Extech Instruments PH210 User manual

UserGuide

ModelPH210
pH/ORP/TemperatureMeter
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PH210-en-GB_v1.3 11/14
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Introduction
ThankyouforselectingtheExtechPH210pH/ORP/Temperaturemeter.Thismicroprocessor‐
baseddevicewithtactilepush‐buttonsisbatteryoperatedandidealforfielduse.ThePH210
simultaneouslydisplayspHormV(ORP)andsolutiontemperaturemeasurements.Thismeteris
shippedfullytestedandcalibratedand,withproperuse,willprovideyearsofreliableservice.
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Features
LCDdisplayshowspHormV(ORP)andsolutiontemperaturesimultaneously
pHmeasurementrange0to14.00pH
mV(ORP)measurementrange±1999mV
BNCinputsocketaccommodatesmostpHorORPelectrodes
Detachableprobeforeaseofuseinavarietyofmeasurementenvironments
Automatic(viaoptionaltemperatureprobe)orManualtemperaturecompensation
HighimpedancepHmeasurements
UserpHcalibrationability
DATAHOLDforfreezingdisplayedreading
RecordsMINMAXreadings
Selectablefunction(pHormV),Temperaturemeasurementunits(C/F),Autopoweroffdisable/enable,
andManualsolutiontemperaturecompensation
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MeterDescription

