TechnicalInformationTI 193C/07/enNo. 51500279

Due to the modularity of its design, theLiquisys S CLM 223 / 253 transmittercan be adapted to a wide range ofcustomer needs. The basic version,which provides simple measuring andalarm signalling functions, can beequipped with additional software andhardware modules to match specificapplications. Retrofitting of expansionmodules is also possible.

Areas of application• Ultrapure water• Water treatment• Ion exchangers• Reverse osmosis• Cooling water desalinisation• Sewage

Benefits at a glance• Measuring transmitter in field or

panel-mounted housing• Universal application

– Conductivity and specific resistancevia software switching

– Transmitters for conductive orinductive measurement

– Ultrapure water compensation acc.to IEC 746 (conductive only)

• Simple handling– Logically arranged menu structure

with plain text in 6 languagesfacilitates instrument configuration

– Large, two-line display indicatesmeasured value and temperature atthe same time

– Calibration via CAL key• Safe operation

– Overvoltage (lightning) protectionaccording to EN 61000-4-5

– Direct access for manual contactcontrol

– User-defined alarm configuration foralarm contact and error current

The basic unit can be extended with:

• 2 or 4 contacts for use as:– Limit contacts (also for temperature)– P(ID) controller– Timer for simple rinse processes– Complete cleaning with Chemoclean

• Plus package:– Any current output configuration via

table– Automatic initiation of cleaning in

case of alarm or limit violation– Ultrapure water monitoring with

pre-alarm acc. to USP 23(conductive only)

– Polarisation detection (conductive only)– Concentration measurement (% / TDS)– Temperature compensation via table– Live check of measuring cell

• HART® or Profibus PA• 2nd current output for temperature

Hauser+EndressNothing beats know-how

Conductivity Measurementliquisys S CLM 223 / 253

Conductivity and Resistance Transmitter

Quality made byEndress+Hauser

ISO 9001

Liquisys S CLM 223

Liquisys S CLM 253

Details Liquisys S CLM 223 / 253 providesa solution for all drinking waterprocessing, process water and sewagetreatment applications.

Conductive or inductiveTwo instrument versions for measurementwith conductive (two-electrode) measuringcells or inductive measuring cells areavailable. The use of inductivemeasuring cells that are less sensitive tosoiling than conductive measuring cellsis recommended for concentrationmeasurement or adhering media.

Features of the basic version (CD / ID) :

Measurement of conductivity orspecific resistanceThis is selected via the menu. Duringmeasurement, the value measured canbe displayed in the other measuringmode. The temperature is displayed atthe same time if desired.

Temperature compensation selectionsavailable are linear (α = 0 means notemperature compensation) or specialultrapure water compensation (NaClcurve) according to IEC 746. Thereference temperature is 25 °C.

Different alarms are required dependingon application and operator. Thereforethe Liquisys S CLM 223 / 253 permitsindependent configuration of thealarm contact and error current foreach individual error. Unnecessary orundesirable alarms can be suppressedin this manner.

Up to four contacts can be used aslimit contacts (also for temperature), toimplement a P(ID) controller or forcleaning functions.

Direct manual operation of thecontacts (bypassing the menu)provides quick access to limit, control orcleaning contacts, permitting speedycorrection of deviations.

The serial numbers of the instrumentand modules and the order code canbe called up on the display.

The cell constant can be edited andeven calibrated for demanding specialapplications.

The CS / IS version provides additionalfunctions :

Inductive measuring cells must normallybe installed in pipes at a requiredminimum distance from the pipe wall. Ifthis minimum distance is not observed,the measured value changes. The built-in adaptive calibration feature can beused to compensate for this once thecell is installed.

In order to display wide measuringranges while still achieving a highresolution in certain ranges, the currentoutput can be configured as requiredvia a table. This permits bilinear orquasi-logarithmic curves, etc.

The sensor and process check systemalso indicates any polarisation of theconductive measuring cell. Since thereis no subdivision into severalmeasuring ranges (the full range from0 ... 2000 mS/cm is available at alltimes), the measuring range is limitedby the cell constant only. Polarisationdetection then determines whether or notthe working range determined by themeasuring cell is exceeded.

The live check issues an alarm whenthe measuring cell signal does notchange over a defined period of time. Thismay be caused by blocking, passivation,separation from the process, etc.

Ultrapure water monitoring according toUSP 23 means that the uncompensatedconductivity and the temperature aremeasured and compared to a table. TheLiquisys S CLM 223 / 253 (conductive)comes with this function, and theuser-adjustable pre-alarm indicatesundesirable operating values in due time.Full compliance with USP 23 requiresthe use of a precisely calibratedmeasuring cell, for example, the CLS 15.

