation function

Default is “NaCl”

2. Select standard or manually set temperature compensation

NaCl = Standard temperature compensationT.C. = Manually set temperature compen-

sation factor

NOTE: If NaCl is chosen the temperaturecompensation will be according to NaClsolutions.

3. If TC is selected set the temperaturecompensation coefficient

The setting of the temperature coefficient isdone by adjustment a conductivity value, atprocess temperature, to the conductivityvalue that was measured at reference tem-perature

Erro E2 indicates that the temperature coef-ficient is less than -10%/0C of more than+10%/0C.

NOTE: Direct setting of the compensationfactor is possible. Refer to §7-11.

YES NO

YES NO

MODE *

RANGESET HOLDTEMPERATUREAIRSETSERVICE

EN T

ENT. .

mS/cm

RANGESET HOLDTEMPERATUREAIRSETSERVICE

YES NO

YES NO

MODE *

RANGESET HOLDTEMPERATUREAIRSETSERVICE

ESCAPE TO MEASURE can be used at any stage to abort operation. WARNING:If the HOLD function is activated the instrument returns with the question HOLD(flashing); answer YES or NO or MODE again to return to measurement.

MODE

Select temperature compensa-tion routineMove pointer to TEMPERATURE

Select temperature compensa-tion funciton

Access the maintenance menuSelect NaCl/TC compensationChange displayed selection

Confirm selectionInstellen van de temperatuurcom-pensatieKies de in te stellen positie

Stel de waarde in

Bevestig de instelling

*

NO

YES

NO

YES

ENT

>

^

IM 12D8B2-E-H

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27

6-3. Temperature compensation

1. Why temperature compensationnecessary?

The conductivity of a solution is very stronglyinfluenced by temperature. Typically for every1°C change in temperature the solution con-ductivity will change by approximately 2%.

The effect of temperature varies from onesolution to another and is determined byseveral factors: solution composition, con-centration and temperature range.

A coefficient (a) is used to express theamount of temperature influence in % chan-ge in conductivity/°C.

In almost all applications this temperatureinfluence must be compensated before theconductivity reading can be interpreted asan accurate measure of concentration orpurity.

2. Standard temperature compensationwith EXA IC200

From the factory EXA IC200 instruments arecalibrated with a general temperature com-pensation function based on a sodium chlo-ride salt solution. This is suitable for manyapplications and is compatible with the com-pensation functions of typical laboratory orportbale instruments.

NaCl compensation according IEC 746-3with Tref = 25 °C

A temperature compensation factor is deri-ved from the following equation:

Kt-Kref 100a = xT-Tref Kref

a = Temperature compensation factor (in%/°C)

T = Measured temperature (in °C)Kt = Conductivity at TTref = Reference temperature (25 °C)Kref= Conductivity at Tref

3. Manual setting of temperature com-pensation with EXA IC200

If general compensation function is found tobe inaccurate for the sample in question, theinstrument can be set manually for a linearfactor on site to match the application.

The procedure is as follows:1. Take a representative sample of the pro-

cess liquid during operation.2. Heat or cool this sample to the referen-

ce temperature of the instrument (usually25 °C). Note: see §7-2.

3. Measure the conductivity of the solutionwith the IC200 and note the reading ofthe display.

4. Bring the sample to the typical processtemperature. (Check the temperaturewith the display routine).

5. Adjust the reading of the display to thepreviously noted value at the referencetemperature.

6. Check that the temperature compensa-tion factor has been changed (from thedisplay routine).

7. Insert the conductivity cell into the pro-cess again.

4. Other possibilities1. Enter caluculated temperature coeffi-

cient §7-10.2. Enter matrix temperature compensation

§7-11 and §7-12.

T Kt a T Kt a T Kt a0 0.54 1.8 60 1.76 2.2 130 3.34 2.210 0.72 1.9 70 1.99 2.2 140 3.56 2.220 0.90 2.0 80 2.22 2.2 150 3.79 2.225 1.0 --- 90 2.45 2.230 1.10 2.0 100 2.68 2.240 1.31 2.0 110 2.90 2.250 1.53 2.1 120 3.12 2.2

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1. Access AIR SET routine 2. Activate AIR SET function

Display shows actual status

3. Adjust value

Display shows calibrated zero

NOTE: If the sensor cannot be accuratelycalibrated E9 will be displayed.