1. Measurementreading
2. Solutiontemperature
3. Unitofmeasure(pHormV)
4. Power/Escapebutton
5. Function/Hold/Uparrowbutton
6. Record(MIN/MAX)/Enterbutton
7. Setting/downarrowbutton
8. Batterycompartment(rearofmeter)
9. pHormVElectrodeBNCconnectorinput
10. OptionalATCprobeinputjack
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PH210-en-GB_v1.3 11/14
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GettingStarted
1. Calibratetheinstrumentoften,asdescribedinalatersection.NotethatonlyapHcalibration
isrequired;mV(ORP)iscalibratedasaby‐productofthepHcalibration.
2. Settheunitofmeasureforsolutiontemperature(oCoroF)asdescribedintheTemperature
UnitsSelectionsectionofthisguide.
3. DetermineifAutomaticorManualtemperaturecompensationwillbeemployed.Referto
theTemperatureCompensationsectionofthisguidefordetails.
4. Followtheinstructionsandelectrodecleaning/rinsingrecommendationscloselyasslight
deviationsintestprocedurescanhaveasignificanteffectontestresults.
Calibration(pH)
CalibrationConsiderations
ThispHmeterwasfactorycalibratedbymVsignalssimulatinganidealpHElectrodeina25°C
(77°F)environment.Anidealelectrodewillproduce0.0mVatpHof7.00inidealconditions.
Electrodesareimperfecthoweverandthetemperatureatwhichtestsaretakenisnotalways
ideal.Tomaintainahighlevelofaccuracy,andtoaccommodateanygivenapplication,choosea
calibrationmethodfromtheselectionsbelow:
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BasicCalibration(singlepointcalibration):pH7.00
CompleteCalibration(twopoints):pH7.00thenpH4.00orpH7.00thenpH10.00
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Themetershouldbecalibratedoncepertestingsession.Calibrationisperformedusingstandard
buffersolutionsatroomtemperature25°C(77°F).Calibrationshouldalwaysbeperformedusing
thepH7.00bufferfirst,followedbyasecondcalibrationbufferifdesired.SelectthepH4.00
bufferforthesecondcalibrationiftypicalmeasurementswillbelowerthanpH7.00oruseapH
10.00bufferforthesecondcalibrationiftypicalmeasurementswillbegreaterthanpH7.00.If
thedisplayshows“ERR”,cleartheexistingcalibrationdataasdiscussedinthepHCalibration
Procedurebelow,andperformthecalibrationagain.
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pHCalibrationProcedure
1. Placetheelectrodeinabuffersolution.PowerthemeterONandsimultaneouslypressand
releasetheRECandHOLDbuttons;‘CAL’appearsinthelowerleftcornerofthedisplay.
2. Usetheupanddownarrowbuttonstoscrollthroughthe4,7,and10calibrationpointsand
theClearfunction(CLr).OncethecorrectpointisselectedpresstheENTERbutton.The
readingwillflashforseveralsecondsandthenENDwillappear.Calibratetotheother
buffersinthesameway.
Note:Ifthereisadeviationofmorethan1pHunitfromthe4,7,or10pHbuffer,oriftheelectrode
slopeislow,theinstrumentwillassumeanerrorandabortthecalibration(ERRwillbedisplayed).In
thiscase,clearthecalibrationdata(seestep2above)andperformthecalibrationagain.Ifthe
problempersists,theelectrodemayrequirereplacing.
3. Formulti‐pointcalibration,usethearrowbuttonstoscrollthroughthecalibrationpointsas
describedinstep2.AlwayscalibratewithapH7bufferfirst,andthenfollowwithpH4or
pH10.Rinseelectrodeandprobewithdistilledwaterbetweencalibrationbuffers.
4. PressESCatanytimetoabortthecalibrationandreturntothenormaloperatingmode.
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PH210-en-GB_v1.3 11/14
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MeasuringpH
Important:Electrodesandtemperatureprobesshouldalwaysberinsedbeforeandbetweensamples
withdistilledwatertoremovealltracesofstoragesolution,processmedia,orprevioustestsolution.
1. ConnectthepHelectrodetothemeter(BNCconnectionatbottomofmeter).
2. Optionallyconnectthetemperatureprobe(Extechmodel850188only)tothejackatthe
bottomofthemeter.Thistemperatureprobeisusedforautomatictemperature
compensation(ATC).Manualtemperaturecompensationispossibleasexplainedbelow.
3. TurnthemeteronusingthePOWER/ESCbutton.
4. PressandholdtheFUNCTIONbuttontoselectpHunitsifnecessary.Theunitofmeasure
appearsontheLCD(pH).
5. Tochangethesolutiontemperatureunits(oC/oF)refertotheTemperatureUnitsSelection
sectionofthisguide.
6. RinsethepHelectrodeandtemperatureprobewithdistilledwater.
7. Placetheelectrodeandtemperatureprobe(ifATCistobeused)inthesolution.Allow30
secondsfortheelectrodeandATCprobetoreachthermalequilibriumwiththebuffer
solution.RefertotheTemperatureCompensationsectionformoreinformationon
AutomaticandManualTemperatureCompensation.
8. Afterthemeasurementstabilizes,viewthepHreadingandtemperaturesolution
temperatureonthedisplay.
9. Whenthetestiscompleterinsetheelectrodeandprobewithdistilledwater.
10. Storeelectrodesandprobeswhennotinuseaccordingtomanufacturer’srequirements.
MeasuringmV(ORP:OxidationReductionPotential)
Important:Electrodesandtemperatureprobesshouldalwaysberinsedbeforeandbetweensamples