The conversion from conductivity toconcentration is effected using fouruser-definable concentration curves.This permits concentrations to bedisplayed directly in % or ppm, i.e. asTDS (total dissolved salts solids).

E 017E 123- - - -

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2.4 / 22 mA

offon

Timer

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off

offon

onChemoclean

t

Instrument DATA

eS rNr I1

1 563483

0

20

mA

t0

20

mA

T T TµS/cm µS/cm

10

15

20

0.9

1.0

1.1

45

50

55

75

80

85

1.8

1.9

2.1

USP 23

2

Basic version andplus package

Measuring and controlsystem

A complete measuring systemcomprises:• the conductivity transmitter Liquisys S

CLM 223 or CLM 253• a conductivity measuring cell with or

without integrated temperature sensor

• a CYK 71 or CLK 5 cable permanentlyattached to the sensor

Options:• an extension cable CYK 71

(conductive) or CLK 5 (inductive) and• junction box VBM

Measuring ranges ofconductivity measuringcells

ENDRESS+HAUSERLIQUISYS

CAL REL

REL1

REL1

ALARMREL2

REL2E

ENDRESS+HAUSERLIQUISYS

CAL REL

REL1

REL1

ALARMREL2

REL2E

Up to 4 relays

Measuringcable

Liquisys S CLM 253

CLS 15

CLS 21 withintegrated Pt 100

Immersionassembly CLA 111

Alarm contact

Signal output 1:conductivity

2 digital inputs

Power supply (mains)

Aux. 15 V supply voltage

LM2X3SYS.CDR

Signal output 2:temperature (optional)

Liquisys S CLM 223CLS 50

Complete measuring systemswith Liquisys S CLM 223 / 253

100.01 0.1 1 10 100 1 100 1000

µS/cm

k = 10 (CLS 30)

CLS 50

k = 1 (CLS 21)

k = 0.1 (CLS 12 / 13 / 15 / 19)

k = 0.01 (CLS 12 / 13 / 15 / 19)

mS/cm

CD-CELL.CDR

Measuring ranges ofconductive andinductive conductivitymeasuring cells

Basic version With plus package (CS / IS version)

MEASUREMENT

CALIBRATION of cell constantCALIBRATION of residual coupling (ind. cells)

Read instrument DATA

Linear CURRENT OUTPUTCURRENT OUTPUT simulation

1 programmable ALARM CONTACT(contact and error current)

Adaptive CALIBRATION (inductive cells)

POLARISATION detection(two-electrode cells)LIVE CHECK of sensor

CURRENT OUTPUT programmable (table)

Additional features Additional features

2 CHANGEOVER CONTACTS for– Measuring parameter limit– Temperature limit– P(ID) controller– Timer for cleaning

Measurement according to USP 23 withpre-alarm (two-electrode cells)Automatic cleaning triggered by alarm or limitviolation

Additional features Additional features

2 more CHANGEOVER CONTACTS (total of 4) for– Measuring parameter limit– Temperature limit– P(ID) controller– Chemoclean cleaning

(water and cleaning agent)

Cleaning triggered externally or automaticallyby alarm or limit violation

Ala

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ling

Con

trolli

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ing

3

Operation

Everything at a glanceThe display simultaneously shows thecurrent measured value and thetemperature – the essential processdata. Brief informational texts in theconfiguration menu provide assistancewith parameter configuration.

Intelligent and simpleAll instrument control functions arearranged in a logical menu structure.Following access code entry, theindividual parameters can be easilyselected and modified as needed.

SETUP 1

SETUP 2

ALARM

CHECK

RELAYS

α TABLE

CONCENTRATION

SERVICE

CURRENT OUTPUT

Selection of measurement type and unit, adjustment of measuredvalue filter

Adjustment of current output assignment, curve andsimulation for verification

User adjustment of errors to switch relay or generate error current(S version: automatic cleaning trigger in the event of an alarm)

Adjustment of polarisation detection (conductive) and live check alarm

Up to 4 relays may be configured as limit contacts, P(ID) controller, timeror for chemical cleaning (S version: automatic cleaning trigger in caseof limit violation / CS version: USP 23)

Definition of table for temperature compensation (up to 10 value pairs)α

In addition to conductivity measurement, the concentration of a substancecan be displayed in different units with user-defined assignments tothese base units (e.g. % / ppm TDS)

Selection of language version, display of software or hardwareserial numbers, entry of access codes

Temperature measurement and temperature compensation

CALIBRATIONCalibration of cell constant; calibration of residual coupling (inductive cells);for IS version also adaptive calibration

Current temperature display can be suppressed by pressingthe plus key

Display of active errors (sequence according to priority)

MEAS.VALUE

TEMPERATURE

Display

LM2X3OP.CDR

Overview of Liquisys SCLM 223 / 253 menu.This overview covers allthe options that can beinstalled (see page 2Details).

