Extech Instruments RH25 Manuel utilisateur

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USERGUIDE

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HeatIndexPsychrometer

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ModelRH25

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2RH25‐EU‐ENv1.05/13

Introduction

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ThankyouforselectingtheExtechInstrumentsModelRH25HeatIndexPsychrometer.TheRH25

measuresTemperatureandRelativeHumidity(usingprecisioncapacitanceRHsensor).TheRH25

alsocalculatesanddisplaysHeatIndex,DewPoint,WetBulb,andWetBulbGlobetemperatures.

TheHighTemperatureAlarmfeaturealertstheuserwhenHeatIndexorWetBulbGlobelevels

exceeduser‐presetlimits.

DataHoldandMIN/MAX/AVGmemoryutilitiesmakeiteasiertorecallimportantdata.

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)tocheckforthelatestversionofthis

UserGuide,ProductUpdates,andCustomerSupport.

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Description

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Meter

1. Sensorarea

2. Displayarea(LCD)

3. POWERbutton

4. HOLDbutton

5. MODEbutton

6. Batterycompartmentonrearofinstrument

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Display

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TEMP Temperature

AIRTAirTemperature

RHRelativeHumidity

HIHeatIndex

DPDewPointtemperature

WBWetBulbtemperature

WB/HIWetBulbGlobetemperature

MAXMaximumreadingmemory

MINMinimumreadingmemory

AVGAveragereadingmemory

HOLDDataHold(freezesdisplay)

BATLowBatterysymbol

%PercentunitsforRHreadings

oDegreessymbolfortemperatureunits

EUsedtodisplaytemperatureunitsCorF

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3RH25‐EU‐ENv1.05/13

Operation

Keypad

POWER:SwitchthemeterONorOFF;alsousedtoentertheMAX/MIN/AVGmemorymode.

HOLD:PresstoenterDataHold(readingfreezesondisplay).PressagaintoexitDataHold.

MODE:Presstostepthroughthemeasurementmodes:TEMP(Temperature),RH(Relative

Humidity),HI(HeatIndex),DP(DewPoint),(WB(WetBulb),andHI/WB(WetBulbGlobe).

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Poweringthemeter

PressPOWERtoswitchmeterON.Themetershowsalldisplayiconsmomentarilyasitswitches

ONandthentheTEMPiconandthetemperaturereadingwilldisplay.Themeterwillalsoemita

chirpsoundasitswitchesON.

ToswitchthemeterOFF,pressandholdthePOWERbuttonforatleast2seconds.

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MAX/MIN/AVGMemory

WiththemeterpoweredON,pressPOWERbuttonmomentarily.TheMAXiconwillappearand

themeterwilldisplayonlythehighestreading.

PressPOWERagain;theMINiconwillappearandthemeterwillonlydisplaythelowestreading.

PressPOWERagain;theAVGiconwillappearandmeterwillonlydisplaytheaveragereading.

PressPOWERagaintoexit(theMAX/MIN/AVGiconswillswitchOFF).

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DataHold

WiththemeterpoweredON,presstheHOLDbuttonmomentarily.TheHOLDiconwillappear

andthecurrentreadingwillfreezeonthedisplay.PressHOLDagaintoexit(theHOLDiconwill

switchOFF).

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AutomaticPowerOFF(Sleep)Mode

ThemeterswitchesOFFautomaticallyafter15minutesofinactivity.Todefeatthisfeature

temporarily:WiththemeterswitchedOFF,presstheHOLDandPOWERbuttonssimultaneously

untilthemeterdisplaysthescreenshownbelow.Now,theusermustswitchthemeterOFF

manuallybypressingandholdingthePOWERbuttonforatleast2seconds.Notethatthenext

timethemeter’spoweriscycled,theAutoPowerOFFutilitywillagainbeactive.

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4RH25‐EU‐ENv1.05/13

SelectingoC/oFunitsofmeasure

WiththemeterOFF,pressandholdthePOWERandMODEbuttonssimultaneouslyuntiltheunit

ofmeasureappearsonthelowerrightcorneroftheLCD.UsetheMODEbuttontoselectthe

desiredunitofmeasure(oCoroF).PressPOWERtwicetosteppastthealarmsettingsuntilthe

normalmeasurementmodeisdisplayed.