withdistilledwatertoremovealltracesofstoragesolution,processmedia,orprevioustestsolution.
1. ConnecttheORPelectrodetothemeter(BNCconnectionatbottomofmeter).
2. Optionallyconnectthetemperatureprobe(Extechmodel850188only)tothejackatthe
bottomofthemeter.Thistemperatureprobeisusedforautomatictemperature
compensation(ATC)purposes.Manualcompensationispossibleasexplainedbelow.
3. TurnthemeteronusingthePOWER/ESCbutton.
4. PressandholdtheFUNCTIONbuttontoselectmVunitsifnecessary.Theunitofmeasure
appearsontheLCD(mVorpH).
5. Tochangethesolutiontemperatureunits(oC/oF)refertotheTemperatureUnitsSelection
sectionofthisguide.
6. RinsetheORPelectrodeandATCprobe(ifbeingused)withdistilledordeionizedwater.
7. PlacetheelectrodeandATCprobe(ifbeingused)inthesolution.Allow30secondsforthe
ORPelectrodeandATCprobetoreachthermalequilibriumwiththebuffersolution.Refer
totheTemperatureCompensationsectionformoreinformationonAutomaticandManual
TemperatureCompensation.
8. Afterthemeasurementstabilizes,viewtheORPreadinginmVonthemaindisplay.
9. Whenthetestiscompleterinsetheelectrodeandprobewithdistilledwater.
10. Storeelectrodesandprobeswhennotinuseaccordingtomanufacturer’srequirements.
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PH210-en-GB_v1.3 11/14
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Automatic(ATC)andManualTemperatureCompensation
ThePH210automaticallycompensates(ATC)forsolutiontemperaturedeviationswhenthe
Model850188temperatureprobe(insertedatbottomofmeter)isplacedinthemeasurement
solution.Thetemperatureofasolutionisdisplayedonthemeter’slowerLCDline.
Tomanuallycompensateforsolutiontemperaturedeviationsaseparatethermometermustbe
placedinthesolutiontomonitorthesolution’stemperature;thenproceedasfollows:
1. PressandholdtheSETTINGbuttonfor5seconds.ThedisplaywillshownoATC.
2. PressENTERandnoATCwillflash(indicatingtheautomaticcompensationisswitchedOFF
andManualTemperatureCompensationisactive).NotethatwhennoATCisnotflashing
AutomaticTemperatureCompensationmodeisactive.
3. Usetheupanddownbuttonstomanuallyadjustthetemperaturevaluetomatchthe
solutiontemperature(asdeterminedbythesolutionthermometer).Oncethetemperature
isprogrammed,pressENTERtosavethedataandthenpressESCtoreturntothenormal
operatingmode.
4. Ifthesolutiontemperaturechanges,themanualtemperaturecompensationprocedure
mustberepeated.
TemperatureUnits(C/F)Selection
Tochangethetemperatureunits(oC/oF):
1. Poweronthedevice
2. PressandholdtheSettingbuttonfor5seconds,untiltheSettingmodeisaccessed
3. PresstheSettingbuttonagain;eitheranForaCwillbedisplayed
4. Usetheuparrowbuttontoselectthedesiredunitofmeasurefortemperaturesolution
5. PressENTERtosavethesetting
6. PressESCtoreturntothenormalmodeofoperation
AutomaticPowerOFFEnable/Disable
Toconservebatterypower,theinstrumentautomaticallyshutsoffafterapproximately10
minutesofinactivity.Todisableorenablethisfeature,followthestepsbelow:
1. Poweronthedevice
2. PressandholdtheSETTINGbuttonfor5secondsuntiltheSettingmodeisaccessed
3. UsetheSETTINGbuttontosteptothescreenthatshowseitherOFFYESorOFFNO
4. UsetheuparrowbuttontoselectYES(AutoPowerOFFactive)orNO(AutoPowerOFFnot
active)
5. PresstheENTERkeytosavethesettingandtoreturntothenormaloperatingmode
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PH210-en-GB_v1.3 11/14
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MIN/MAXDataRecording(REC)mode
Thisinstrumenthastheabilityrecordthehighest(MAX)andthelowest(MIN)readings
recorded.ReadingsareretainedevenaftertheinstrumentisswitchedOFF.
1. MomentarilypresstheRECbutton(RECwillbedisplayedattheupperright).
2. PressRECagain.REC/MAXwillbedisplayedalongwiththemaximumreading.
3. PressRECagaintodisplaytheMINreading.REC/MINwilldisplayalongwiththeminimum
reading.
4. TodeleteeithertheMAXortheMINreading,presstheHOLDbuttonwhileeitherthe
REC/MAXortheREC/MINiconsaredisplayed.
5. PressandholdRECfor2secondstoexitandtoreturntothenormaloperatingmode.The
RECandMAX/MINiconswillswitchOFF.
Specifications
Measurements/ParametersRange(Resolution)Accuracy
SolutionTemperaturemeasurement0to100oC(32to212oF)0.8oC(±1.5oF)
pHmeasurement
0.00to14.00pH(0.01pH)±0.04pH
mV(ORP)measurement
±1999mV±0.5mV
Note:AccuracydoesnotincludepHbuffertemperaturecoefficient
AutomaticTemperature
Compensation(ATC)range
0to65oC(32to149oF)
ManualTemperatureCompensation
Adjustmentrange
0to100oC(32to212oF)
Power9voltalkalinebattery
DisplayLCDdisplayforsimultaneouspHormVand
temperaturereadingsplusprogrammingmenu
parametersandicons
OperatingTemperatureandRelative
Humidity
0to50oC(32to122oF);<80%RH
pHCalibrationpoints4.00,7.00,10.00(1,2,or3pointcalibrationcanbe
performed)
AutoPowerOFF10minutesfromlastkey‐press(canbedisabled)
LowBatteryIndicationBatterydisplayiconwillflashwhenbatteryrequires
replacing
Dimensions/Weight135x60x33mm(5.3x2.4x1.3”);200g(7.1oz.)