Activate AIR SETStart calibration

Select AIR SETMove pointer to AIR SET

Select choice

6-4 AIR SET

IM 12D8B2-E-H

28

YES NO

YES NO

MODE *

RANGESET HOLDTEMPERATUREAIRSETSERVICE

YES NO

*

RANGESET HOLDTEMPERATUREAIRSETSERVICE

HOLD

EN TYES NO

YES NO

MODE *

RANGESET HOLDTEMPERATUREAIRSETSERVICE

NO

YES

YESRepeat calibration

Confirm calibrationYES

NO

ESCAPE TO MEASURE can be used at any stage to abort operation. WARNING: If the HOLD function is activated the instrumentreturns with the question HOLD (flashing); answer YES or NO or MODE again to return to measurment.

MODE

Access commissioning menu*

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29

6-4. AIR SET

1. What is AIR SET procedure?

The AIR SET procedure is a routine to com-pensate for the small zero current being theresult of the combination sensor, cabling andtransmitter by inductive coupling other thancaused by the process.

2. When is an AIR SET procedure neces-sary?

AIR SET is done only once during Start-Up,and when a new sensor is connected to atransmitter. This procedure is necessary toactivate the ‘conductivity too low’/Error mes-sage E6 diagnostic function (refer to §8-6).

If the user wants to make full use of the sys-tems capabilities and requires accuratemeasurement down to 1 µS/cm, this simpleroutine will optimise the performance.

3. How is the AIR SET procedure done?

- Prepare the whole installation as descri-bed in section 3.

- Wait to install the sensor in the process,since AIR SET has to be done with a drysensor.

- Make sure that the sensor is in an EMIand RFI free environment.

- Press “*” and 3 times “NO” until “AIR” isindicated in the display.

- Press “YES” and after indication“START”, press “YES” again.

- Press “YES” after the indication “CAL-END”.

- End of routine.

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7. CONFIGURATION IN SERVICE MODE

IM 12D8B2-E-H

30

IntroductionGenerally speaking there is no necessity toadjust the settings of the service section. Allparameters are pre-programmed to values(so-called defaults) enabling you to startworking immediatly.

The advanced functions available throughthis section are only needed in some specificapplications. This fine-tuning of the instru-ment gives a superior performance overconventional 2-wire instruments.

If a function has to be adjusted it is called-up with the code mentioned. Having selec-ted the code then gives you the possibility toeither activate or adjust the values for thisfunction. After this you will return to the entrypoint to make other adjustments or go backto the measuring status.

If errors are made during the programmingprocess, these will be indicated, no actionwill be taken and you can start the program-ming again.

Code Routine Use Section

01 Temperature units °C or °F display 7-102 Reference temperature Only if other than 25°C 7-203 Output function For non-linear output 7-304 Output tablel For non-linear output 7-405 Installation factor During Start-up 7-506 Auto return function To keep HOLD unlimited 7-608 Temperature adjustment For minor adjustments 7-709 Signaling of FAIL For 22 mA during FAIL 7-810 Weight % on display To read concentration

units directly 7-911 Temperature Coefficient Other fluids than

NaCl 7-1012 Matrix Temp Comp Comples processes 7-11

Selected Electrolytes13-18 Matrix Temp. Comp. 7-12

user programmable19 Enable/disable function E6 inactive/active 7-1320 “soft” or “hard” fail Selection between

“soft” or “hard” fail 7-1433 Passcode Protection of software 7-1555 Restore Default settings If programming errors are made 7-16

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1. Access service

*SERV = Service settings

2. Enter code to select required function

Display will show *CODE

3. Adjust setting(see individual routines)

Display shows current setting

Values adjusted access to individual routinedescriptionEnter access code to select routine

Select digit to adjust

Adjust code for entry

Confirm choice

Adjust settings

Select digit to adjust

Adjust value

Confirm adjusted value

Return to measure

IM 12D8B2-E-H

31

7-0. Access to service setting

O U T P U TS E T H O L DT E M P .S E R V I C E

EN T

ENT

O U T P U TS E T H O L DT E M P .S E R V I C E

EN T

ENT

.

