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BA 194C/07/en/07.02No. 51500268Software version 2.50 or laterLiquisys MCPM 223 / 253Transmitter for pH and RedoxEndress HauserThe Power of Know HowQua

3.3 Mounting3.3.1 Field instrumentSeveral mounting options are available for theLiquisys M in the field instrument version:• Post mounting on cylindri

Post mounting kitMounting kit for installation of field housing onhorizontal and vertical pipes (max. ∅ 60 mm);material: stainless steel SS 304 (AISI

3.3.2 Mounting examplesMONT10.CDRFig. 3.7Pipe mounting ofLiquisys M field instrumentMONT2.CDRFig. 3.8Liquisys M field instrumentleft:Wall mountingrigh

3.3.3 Panel-mounted instrumentThe device is attached using the supplied tensioning screws (see Fig. 3.9).The required overall installation depth is ap

3.4 Electrical connectionConnection diagramThe connection diagram depicted in Fig. 3.10 shows the connections of an instrumentequipped with all the op

Note:• Please label the sensor terminalblock with the enclosed sticker.• Connect the ground terminal withPE.Caution:• Terminal designated as NCmay not

3.5 Electrode installation and measuring cable connectionMeasuring cable connectionThe terminal block is located in a separateconnection compartment w

Cable termination for panel-mounted instrument CPM 223 with solder-free BNC plug(for glass electrodes only)1. Cut off wire end sleeves of the coaxialc

Note:• The instrument is pre-configuredfor symmetrical measurement.Change the configuration in fieldA2 for asymmetrical measurement(see chapter 5.2.1)

4 Operation4.1 Operator interface4.2 DisplayLED indicatorsLiquid crystal display705pHR262SetpointENDRESS+HAUSERLIQUISYS MDISPLAY1.CDRLiquid crystal di

Need information on the instrument?Please read the following chapters:SafetyGeneral informationYou wish to install the instrument.The required steps a

4.3 KeysCAL keyWhen the CAL key is pressed, the instrument prompts for the calibrationaccess code:Code 22 for calibrationCode 0 or any code for calibr

4.4 Auto / manual mode of operationNote:• Enable the manual mode byentering access code “22”.• The operating modes remains ineffect even after a power

4.5 Operating concept4.5.1 Operating modesNote:• Remains in Setup mode forapprox. 15 mins., the systemautomatically jumps back tomeasuring mode. An ac

4.5.2 Access codesAll instrument access codes are fixed, i.e. they cannot be modified. When the instrumentrequests the access codes, it recognises the

4.5.4 Hold function: “freezing” of outputsfreezes” the outputsThe current output is “frozen” in the setup mode and during calibration, i.e. the last c

5 Instrument configurationAfter power-up the instrument performs aself-test and then enters to measuring mode.Now it can be configured and calibrated

Factory settingsWhen the instrument is switched on for the first time, the factory settings are in effect. Thefollowing table provides an overview of

5.1 Start-upAfter switching the instruement on, make the following settings to the specified function groups:• Function group SERVICE (S)S1: Select la

5.2.2 Setup 2 (Temperature)Coding FieldSelection or rangeFactory setting (bold)Display InfoBFunction groupSETUP 2Initial display in function groupSETU

5.3 Current inputThis function group offers two independent application solutions, provided that the currentoutput of an external measured quantity, e

PM253E00.CHPTable of contents1.1 Symbols used ... 21.2 Storage and transport ...

5.3.2 Feedforward control to PID controllerIn processes with very short response times it may be practical to apply the flow rate to thecontroller, if

Coding FieldSelection or rangeFactory setting (bold)Display InfoZFunction groupCURRENT INPUTInitial display infunction groupCURRENT INPUT.Z1Select flo

5.4 Current outputsThe function group CURRENT OUTPUT is used to configure the individual outputs. Either alinear (O3 (1)) or, in conjunction with the

Coding FieldSelection or rangeFactory setting (bold)Display InfoOFunction groupCURRENTOUTPUTInitial display in function groupCURRENT OUTPUT.O1Selectio

Coding FieldSelection or rangeFactory setting (bold)Display InfoO3 (2)Current outputsimulationlin = linear (1)sim = simulation (2)Tab=Tabelle (3)The s

5.5 Monitoring functionsThe monitoring functions are used to define various alarms and to set output contacts. Eachindividual error can be defined to

Coding FieldSelection or rangeFactory setting (bold)Display InfoF6Set alarm contactto be effective forselected erroryesnoIf set “no” all the other ala

5.5.2 CheckThe function group CHECK is only accessible for instruments equipped with the Plus packet.Two different monitoring functions can be selecte

Limit monitoringThis function monitors the measuring value for exceeding monitoring limits and triggers analarm.Coding FieldSelection or rangeFactory