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PH210-en-GB_v1.3 11/14
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BatteryReplacement
The9Vbatterythatpowerstheinstrumentrequiresreplacingwhenthebatteryiconflasheson
thedisplay.Toreplacethebatteryfollowthestepsbelow:

1. Disconnecttheelectrode/probefromtheinstrument.
2. OpentherearbatterycompartmentusingascrewdrivertoremovethetwoPhillipshead
screwsthatsecurethecompartment.
3. Carefullyremovetheoldbatteryfromthecompartmentlidchamberandgentlyunsnap
thebattery’sterminalsfromthewired(red/black)connectors.
4. Installanew9Vbatterybysnappingthebatteryterminalsontothewiredconnectors
(observingcorrectpolarity)andinsertingthebatteryintothecompartmentlidchamber.
5. Installthecompartmentlidchamberintothemeterhousingandsecurewiththetwo
screws.


Neverdisposeofusedbatteriesorrechargeablebatteriesinhouseholdwaste.
Asconsumers,usersarelegallyrequiredtotakeusedbatteriestoappropriate
collectionsites,theretailstorewherethebatterieswerepurchased,orwherever
batteriesaresold.

Disposal:Donotdisposeofthisinstrumentinhouseholdwaste.Theuserisobligatedtotake
end‐of‐lifedevicestoadesignatedcollectionpointforthedisposalofelectricalandelectronic
equipment.

ElectrodeMaintenanceandTroubleshooting
Mostmeasurementdifficultiesarecausedbytheelectrode.Carefulhandlingandproperstorageof
theelectrodewillincreasemeasurementaccuracyandelectrodelife.
Electrodesshouldberinsedoftentoremovealltracesofstoragesolution,processmedium,or
previoustestsolution.
ElectrodeStorage
TheelectrodeshouldbestoredinasoakerbottleorwettingcapfilledwithpH4buffer.Never
storeanelectrodeindistilledordeionizedwaterasthiswillcausemigrationofthefillsolution
fromtheelectrode.
ElectrodeCleaning
Thetypeofelectrodecoatingthatoccursovertimewilldeterminethecleaningmethod.Soft
coatingscanberemovedbyvigorousstirringorbyusingasquirtbottle.Organicchemical
coating(hardcoatings)shouldbechemicallyremoved.Onlyinextremecasesshouldthebulbbe
cleanedmechanically.
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PH210-en-GB_v1.3 11/14
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TroubleshootinganElectrode
SymptomCauseRecommendation
Longresponsetimeor
readingdrift
CloggedJunctionSoakin4.07MPotassiumChloride(KCl)
@60oCfor30minutes.
StrongAlkaline
measurement
Soakin0.1MHCLovernight.
DeterioratedGellayerReplaceelectrode.
Proteincoatingonelectrode
surface
Soakin1gmPepsindissolvedin100ml
of0.1mHCLfor30minutesoras
needed.
Oil,paint,dyes,suspended
solidsetc.areonsensor
Rinseelectrodealternatelywitha
materialssolventandabuffer7.00.
Organicsolventsarecoating
thesensor
Organicmolefractionhastobeless
than50%toassurereasonablereadings.
Limittimeofmeasurement.Keepprobe
inthe7.0bufferbetweenreadings.
DehydratedmembraneReadsolutionfordrybulbbelow:
DryBulbLongtermstoragewithout
wetting
Soakelectrodetipinwettingcapfilled
with1ml7.00bufferfor24to48hours
StaticChargeWipingelectrodesRinseelectrodein7.0bufferandblot.
Donowipeelectrode.
Samereadingsin
differentbuffersand
samples
CrackedorbrokenbulbReplaceelectrode.Usebulbguard.
Avoidplungingelectrodetobottomof
containerandspinningbars.Wetting
capwillprotectbulbbetweentests.
ErraticLCDdisplaySampleshavelowionic
strength(lackssalt);e.g.
distilled,de‐ionized,boiled,
lakewater(highpressure)
Foreach50mlofsampleadd1drop
(50uL)ofSAT.KCl(NoalterationinpH
willoccurusinginertKCl).

Copyright©2014FLIRSystems,Inc.
Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform
www.extech.com
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