.OUTPUTSET HOLDTEMPERATURESERVICE

YES NO

YES NO

MODE *

>

ENT

^>

^

ENT

MODE

Select service functionMove pointer to service

Select SERVICE

NO

YES

ESCAPE TO MEASURE can be used at any stage to abort operation. WARNING: If the HOLD function is activated the instrumentreturns with the question HOLD (flashing); answer YES or NO or MODE again to return to measurment.

MODE

Access commissioning menu*

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7-1. Temperature unitsACCESS CODE : 01 (see §7-0)

(see §7-0 for operation)DISPLAY : *T.UNIT

Adjustment : (X.X)Explanation:The code for the temperature units determi-nes the temperature indication on the dis-play only.

Default : °C

7-2 Reference temperatureACCESS CODE : 0.2

(see §7-0 for operation)DISPLAY : *T.R. °C or *T.R.°FAdjustment: Adjust the value for the referen-ce temperature used in the calculations.Normally this value will be25°C.

Explanation:All measured values are compensated fortemperature to refer to comparable values at25 °C. This temperature is easily producedat laboratory conditions and most literaturedata use this temperature.In exceptional cases it is possible to use adifferent reference temperature in combina-tion with a programmed temperature coeffi-cient (e.g. Sulfuric acid measurement).

Default : 25°C

7-3. Output tableACCESS CODE : 03

(see §7-0 for operation)DISPLAY : *TABLE

Adjustment : 0 = Linear range1 = Output table with

21 steps

Explanation:As a default, a linear output is set and only0% and 100% can be adjusted form thecommissioning output function.When an output table is programmed bysetting a 1, the table can be programmed atCODE 04.Otherwise CODE 04 will have no effect. See the entry at the next CODE.

X.XX.0 Temperature displayed in °CX.1 Temperature displayed in °F

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7-4. Output tableACCESS CODE : 03 (see NOTE)

(see §7-0 for operation)DISPLAY : 0% to 100%

Adjustment:A 21 step table can be programmed fromthis entry ONLY IF it was set in the previousCODE 03. It is possible to set up a linearoutput to concentration units.

NOTE:Access to code 04 is only possible if “1” isprogrammed in code 03.

Other possibilities: Programming “% byweight” indication on second display line:refer to §7-10.

Explanation:

The procedure will be explained using theexample of the range 0-25% Sulfuric Acid.Reference temperature is 25°C (see literatu-re for conductivity curves at 25°C).1. Define minimum value

(0% Sulfuric Acid = 0 mS/cm).2. Define maximum value

(25% Sulfuric Acid = 791 mS/cm)3. Divide range by 20 and calculate the

conductivity value for each point (each

point is 25/20 = 1.25% by wt).4. Fill in the table.

NOTE:Sometimes not all 21 values are known. Ifan unknown value is prompted, press “NO”.The transmitter will step to NEXT value andfind the unknown point by interpolation.

Uitgang lineair met concentratieVoorbeeld 0-25% Zwavelzuur

0 2 4 6 8 10 12 14 16 18 20 22 240

200

400

600

800

1000 100

80

60

40

20

0

Geleidendheid (mS/cm) Uitgang in %

Concentratie (gewichtsprocenten)

Geleidendheid

% Uitgang

Code mA Concentratie Voorbeeld Geleidendheid Voorbeeld% Uitgang

0 4 0 05 4.8 1.25 60

10 5.6 2.5 11315 6.4 3.75 18020 7.2 5 21125 8 6.25 29030 8.8 7.5 33535 9.6 8.75 38340 10.4 10 42445 11.2 11.25 46650 12 12.5 51555 12,8 13.75 55560 13.6 15 59065 14.4 16.25 62570 15.2 17.5 65575 16 18.75 68580 16.8 20 71885 17.6 21.25 73590 18.4 22.5 75595 19.2 23.75 775

100 20 25 791

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7-5. Installation factor adjustment

ACCESS CODE : 05(see §7-0 for operation)

DISPLAY :*I.F

Adjustment:Adjust the ration between the measuredconductance of the sensor and the specificconductivity of the solution

INSTALLATION FACTORAs function of free distance around Donut

Explanation:

The Installation factor for the ISC40 is theratio between the measured conductance ofthe sensor and the specific conductivity ofthe solution. The unit is /cm just as the cellconstant of the contact electrode conductivi-ty sensors. This factor is 1.88 cm for theISC40 sensor if installed with a minimum of25 mm of process fluid around the donut.