1734mS/cm

ENDRESS+HAUSERLIQUISYS

CAL REL

REL1

REL1

ALARMREL2

REL2E

Setpoint

R362

Liquid crystal displayfor display ofmeasured values,configuration dataand current menu field

4 main control keys forcalibration and instrumentconfiguration

Key for switchingbetween automatic andmanual relay operation

Key for manualrelay switching

LED indicatorsfor switched limitoutputs

LED indicator foralarm function

LCD-LF-E.CDR

Field for userlabelling

User interface:Display and keys

4

Electrical connection All connections to the panel-mountedinstrument CLM 223 are established viathe terminal strips on the rear.In the case of the field instrumentCLM 253, all wires (including themeasuring cell cable) are connected toterminals in a separate wiringcompartment.

All the wiring can remain in place if theinstrument needs repair because allpossible repairs are limited to assemblyreplacement. So, dismantling theinstrument and rewiring are no longernecessary.

REAR223.TIF

Left:Liquisys S CLM 223,connections on the rearof the instrument

Right:Liquisys S CLM 253,rear of instrument withreplaceable electronicsbox (E)

15 V85

86

S

10 ... 50 V

93

94

L+

L–

L

N

∼ =

41

42

43

47

57

51

54

48

58

52

55

49

59

53

56

mA

10 ... 50 V

81

34

33

82

ϑ

ϑϑ

mA

32

31

11

84

84

15

16

83

83

12

13

κ

Conductivemeasuringcell

Relay 1*

Temperaturesensor Pt 100

Power supply

ANLF.CDR

Aux. voltageoutput

Digital input 1

Signal output 1:conductivity

Relay 2*

Alarm*

Relay 3*

Relay 4*

Digital input 2

Inductivemeasuringcell

optional

(alternative)

Signal output 2:temperature(optional)

*Contactstatus shown:no current orfault present

bl

bl

rdrd

ye

gn

wt

rd

wt

Electrical connection ofLiquisys S CLM 223 / 253

FELD2.CDR

E

5

DimensionsENDRESS+HAUSERLIQUISYS

CAL REL

REL1

REL1

ALARMREL2

REL2E

XM223-2D.CDR

90

139

6

96

Dimensions ofLiquisys S CLM 223

ENDRESS+HAUSERLIQUISYS

CAL REL

REL1

REL1

ALARMREL2

REL2E

XM253-2D.CDR

157

247

115

154

11

∅6

170

70

70

Dimensions ofLiquisys S CLM 253

6

Mounting ofLiquisys S CLM 223

The panel-mounted version is mountedusing the supplied tensioning screws.The required overall mounting depth isapprox. 175 mm.

Mounting ofLiquisys S CLM 253

There are several mounting options forthe field instrument:• Mounting on a square-tube mounting

post• Mounting on cylindrical pipes• Wall mounting with fastening screws

Weather protection cover CYY 101 isrequired for outdoor installation. Thiscover is compatible with all fieldinstrument mounting options.

Proceed as follows to install theinstrument on a square-tube mountingpost (universal upright post CYY 102 orupright post of suspension assemblyholder CYH 101):➀ Install the weather protection cover

on the upright post first.➁ Attach the field instrument to the

weather protection cover from therear.

CYY101.CDR

300

270

320

Weather protectioncover CYY 101(see Accessories)

XM223MON.CDR

Mounting cutoutaccording toDIN 43700

92+

0.5

92+0.5

90

33

96

57

ca. 25 139

max. 45

6

Flat gasket(included in delivery)

Installation of panel-mounted housing

YY101102.CDR

60 × 60

150

1495

120

➀

➁

Universal upright postCYY 102 or identicalupright post ofsuspension assemblyholder CYH 101(square tube, seeAccessories);mounting of weatherprotection cover andfield instrument

7

Mounting ofLiquisys S CLM 253(continued)

XM253WAN.CDR

157

115

16

∅8

Wall mounting;Screws: ∅ 6 mmAnchors: ∅ 8 mm

MASTSATZ.CDR

90

70

30

∅8

∅ 6

90

70

9070

∅8

M 6

60

Post mounting kit forinstallation of fieldhousing on cylindricalpipes (horizontal orvertical, max. ∅ 60 mm;see Accessories)

