Extech Instruments RH210 User manual

UserGuide



Hygro‐Thermometer



ModelRH210



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RH210-en-GB_V1.0 12/14

Introduction

ThankyouforselectingtheExtechRH210Hygro‐Thermometerwhichsimultaneouslydisplays

RelativeHumidity,Temperature,andDewPoint.Measurementsaremadewitharemote

electrode.Thisdeviceisshippedfullytestedandcalibratedand,withproperuse,willprovide

yearsofreliableservice.Pleasevisitourwebsite(www.extech.com)forproductregistration,

support,andtocheckforthelatestversionofthisUserGuide.



Features

AirTemperature,RelativeHumidity,andDewpointmeasurements

Detachableprobeforeaseofuseinavarietyofmeasurementenvironments

Fasthumiditymeasuringresponsetime

Auto‐offfeaturetosavebatterylife

LCDdisplayshowsTemperatureand%RHorDewpointsimultaneously

DATAHOLDforholdingdisplayedreading

RecordandViewMin/Maxreadings

ProgrammingmodeforselectingoC/oFtemperatureunitsandenabling/disablingtheauto

poweroffutility

Lowbatteryindicator



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RH210-en-GB_V1.0 12/14

MeterDescription



1. HumidityorDewPointreading

2. Temperaturereading

3. Powerbutton

4. DataHoldbutton

5. Recordbutton

6. Functionbutton

7. Probeconnection

8. SETbutton(underflap)

9. Probe



NOTE:Batterycompartmentonbackofmeter



MeterPower

Themeterispoweredbyone9Vbattery;pressthePowerbuttontoswitchthemeterON.Press

andholdthePowerbuttonforatleast2secondstoswitchthemeterOFF.

WhenpoweringON,themeterperformsaself‐testwherebytheLCDdisplaycountsdowntozero

beforestabilizingatthenormaloperationscreen.

IfthemeterdoesnotswitchONwhenprompted,orifthelowbatteryiconisshowingontheLCD,

pleasereplacethebattery.Refertothebatteryinstallationsectionfordetailedinformation.

TheAutoPowerOFFfeatureswitchesthemeterOFFaftera10‐minuteperiodofinactivity.To

defeatthisfeaturepleaserefertotheSetupModesection.

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RH210-en-GB_V1.0 12/14

Measurements

TakingRelativeHumidity/DewPointandAirTemperatureMeasurements

1. Connecttheelectrodetotheprobeinputsocketlocatedonthebottomofthemeter.

2. SwitchthemeterONbypressingthePowerbutton.

3. ThedisplaywillindicateAirtemperatureonthelowerleft(insmalldigitformat)and

either%RHorDewpointtemperatureontheupperright.

4. PresstheFunctionbuttontoselecteither%RHorDewPointTemperature.

5. PresstheHoldbuttontofreezethecurrentvaluesonthedisplay.

6. PresstheRECbuttontoaccesstheMIN‐MAXRecordingmode.Seedetailedinformation

intheMIN‐MAXRecordingsection.

7. PressandholdthePowerbuttonfor2secondstoturnthemeterOFF.



DataHold

1. PresstheHOLDbuttontofreezethedisplayedvalue.

2. TheLCDwilldisplayHOLDalongwiththeheldreading.

3. PresstheHOLDbuttonagaintoreleasethedataholdfunction.TheHOLDdisplayicon

willswitchOFF.



MIN‐MAXRecording

Whenselected,theDataRecordingfunctionrecordstheMIN(lowest)andMAX(highest)

readings:



1. PresstheRECbuttononcetostartrecordingMINandMAXreadings.TheRECindicator

willappearonthedisplay.

2. PressRECagainandRECMAXwilldisplayonthescreenalongwiththemaximumvalue.

3. PressRECagainandthedisplaywillshowRECMINalongwiththeminimumvalue.

4. ToviewtherealtimereadingswhilecontinuingtotracktheMINandMAXvalues,press

theHOLDbuttonwhileeithertheRECMAXorRECMINiconsarevisible;nowonlythe

RECiconwillbevisible.Themeterisnowcontinuingtomonitorthehighest(MAX)and

lowest(MIN)readingsbutisdisplayingrealtimemeasurements.ToviewtheMAXand

MINvaluesagainusetheRECbuttonasdescribedearlier.