Coding FieldSelection or rangeFactory setting (bold)Display InfoP8Enter upper alarmthreshold16.00 pH-2.00 ... 16.00 pHOmitted when P5 = Off.P9Select p

1 General information1.1 Symbols usedWarning:This symbol alerts to hazards whichcould cause serious injuries as wellas damage to the equipment ifignor

5.6 Relay contact configurationThe function group RELAYS is only accessible for instruments equipped with the Plus packet.The relay contacts described

5.6.2 P(ID) controllerThe Liquisys M supports the definition of various controller functions. On the basis of the PIDcontroller, P, PI, PD and PID con

Control and fine-optimisation of set parameters using a recorderActuating signal outputs (R237 ... R2310)The control contact in question outputs a swi

Control characteristic for direct and inverted control actionField R236 offers two control characteristics for selection which have the effects shown

5.6.4 ChemoClean functionJust like the timer function, ChemoClean canalso be used to start a cleaning cycle.However, ChemoClean supports differentclea

Coding FieldSelection or rangeFactory setting (bold)Display InfoRFunction groupRELAISRelay contacts can be selectedand adjusted.R1Selection ofcontact

Coding FieldSelection or rangeFactory setting (bold)Display InfoR216Enter alarmthreshold(as an absolutevalue)pH 16.00pH –2,00 ... 16.001500 mV–1500 ..

Coding FieldSelection or rangeFactory setting (bold)Display InfoR226Enter alarmthreshold(as an absolutevalue)150.0 °C–50.0 ... 150.0 °CWhen the alarm

Coding FieldSelection or rangeFactory setting (bold)Display InfoR236Selection ofcharacteristiccontrollerdir = directinv = invertedSetting may or may n

Coding FieldSelection or rangeFactory setting (bold)Display InfoR2 (4)Configurecleaning function(timer)LC PV = Limitcontactor pH/redox (1)LC °C = Limi

1.5 Product structureYou can identify the instrument version by the order code on the nameplate.Sub “codes” are the release codes for Software upgrade

Coding FieldSelection or rangeFactory setting (bold)Display InfoR253Enter pre-rinsetime20 s0 ... 999 sWater is used for rinsing.R254Enter cleaningtime

Coding FieldSelection or rangeFactory setting (bold)Display InfoR262Enter setpoint 1(or 2)pH 6.00pH –2.00 ... 16.00Assignment of relay 1 and relay 2fo

5.7 ServiceCoding FieldSelection or rangeFactory setting (bold)Display InfoSFunction groupSERVICES1Selection oflanguageENG = EnglishGER = DeutschFRA =

Coding FieldSelection or rangeFactory setting (bold)Display InfoS9Reset ofinstrument(restore defaultvalues)noSens = sensor dataFacty= factorysettingsF

5.8 E+H Service5.9 InterfacesCoding FieldSelection or rangeFactory setting (bold)Display InfoEFunction groupE+H SERVICEE1Selection ofmoduleContr = con

5.10 CalibrationThis function group is used to calibrate thetransmitter. Two types of calibration arepossible:• Calibration by means of measurement in

5.10.1 Wet calibrationFor access to the CALIBRATION menu, please enter Code 22.Coding FieldSelection or rangeFactory setting (bold)Display InfoC(1)Fun

Coding FieldSelection or rangeFactory setting (bold)Display InfoC17Zero point (U_is)is displayedGlass: pH 7.00pH 5.00 ... 9.00Antimony: pH 1.00pH –1.0

Coding FieldSelection or rangeFactory setting (bold)Display InfoC25Store calibrationresult?yesnonewIf C24 = E xxx, then onlyno or new.If new, return t

5.10.2 Numeric calibrationWith the numeric calibration you can enter or correct slope and zero point manually.Coding FieldSelection or rangeFactory se

2 Safety2.1 Intended applicationThe CPM 223/253 transmitter is a field-testedand reliable transmitter used to determine thepH or redox (ORP) value.The

5.11 OffsetThe settings in the OFFSET function group can be used to calibrate the measurement to a referencemeasurement. This requires a linear shift

6 InterfacesFor instruments equipped with a communication interface, please refer to separate operatinginstructions BA 208C/07/en (HART®) or BA 209C/0

7 Maintenance and troubleshootingMaintenance:• Maintenance means that all measures which will guarantee the safety of operation andreliability of the

ErrorPossible cause Remedy Equipment need, spare partsFixed, incorrectmeasure value– Sensor not immersed orprotective cap not removedCheck installatio

ErrorPossible cause Remedy Equipment need, spare partsNo temperature outputsignal– Instrument only has one currentoutputRefer to nameplate for variant

7.2 Troubleshooting using the error messagesDisplay and select error messages by pressing the MINUS key.Errorno.Display MeasuresContakt Error currentA