XM253MAS.CDR

Mounting on cylindricalpipes (shown withweather protectioncover installed on right)

8

Technical dataGeneral specifications Manufacturer Endress+Hauser

Product designation Liquisys S CLM 223Liquisys S CLM 253

Input Measured quantities conductivity, resistance, temperature

Conductive conductivity/resistance measurement

Measuring range conductivity: 0 ... 2000 mS/cm (uncompensated)resistance: 0 ... 86 MΩ ·cm

Usable cell constant k = 0.0025 ... 99.99 cm–1

Maximum length of cable to measuring cell conductivity: 100 mresistance: 15 m

Measuring frequency conductivity: 299.75 ... 1077.6 Hzresistance: 32.5 ... 425 Hz

Inductive conductivity measurement

Measuring range 0 ... 2000 mS/cm (uncompensated)

Usable cell constant k = 0.0025 ... 99.99 cm–1

Maximum length of cable to measuring cell 60 m (CLK 5)

Measuring frequency 2 kHz

Minimum distance for 0 / 4 ... 20 mA signal meas. value betw. 0 and 199.9 µS/cm: 20 µS/cmmeas. value betw. 200 and 1999 µS/cm: 200 µS/cmmeas. value betw. 2 and 19.99 mS/cm: 2 mS/cmmeas. value betw. 20 and 2000 mS/cm: 200 mS/cm

Temperature measurement

Temperature sensor Pt 100

Measuring range –35 ... +250 °C

Temperature offset range ±20 °C

Temperature compensation

Compensation types linear, NaCl, table, (conductive only:) ultrapure water

Range –35 ... +250 °C

Reference temperature 25 °C

Digital inputs 1 and 2

Voltage 10 ... 50 V

Current consumption max. 10 mA

Output Conductivity/resistance signal output

Current range 0 / 4 ... 20 mA, galvanically separated;error current 2.4 / 22 mA

Load max. 500 Ω

Output range adjustable

Isolation voltage max. 350 Vrms / 500 V DC

Overvoltage (lightning) protection according to EN 61000-4-5:1995

Temperature signal output (optional)

Current range 0 / 4 ... 20 mA, galvanically separated

Load max. 500 Ω

Output range adjustable, ∆ 10 ... ∆ 100% of upper range value

Isolation voltage max. 350 Vrms / 500 V DC

Overvoltage (lightning) protection according to EN 61000-4-5:1995

Auxiliary voltage output

Output voltage 15 V ± 0.6 V

Output current max. 30 mA

Contact outputs (floating changeover contacts)

Switching current with ohmic load (cos ϕ = 1) max. 2 A

Switching current with inductive load (cos ϕ = 0.4) max. 2 A

Switching voltage max. 250 V AC, 30 V DC

Switching power with ohmic load (cos ϕ = 1) max. 1250 VA AC, 150 W DC

Switching power with inductive load (cos ϕ = 0.4) max. 500 VA AC, 90 W DC

9

Technical data(continued)

Output (continued) Limit contactor

Pickup / droput delay 0 ... 2000 s

Controller

Function (adjustable) pulse length / pulse frequency controller

Controller response PID

Proportional band Kp: 0.10 ... 10.00

Period for pulse length controller 0.5 ... 999.9 s

Frequency for pulse frequency controller 60 ... 180 min–1

Alarm

Function (switchable) steady / fleeting contact; normally closed / open

Alarm threshold adjustment range conductivity / resistance / temperature:complete measuring range

Alarm delay 0 ... 2000 s

Accuracy Conductivity measurement

Deviation of indication1 max. 0.5% of measured value ± 4 digits

Reproducibility max. 0.2% of measured value ± 2 digits

Measurement deviation1, conductivity signal output 0.75% of current output range

Resistance measurement

Deviation of indication1 max. 0.5% of measured value ± 4 digits

Reproducibility max. 0.2% of measured value ± 2 digits

Measurement deviation1, resistance signal output 0.75% of current output range

Temperature measurement

Resolution 0.1 °C

Deviation of indication1 max. 1.0% of measuring range

Measurement deviation1, temperature signal output max. 1.25% of current output range

Ambient conditions Ambient temperature (nominal operating conditions) –10 ... +55 °C

Ambient temperature (limit operating conditions) –20 ... +60 °C

Storage and transport temperature –25 ... +65 °C

Relative humidity (nominal operating conditions) 10 ... 95%, non-condensing

Protection class of panel-mounted unit IP 54 (front), IP 30 (housing)