Installed in stainless steel flow fitting, ModelISC40FF-S, the factor for ISC40 is 1.7. Installed in a PP or PVDF flow fitting, ModelISC40FF-P or F, the factor is 1.88.The factor is a function of the distancebetween sensor and the surrounding pipingand is given in the figure below.

Default : 1.88cm

7-6. Auto return function

ACCESS CODE : 06(see §7-0 for operation)

DISPLAY : *RET

Adjustment : 0 = OFF/1 = ONAutomatic return tomeasure after 10minutes

Explanation:As a safeguard against long maintenancejobs or inadvertently pushing a button it ispossible to let the system return to its nor-mal function of measurement when no keysare pushed for 20 minutes.

Default : Auto return on

D

non conductivepiping

conductivepiping

INS

TA

LLA

TIO

N F

AC

TO

R in

cm

D i n m i l l i m e t e r s

0 10 20 30 40 50

2.4

2.3

2.2

2.1

2.0

1.9

1.8

1.7

1.6

1.88

-1

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7-7. Temperature sensor adjustmentACCESS CODE : 08

(see §7-0 for operation)DISPLAY : *T.ADJ

Adjustment:Adjust the value of the indicated temperatu-re °C/°F to that of the actual temperature.

Explanation:It is possible to adjust the temperature rea-ding of the IC200 with 0.5 °C. It might beopportune to make the temperature readingof the IC200 match with another (reference)temperature reading device.Check the temperature indicated and adjustthe value if necessary.Now the EXA transmitter has been calibra-ted to compensate for the cable resistance.

7-8. Signalling of fail conditionACCESS CODE : 09

(see §7-0 for operation)DISPLAY : *BURN

Adjustment : 0 = OFF1 = ON 22 mA steady

signal of fault2 = ON 22 mA pulse

during 30s at startof fault then nor-mal output

Explanation:Besides an indication at the display in thefield, sometimes an indication of errors in thecontrol room is also necessary. This is possi-ble by sending a special signal over the 2-wire connection to the receiving instrument.A signal of 22 mA si used, because it isoutside the normal analogue range of 4 to20 mA. If at the receiving end an alarm is settothe value represented by 22 mA, it isobvious that the proper action can be takenfrom the control room too.The signal uses the same convention asused in thermocouple indication for detec-ting break of the sensor (burn out).

Default : 0 = OFF

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7-9. Weight % on second display lineACCESS CODE : 10

(see §7-0 for operation)NOTE : This routine is useful

only if in code 04 bythe output range ismode linear to weight%

DISPLAY : *%

Adjustment : 0 = OFF/1 = ONSelect the possible todisplay % by weighton the second displayline. When % indica-tion is activated(Select 1) the displayrange can be adjus-ted:* 0%: Adjust lowspan display value*100%: Adjust highspan display value

Explanation:In case a conductivity measurment is usedfor concentration monitoring it can be convi-nient to link the measured conductivity valueto a % by weight concentration by value. Alinear concentration indication in % units isprogrammed by entering two values.

- X in 3 digits corresponds to 0% of theoutput value (=4 mA)

- Y in 3 digits corresponds to 100% of theoutput value (=20 mA)

Example:0% output is 93.0% by weight

100% output is 99.0% by weight

The instrument uses interpolation betweenthe entered values. As the relation betweenpercent by weight concentration and con-ductivity is not linear in most cases, the pos-siblity to linearize the ouput to concentrationunits can be used. Refer to §7-3 and §7-4.The instrument becomes a concentrationmeter by output function and (second) dis-play (line) based on a conductivity measure-ment.

Default : 0 = UIT

7-10. Temperature coefficient

ACCESS CODE : 11(see §7-0 for operation)

DISPLAY : *T.C.