5. ToexittheRecordmodeandresettheMINandMAXvalues,pressandholdtheREC

buttonforatleast2seconds.Thedisplaywillreturntothenormaloperatingmodeand

theREC/MAX/MINiconswillalldisappear.



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RH210-en-GB_V1.0 12/14

Setupmode

Note:TheSETUPModecannotbeaccessediftheHOLDortheMIN‐MAXfunctionisactive.



1. Opentheflaponthemeter’srightsidetoaccesstherecessedSETbutton.

2. UseapapercliporsmallscrewdrivertopressandholdtheSETbuttonforatleast3seconds

untilthemeterbeepstwice.

3. The‘Code1000’promptshouldappearonthedisplay.Proceedwiththestepsbelow:



ChangetheTemperatureUnitsofMeasure(F/C)

With‘Code1000’showingonthedisplay(asexplainedabove),followthestepsbelow:

1. PressRECandthelowerdisplaylinewillshowtwounitsofmeasureicons.Thesmaller

digitsindicatetheunitofmeasurethatwillbeadoptedwhentheseprogrammingsteps

arecomplete.

2. ToselectF,presstheFunctionbuttonsothatthenumber“1”appearsandthenpress

REC.

3. ToselectC,presstheFunctionbuttonsothatthenumber“0”appearsandthenpress

REC.

4. PresstheHOLDbuttontosavethesettingandreturntothenormaloperatingmode.The

displayshouldnowbeindicatingtheprogrammedunitofmeasure.



Enable‐DisabletheAuto‐PowerOFFutility

With‘Code1000’showingonthedisplay(asexplainedabove),followthestepsbelow:

1. PresstheRECbuttonandthenpresstheSETbutton(briefly)toaccesstheAuto‐Off

mode.

2. ToenabletheAuto‐OFFmode,presstheFunctionbuttontoindicatea“1”onthedisplay,

andthenpresstheRECbutton.

3. TodisabletheAuto–OFFmode,presstheFunctionbuttontoindicatea“0”onthe

display,andthenpresstheRECbutton.

4. PresstheHOLDbuttontosavethesettingandreturntothenormaloperatingmode.



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RH210-en-GB_V1.0 12/14

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. SwitchthemeterOFF.

2. Disconnecttheprobefromtheinstrument.

3. OpentherearbatterycompartmentusingascrewdrivertoremovethetwoPhillipshead

screwsthatsecurethecompartment.

4. Carefullyremovetheoldbatteryfromthecompartmentandgentlyunsnapthebattery’s

terminalsfromthewired(red/black)connectors.

5. Installanew9Vbatterybysnappingthebatteryterminalsontothewiredconnectors

(observingcorrectpolarity)andinsertingthebatteryintothecompartment.

6. Installthebattery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.



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RH210-en-GB_V1.0 12/14

Specifications



GeneralSpecifications

MeasurementsTemperature,RelativeHumidity,Dewpointtemperature

DataholdDataholdfreezesdisplayedreading

MemoryrecallMin/Maxreadingsstoreandrecall

AutopoweroffMeterswitchesoffafter10minutes(canbedisabled)

Samplerate0.8second(approx.)

OperatingconditionsTemperature:0to50°C(32to122°F);Humidity:<85%RH

Probe:0to95%RH

Batterypower9Valkalinebattery

PowerConsumptionApprox.6.0mADC

Weight295g(0.65lbs.)includingbatteries&probe

DimensionsMeter:135x60x33mm(5.3x2.4x1.3")

Probe:197mm(7.8”)length;15mm(0.6”)diameteroftip



ElectricalSpecificationsat23°±5°C(73°F±9°F)

MeasurementRangeResolutionAccuracy

Relativehumidity10%to95%RH0.1%RH

>70%RH:+/‐(3%rdg+1%RH)

<70%RH:+/‐3%RH

DewPoint

‐25.3°Cto48.9°C0.1°CCalculatedfrom

Temperatureand%RH

‐13.5°Fto120.1°F 0.1°F

Temperature

0°Cto50°C0.1°C±0.8°C

32°Fto122°F0.1°F±1.5°F

Note:AbovespecificationtestsconductedunderanRFfieldstrengthlessthan3V/Mand

frequencylessthan30MHz



Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

www.extech.com



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