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QualitymadebyEndress+HauserISO9001pH/RedoxTransmitterCPM280Battery-drivenpocketmeterforpHandredoxmeasurementApplicationCPM280isacompactpocketmeterformeasuringpHvalueandredoxpotential.ItissuitableforpH,redoxandtemperaturemeasurementinthefollowingfieldsofapplication:•Sewagetreatmentplants•Drinkingandsurfacewater•LaboratoryandfieldmeasurementYourbenefits•Comfortableoperation:–Clearmulti-functiondisplaywithuserguidance•Precisemeasurement:–AutomatictemperaturecompensationviathepHcombinationelectrodewithbuilt-intemperaturesensor(NTC,Pt1000)•Flexiblecalibration:–Conventionalcalibrationwithtwobuffersolutions–Fullyautomatictwo-pointorthree-pointcalibrationwithpre-definedbuffersolutionsaccordingtoDIN19266–Fullyautomatictwo-pointorthree-pointcalibrationwithtechnicalbuffersolutionsbyE+H•Safeandcost-effectiveoperation:–Longservicelifewithfourcommonlyused1.5Vbatteries:approx.3000h–Automaticpower-down–Dustandwater-proofhousing(IP66)–3-yearwarrantyforthemeasuringinstrumentCPM2802Endress+HauserFunctionandsystemdesignMeasuringprinciplepHmeasurementThepHvalueisusedasaunitofmeasurementfortheacidityoralkalinityofamedium.ThemembraneglassoftheelectrodesuppliesanelectrochemicalpotentialwhichisdependentuponthepHvalueofthemedium.ThispotentialisgeneratedbytheselectivepenetrationofH+ionsthroughtheouterlayerofthemembrane.Anelectrochemicalboundarylayerwithanelectricpotentialformsatthispoint.ThemeasuringtransmitterconvertsthemeasuredvoltageintothecorrespondingpHvalueusingtheNernstequation.RedoxmeasurementTheredoxpotentialisaunitofmeasurementforthestateofequilibriabetweenoxidisingandreducingcomponentsofamedium.RedoxpotentialismeasuredsimilarlytothepHvalue.AplatinumelectrodeisusedinsteadofpH-sensitivemembraneglass.MeasuringsystemThemeasuringsetcomprises:•1CPM280pocketmeter•1NorylabCPS51pHcombinationelectrodewithbuilt-inPt1000temperaturesensor,1.5mfixedcableandawater-proofDINplug•1setofbuffersolutions:pH4,pH7,pH10,50mleach•1plasticbowl50ml•1standusedaselectrodeholder•4alkali-manganesebatteries1.5V•1solidplasticcasemadefromPPwithintegratedmeasuringpointandseparatepocketforpHelectrodeandaccessories•OperatingInstructionsBA346CA4InputMeasuredvaluespH,redox,temperatureMeasuringrangesInputimpedance1x1012Ω(atnominaloperatingconditions)Inputcurrent1x10–12A(atnominaloperatingconditions)PowersupplySensorconnectionviafixedcableSupplyvoltagepH:–2...16Redox:–1999...+1999mVTemperature:–5...+105°C(transmitter)–5...+80°C(NorylabCPS51sensor)Batteries4x1,5Valkali-manganesebatteries,typeAAServicelifeapprox.3000hCPM280Endress+Hauser3PerformancecharacteristicsReferencetemperature25°CMeasuredvalueresolutionMaximummeasurederroraTemperaturecompensationEnvironmentStoragetemperature–25...+55°CRelativehumidity100%Climateclass2IngressprotectionIP66ElectricalprotectionclassIIIElectromagneticcompatibilityInterferenceemissionandinterferenceimmunityaccordingtoDINEN50081-1/50081-2ProcessProcesstemperaturepH:–2.00...+16.000.01pHRedox:–1999...+1999mV1mVTemperature:–5.0...+105.0°C±0.1Ka)accordingtoDINIEC746part1,atnominaloperatingconditionspH:±0.01pHatresolution0.01pHRedox:±0.3mVatresolution0.1mV(onlyvalidfortemperaturerange15...35°C)±1mVatresolution1mVTemperature:NTC30Pt1000±0.1K±0.5Kat0...15°C±0.1Kat15...35°C±1.0Kat35...55°C–5...+105°C(transmitter)–5...+80°C(NorylabCPS51sensor)–5...+105°C(operatingtemperatureofthetransmitter)–5...+80°C(temperatureofthemediumNorylabCPS51sensor)CPM2804Endress+HauserMechanicalconstructionDimensionsWeightapprox.0.3kgMaterialsMeasuringvaluedisplayLCdisplay,twolinesHumaninterfaceDisplayelementsOperatingelementsCPM280pocketmeterHxWxD:172x80x37mmNorylabCPS51sensorLxØ:120x12mm(shaft)CaseHxWxD:115x355x305mmCPM280pocketmeterHousing:Keys:PPsiliconNorylabCPS51sensorMembraneglass:Temperaturesensor:UNITECzirconiumC07-CPM280xx-07-06-00-xx-001.EPS ! # ! $ % ! % ! # & ’$ ( ) 12354MCALRUN/ENTERARICPM280Endress+Hauser5Certificatesandapprovals approvalDeclarationofconformityTheproductmeetsthelegalrequirementsoftheharmonisedEuropeanstandards.Endress+Hauserconfirmscompliancewiththestandardsbyaffixingthe symbol.QualitycertificateQualitycertificateDependingontheordercodeyoureceiveaqualitycertificate.WiththecertificateEndress+Hauserconfirmscompliancewithalltechnicalregulationsandthesuccessfultestingindividuallyforyourproduct.OrderinginformationOrdernumberpHpocketmeterCPM280Orderno.:51510538AccessoriesElectrodes❑pHcombinationelectrodewithbuilt-intemperaturesensor,1.5mfixedcableandwater-proofDINplug;applicationrange1...12pH,0...80°C;orderno.:CPS51-3EK2FDA❑PlatinumredoxelectrodewithNSAplug-inheadandplasticshaft;applicationrange1...12pH,0...80°C;orderno.:CPS52-0PK2NSAConnectioncables❑ConnectioncableforconnectingpHorredoxelectrodeswithGSA/NSAplug-inheads;orderno.:C