Adjustment : Adjust the value of thecompensation (a).

Explanation:In addition to the procedure described in §6-3 it is possible to adjust the compensationfactor of the sample liquid if the compensa-tion factor is known form laboratory experi-ments or has been previously determined, itcan be introduced here.Adjust the value between -10.00 to+10.00% per °C. In combination with thereference temperature setting at (§7-2) alinear compensation function is obtained,suitable for all kinds of chemical solutions.

Default: skipped, compensation for NaCl isstandard.

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SULFURIC ACIDTemperature Coefficient

Kt-Kref 100a = xT-Tref Kref

7-11. Selection of standard electrolytesACCESS CODE : 12

(see §7-0 for operation)DISPLAY : *MATRXAdjustments : X

Explanation:For convenience, Yokogawa has alreadyprogrammed some common electrolytes,where sophisticated temperature compensa-tion is required for accurate process control.

NOTE: Select the range as close as possibleto the actual temperature/concentrationrange. The IC200 will compensate by inter-polation and extrapolation. Consequently,there is no need for a 100% coverage. Theacutal measuring range is defined in section6-1 or section 7-3 and 7-4.

0 25 50 75 1000

100

200

Temperatuur 3%

Geleidendheid (mS/cm)

Code Elektrolyt Temperature ConcentrationRange Range

0 ACCESS CODE 111 H2SO4 0-100°C 0-5%2 Sulphuric acid 0-25%3 HC1 0-65°C 0-5%4 Hydrochloric acid 0-20%5 HNO3 0-80°C 0-5%6 Nitric acid 0-25%7 Na0H 0-100°C 0-5%8 0-15%9 ACCESS CODE 13

X9 a user programmable matrix is required0 linear compensation is required only

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7-12. Matrix Temperature compensationACCESS CODE : 13, 14, 15, 16, 17 and

18 (see NOTE)(see §7-0 for operation)

NOTE: In these service codes the IC200 transmittercan be fingerprinted to one particular appli-cation.For one particular temperature range that isprogrammed in ACCESS CODE 13, thespecific coductivities are given for 5 differentconcentrations of the process liquid: eachone in one specific ACCESS CODE (14 to18).

NOTE: Access to this code is only possible iftemperature compensation in section 6-3 isset to “T.C.”.

ACCESS CODE : 13DISPLAY : T1 °C or T1 °FAdjustment:Adjust this value to the low limit of the requi-red temperature range Press “ENT”.

DISPLAY : T5 °C or T5 °FAdjustment:Adjust this value to the high limit of therequired temperture range. Press “ENT”>

ACCESS CODE : 14DISPLAY : L1 x T1Adjustmetn:Adjust this value to the conductivity of thefirst solution at temperature T1. Press“ENT”.

DISPLAY : L1 x T2Adjustment:Adjust this value to the conductivity value ofthe first reference solution at the secondreference temperature. T2.Continue this process until “SERVE” is dis-

played.

ACCESS CODE : 15DISPLAY : L2 x T1Adjustment :Repeat the adjustment as described undercode 14, but now with the second solution.

ACCESS CODE: 16, 17 and 18These rows have to befilled in the same wayas described undercode 14.

NOTE:1. In defining the temperature compensa-

tion range, it is important to choose T1and T5 in such a way that the 5 referen-ce temperatures are user friendly: exa-mple: T1 - 0 and T5 = 80 ºC gives refe-rence temperatures of 0, 20, 40, 60, 60,80 ºC. The minimum span for the rangeis 50 ºC.

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38

Matrix Example Actual Example Actual Example Actual Example Actual Example Actual

CODE 13 TEMPERATURE T1...T5 0 25 50 75 100

CODE 14 SOLUTION 1 L1 31 53 76 98 119

CODE 15 SOLUTION 2 L2 86 145 207 264 318

CODE 16 SOLUTION 3 L3 146 256 368 473 575

CODE 17 SOLUTION 4 L4 195 359 528 692 847

CODE 18 SOLUTION 5 L5 215 412 647 897 1134

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2. Use the table in the manual to recordyour programmed values. It will makeprogramming easy for duplicate systemsor in case of Data lost.