Protection class of field housing IP 65

Electromagnetic compatibility interference emission acc. to EN 50081-1:1992interference immunity acc. to EN 50082-2:1995

Physical data / design Dimensions of panel-mounted unit (H × W × D) 96 × 96 × 145 mm

Installation depth approx. 175 mm

Dimensions of field housing (H × W × D) 247 × 170 × 115 mm

Weight of panel-mounted unit max. 0.7 kg

Weight with field housing max. 2.3 kg

Display LC display, two lines, five and nine digits, with statusindicators

Materials

Housing of panel-mounted unit polycarbonate

Front membrane polyester, UV-resistant

Field housing ABS PC Fr

Power requirements Supply voltage 100 / 115 / 230 V AC +10 / –15%, 48 ... 62 Hz24 V AC/DC +20 / –15%

Power consumption max. 7.5 VA

Fuse protection fine-wire fuse, medium time-lag, 250 V / 1 A

1acc. to IEC 746-1, for nominal operating conditions

Subject to modifications.

10

Accessories Mounting accessoriesType Features Order number

Weatherprot. coverCYY 101

For mounting on field housing, for outdoor useDimensions (H × W × D): 320 × 300 × 270 mmMaterial: stainless steel 1.4301

CYY 101-A

Universalupright postCYY 102

Square tube for mounting of field housingDimensions (H × W × D): 1495 × 60 × 60 mmMaterial: stainless steel 1.4301

CYY 102-A

SuspensionassemblyholderCYH 101

For immersion assemblies with suspensionbracket, e.g. CYA 611;for installation on basin or channel rimMaterials: stainless steel 1.4301 / PE / PP / PA

CYH 101-A

Pendulumframe

For pendulum suspension of assemblies, e.g.CYA 611Material: stainless steel 1.4301

50080196

Postmounting kit

Kit for mounting of field housing on horizontalor vertical pipes (∅ max. 60 mm)Material: stainless steel 1.4301

50086842

Assemblies

Type Features Applications

CYA 611 Immersion assembly with G 1, G ¾ or NPT ¾"thread

Sewage, water

DipsysCLA 140

Immersion assembly with flange DN 80 PN 16,ANSI 3" 150 lbs or JIS 10K 80A; measuringcell holder with bayonet lock

Sewage, paperindustry

Two-electrode conductivity measuring cells (selection)

Type Features Applications

CLS 15 Cell constant: k = 0.1 cm–1 or 0.01 cm–1

Process connections: NPT ½", 1½" clampCondensate, ionexchangers

CLS 21 Cell constant: k = 1 cm–1

Process connections: G 1, DN 25 andDN 40 dairy pipe fitting, 2" clamp

Service water,boiler feed water

CLS 30 Cell constant: k = 10 cm–1

Process connections: G 1, DN 25 andDN 40 dairy pipe fitting

Service water,concentrationmonitoring

Inductive conductivity measuring cell

Type Features Applications

CLS 50 Cell constant: k ≈ 2 cm–1Process connections: G ¾, NPT 1", DN 50 flange(incl. 5 m attached cable)

Concentrationmeasurement,product monitoring

Cables

Type Features Order number

CYK 71 Standard measuring cable for connection oftwo-electrode-measuring cells with andwithout Pt 100 (also usable for extension)

50085333

CLK 5 Extension cable for inductive measuring cells 50085473

VBM Junction box 50003987

11

Product structure

Endress+Hauser GmbH+Co.- Instruments International -

P.O. Box 2222D-79574 Weil am Rhein

Tel. (07621) 975 - 02Fax (07621) 975345

TI 193C/07/en/01.99Printed in Germany / DT / CV5 (51500279)

Hauser+EndressNothing beats know-how

Version

CD Conductivity/resistance measurement (two-electrode cell)CS Conductivity/resistance measurement (two-electrode cell) with additional functionsID Conductivity measurement (inductive cell)IS Conductivity measurement (inductive cell) with additional functions

Power supply

0 230 V AC1 115 V AC5 100 V AC8 24 V AC/DC

Measurement output

0 Conductivity/resistance1 Conductivity/resistance and temperature3 Profibus PA5 Conductivity/resistance with HART6 Conductivity/resistance with HART and temperature

Contacts

05 No additional contacts10 2 contacts (limit / P(ID) / timer)15 4 contacts (limit / P(ID) / Chemoclean)

CLM 223- complete order code for CLM 223

CLM 253- complete order code for CLM 253

Conductivity and resistance transmitter Liquisys S CLM 223 / CLM 253