.Errorno.Display MeasuresContakt Error currentAutomatic startof cleaningFact User Fact User Fact UserE044Stability requirement forcalibration not fulf

Errorno.Display MeasuresContakt Error currentAutomatic startof cleaningFact User Fact User Fact UserE154Below lower alarmthreshold for periodexceeding

8 Diagnosis and corrective maintenanceDiagnosis• Diagnosis refers to the identification of instrument malfunctions and defects.Corrective maintenance:

Error Possible cause Tests and / or remedial measures Equipment, spare parts, personnelDisplay showsmeasured values but– value does not changeand /

2.4 Monitoring and safety featuresSafety featuresThe transmitter is protected against externalinfluences and damage by the followingdesign measures:•

8.2 Corrective maintenance of Liquisys M CPM 2238.2.1 Exploded viewPos. 10Netzteil 100 – 230 VAC230 V100 V115 VSicherungPos. 30 / SteckbrückeNetzspann

8.2.2 Disassembly of CPM 223• Consider potential effects on processwhen removing the instrument from service!• First pull off the terminal block(Pos.

8.2.4 Spare parts for CPM 223Pos. Designation Name Function Order number10 Power supply unit LSGA 100/115/230 V AC 5150031720 Power supply unit LSGD 2

8.3 Corrective maintenance Liquisys M CPM 2538.3.1 Exploded view100 VPos. 10Netzteil 100 – 230 V AC230 V115 VSicherungPos. 30 / SteckbrückeNetzspannun

8.3.2 Disassembly of CPM 253• Open and remove the connectioncompartment cover (Pos. 420).• Pull out the mains terminal (Pos. 470) tomake the device vo

8.3.4 Spare parts for CPM 253Pos. Designation Name Function Order number10 Power supply unit LSGA 100/115/230 V AC 5150031720 Power supply unit LSGD 2

8.3.5 Special case: replacement of central moduleNote:• After controller replacement all theeditable data are reset to thefactory settings.• The seria

8.6 Corrective maintenance of measuring system8.6.1 pH/redox transmitterCleaning the front panelTo clean the front panel, only use standardcleaning ag

8.6.5 Connecting lines and junction boxesCheck cables and connections for moisture.Moisture reduces the sensor slope. If thedisplay can not be called

9 AccessoriesMounting accessories• Weather protection cover CYY 101For mounting on field housing,for outdoor installation.Dimensions (H × W × D):320 ×

3 InstallationThe following procedure should be followed for a complete measuring system installation:• Installation or attachment of transmitter(see

Assemblies• DipFit W CPA 111Immersion assembly for pH andredox electrodes with bayonet system,applicable for up to 4 bar.Technical Information TI 112C

10 Technical dataGeneral specificationsManufacturer Endress+HauserProduct designation Liquisys M CPM 223Liquisys M CPM 253InputMeasured variables pH,

Output pH signal outputCurrent range 0 / 4 ... 20 mA, galvanically separated; error current 2.4 / 22 mAMax. resolution 700 digits / mALoad max. 500 ΩO

Accuracy pH measurementReference temperature +25 °CMeasured value resolution 0.01 pHDisplay deviation1max. 0.5 % of measuring rangeRepeatability1max.

11 AppendixVZNV2N2V3N3V4N4 N4V1N1CC13 C15C11 C12C14C16C25C23C24C22C32C34C36C35C31C33C21AA1A2A3A4A5 A6BB1B2B3B4B5FF1F2F3F4F5F6OO1O2O3 (3)O3 (2)O3 (1)O3

C19C17C18F8F7F9O335O336O334Z7Feedforward control =1at0 … 100%50%Store calibrationresults; no; newyesZero point is displayedGlass5.00...9.00 pHAntimon-

RFunction groupRELAYSelect contact to beconfigurdRel2; Rel3; Rel4;Rel1;R1R2 (6)R2 (5)R2 (4)R2 (3)R2 (2)R2 (1)FunctionSwitch off or on;onR2 (2)offR221E

Dropout delayentry0...2000 s0sR225Entry of alarm threshold(as an absolute value)150.0 °C-20.0...+150.0 °CR226Entry of derivative actiontime Tv(0.0 = n

12 Index!0 ...18,2122 ...219999 ...18,21AA-Function group . . . . .

LLED indicator . . . . . . . . . . . . . . . . . . . . . . . . 17Limit contactor . . . . . . . . . . . . . . . . . . . . 38, 43Limit contactor for con

3.2 DimensionsNote:There is a hole in the punching forPg 16 cable entry. It serves as apressure balance during air freightdispatching. Make sure that

SS-Function group . . . . . . . . . . . . . . . . . . . . . 50Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4, 5Safety features . .

More information about services and repairs:www.services.endress.comDeclaration of contaminationDear customer,Because of legal determinations and for

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