3. E17 occurs when a temperature rangeof less than 50°C is entered.

4. Each matrix column has to increase inconductivity value:L1xTx<L2xTx<L3xTx<L4xTx<L5xTx.

5. E4 occurs when two standard solutionshave identical conductivity values at thesame temperature within the temperaturerange.

SODIUM HYDROXIDE0-15% at 0- 100 C

7-13. Enable/Disable E6 function

ACCES CODE : 19Display : *EN.E6Adjustments : X

Explanation :This entry makes it possible to enable/disa-ble the E6 function, which may be necessarywhen measuring at low conductivity or highresistivity.

Default: 1 (E6 active)

7-14. Selection between "soft" or "hard"FAIL Situations

ACCES CODE : 20Display : *ERR.05Adjustment:No Error 85 is skipped: next error is

shownYes O = Soft Alarm

1 = Hard AlarmPressing ENTER confirms theselection

Explanation :As described in chapter 9 the error codesmarked with an asterisk(*) normally will trig-ger a number of actions.If soft alarm action is selected, the FAILmessage flag is flashing.The output functionswill not go into BURNOUT position.If hard alarm functions is selected, the out-put goes into BURN OUT signal if program-med that way in Access Code 09.The FAIL flag is show in the display.

0 25 50 75 1000

200

400

600

800

1000

1200

Temperatuur (Celcius)

1% 3% 6% 10% 15%

X0 E6 inactive1 E6 active

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7-15. Passcode protection by three digitcode

ACCESS CODE : 33(see §7-0 for operation)

DISPLAY : *PASSAdjustment : X.X.X

NOTE: # can be a digit from 1 to 9, and itwill give a protection according to theschematic below of the programmedlevel.

0 = No passcode 5 = Passcode is 1231 = Passcode is 1116 = Passcode is 9572 = Passcode is 3337 = Passcode is 3313 = Passcode is 7778 = Passcode is 5464 = Passcode is 8889 = Passcode is 847

Explanation:In some cases a protection of operationlevels is wanted. In this way unauthorizedaccess to any of the 3 levels can be blockedby a simple passcode. When a passcod eisselected for an operation level, access tothat level can only be obtained after enteringthe passcode. The display will show a mes-sage *PASS* to indicate the entry of thepasscode.

- For the Service level the passcode entry isrequested after pushing the YES-key.

- When the Service level protection is activa-ted, the passcode cannot be changed byunauthorized persons.

Default: 0.0.0No passcode protection

7-16. Restore default settingsACCES CODE : 55 (see §7-0)DISPLAY : ERASE

Adjustment:YES Erase all programmed values and

replace them by defaults.NO Keep all programmed values as

before.

Explanation:This entry is provided to make it possible tostart from the default values given byYokogawa and thus erase all previously pro-grammed information.

X.X.X0.X.X Protection on Maintenance level

inactiveX.0.X Protection on Commissioning

level inactiveX.X.0 Protection on Service level inac-

tive#.X.X Protection on Maintenance level

activatedX.#.X Protection on Commissioning

level activatedX.X.# Protection on Service level acti-

vated

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40

WARNING:Do no enter service codes that are notmentioned in this booklet.Otherwise unintended loss of factoryprogrammed data may result in malfunction of the instrument.

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8. OPERATION OVERVIEW

NOTE: All levels can be protected by a 3 digit passcode. See §7-15.

Routine Use Chapter

MAINTENANCE CAL Grab sample calibration 5-1

Operation by keys DISPLAY Show additional information and change

through the closed message on second line display 5-2

cover HOLD If the HOLD function is activated 5-3

COMMISSIONING RANGE Adjusting the output range 6-1

Operation by *-key when SET HOLD Activating the hold function 6-2

cover is removed TEMP Temperature compensation 6-3

AIR SET Zero calibration before Start-Up 6-4

SERVICE SERVICE The transmitter can be configurated to the 7

Operation by coded entry particular application/installation

from commissioning

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9. TROUBLE SHOOTING

IM 12D8B2-E-H

9-1. Introduction

The EXA IC200 microprocessor based con-ductivity analyser continuously monitors thecondition of all key components of themeasuring system to ensure that measure-ment is dependable. If a fault is detectedthis is immediatly signalled. Errors are shownon the display with a code. The followingtable shows the errors which can be detec-ted and gives information to help locate thefault or identify the error. Faults detectedwhile the instrument is on line can also besignalled by a (temporary) high output sigal(22 mA) see section 7-9.

9-2. Self diagnostics of the conductivitysensor

During measurement the instrument adjuststhe measuring parameters to give the bestconditions for the actual value being meas-ured.At all values the instrument checks the sign-al from the cell to search for distortion. Ifthere is a problem with the installation of thecell and this becomes defective this will trig-ger an error message on the display possi-bly accompanied by a fault signal through a(temporary) high output current (22 mA).

9-3. Self diagnostics of the temperaturesensor

The temperature sensor, which is normallybuilt into the conductivity cell, is checked todetect damage or faulty connections.

9-4. Self diagnostics of the electronicsThe microprosessor opertion is checked bya watchdog which initiates an electronicreset if the normal functions suffers severeinterference. During reset the instrumentchecks the program and all stored data. If afault is then detected an alarm is give.

9-5. Checking during operationWhenever the instrument is being program-med or calibrated, data is checked and anerror is shown when appropriate. Shouldthis occur the new data is rejected and theinstrument continues to work with the previ-uos settings.

42

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* These errors will trigger the FAIL-status

NOTE:If abnormal values are displayed, usually incombination with E5, E6, E7, or E8 messa-ges, the impedance, inductance, capacitan-ce and isolation resistances must be meas-ured to diagnose the problem.

Normal values are : 11-12:30 kOhm at roomtemperature11-14:>1000 Megohm13-14:>1000 Megohm14-15:>1000 Megohm13-17:150-300 mH (17 is shield of coax)15-16:150-300 mH (16 is shield of coax)

NOTE:If abnormal readings are displayed, the pro-cess can be simulated by a loop through thedry donut to a resistance box (YokogawaQT40 sensor simulator). The reading shouldagree with IF.100/R in uS/cm in whichR=Resistance in kOhm and IF = program-med Installation Factor, typically 1.7.

43

9-6. Error messages and explanation

Code Error description Possible cause RemedyE2 Wrong temperature coefficient Incorrect data entry See section §6-3E3 Calibration out of range (>factor 10) Wrong unit (mS vs µS) See section §6-1

Defective sensor Replace sensorStandard error Check standard

E4* Impossible program for Temperature Incorrect data in 5*5 Matrix in code See section §7-13Compensation 14-18

E5* Conductivity too high Incorrect wiring Check wiringdefective sensor Replace sensor

E6* Conductivity too low Sensor not submersed Check installationSensor plugged Clean sensorIncorrect wiring Check wiringDefective sensor Replace sensor

E7* Temperature too high Incorrect wiring Check wiringShortend TC Replace sensor

E8* Temperature too low Incorrect wiring Check wiringOpen circuit TC Replace sensor

E9* Impossible AIR SET Too high ZERO Replace sensorE10* EEPROM write failure Software problem Unplug the unit, try again

call Yokogawa ServiceE15 Impossible adjustment Temperature Wrong standard TC error Check reference see section §7-8E17 Outspan span too small Max. zero suppression is 90% See section §6-1

Temperature compensation span too small Min. temperature span is 50°C See section §7-13E18 Impossible program for Output table Incorrect data in code 04 See section §7-4E19 Programmed values not accepted Values exceed preset limits Try again, read instructionsE20* DATA LOST Unauthorized programming The unit has to be reinitialized

Software problem Call YokogawaE21 Corrupted Eprom Software failure Call Yokogawa

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10. SYSTEMDIAGRAM 10-1. ATEX

<Ex> II 2 (1)G

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10-2. FM

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10-3. CSA

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IM 12D8B2-E-HSubject to change without noticeCopyright©

Printed in Holland, 05-011 (A) Q

EUROPEAN HEADQUARTERSYokogawa Europe B.V.Databankweg 203821 AL AMERSFOORTThe NetherlandsTel. +31-33-4641 611Fax +31-33-4641 610E-mail: [email protected]

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