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HighAlarmforHeatIndexandWetBulbGlobetemperature

1. WiththemeterOFF,pressandholdthePOWERandMODEbuttonssimultaneouslyuntilthe

temperatureunit‘C’or‘F’appearsonthelowerrightcorneroftheLCD(ifdesired,usethe

MODEbuttontoselectthedesiredunitofmeasure).

2. PressthePOWERbuttontosteptotheHeatIndex(HI)AlarmON/OFFdisplay.

3. UsetheMODEbuttontoselectON(A‐on)orOFF(A‐oF);seedisplayexamplesbelow:

4. PressPOWERtosteptotheHeatIndextemperatureAlarmlimitvalue.Seeexamplebelow:

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5. PresstheMODEbuttonmomentarilytochangethevalueinsmallsteps.Pressandholdthe

MODEbuttontoscrollquickly.

6. WhenthedesiredHeatTemperaturealarmlimitisdisplayed,pressthePOWERbuttonto

continuetotheWetBulbGlobetemperatureAlarmprogrammingscreens.

7. Repeatsteps3‐6toprogramtheWetBulbGlobetemperatureON/OFFandAlarmlimits.

UsethePOWERbuttonwhendonetostepbacktothenormaloperatingmode.

8. Thedefaultsettingsare27.8oC(82.0oF)forHeatIndextemperaturealarmlimitsand28.0oC

(82.4oF)forWetBulbGlobetemperaturealarmlimits

9. Wheneitheralarmlimitisexceeded,themetercontinuouslybeeps.Todeterminewhich

alarmissounding,checktheHI(HeatIndex)andWB/HI(WetBulbGlobe)temperature

displaystoseewhichunitofmeasureisblinking,thatwillindicatethetrippedalarm.

10. TosilenceanalarmtheusermusteitherswitchthealarmOFForchangeitsalarmlimitvalue.

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ErrorMessageDisplays

E‐2:HumiditySensorfailure.Replaceunit.

E‐3:TemperatureSensorfailure.Replaceunit.

E‐4:Temperatureover‐range;E‐5:Temperatureunder‐range

E‐6:Hardwarefailure.Replaceunit

5RH25‐EU‐ENv1.05/13

Appendices

AppendixA–HeatIndexbasedonTemperature(oF)vs.RelativeHumidity(%)

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Note:ItalicvaluesareHeatIndexbasedontheTemperature(leftcolumn)andRelativeHumidity(toprow).

oF90%80%70%60%50%40%

80oF858482818079

85oF1019692908684

90oF121113105999490

95oF13312211310598

100oF142129118109

105oF148133121

110oF135

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AppendixB–HeatIndexbasedonTemperature(oF)vs.DewPoint(DP)

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Note:ItalicvaluesareHeatIndexbasedontheTemperature(leftcolumn)andDewPoint(toprow).

oF55DP60DP65DP70DP75DP80DP85DP

80oF556065838487

85oF808081899399107

90oF848695100107117

95oF91101106114125

100oF113121131

105oF127138

110oF134145

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AppendixC–HeatIndexandHealthEffects

HeatIndexof80to90oF:Fatiguepossiblewithprolongedexposureandphysicalactivity

HeatIndexof90to105oF:Sunstroke,heatcramps,andheatexhaustionpossible

HeatIndexof105to130oF:Sunstroke,heatcramps,heatexhaustionlikely;heatstrokepossible

HeatIndexof130oForgreater:Heatstrokehighlylikelywithcontinuedexposure

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TheHeatIndexisdeterminedusingthedrybulbtemperatureandtherelativehumidity.Itis

basedonchartsavailablethroughtheU.S.NationalWeatherService.TheHeatIndexrepresents

howanaveragepersonfeelsrelativetoclimateconditions.Foragiventemperature,thehigher

thehumidity,thehighertheheatindexwillbe.

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6RH25‐EU‐ENv1.05/13

BatteryReplacement

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Whenthelowbatteryicon(BAT)appearsontheLCD,theCR‐2032lithiumbuttonbatterymust

bereplaced.Thebatterycompartmentislocatedontherearofthemeter.

1. Useacointoturnthebatterycompartmentcovercounter‐clockwisetoopen.

2. Notetheposition,orientation,andpolarityoftheexistingbatteryinstallation.

3. ReplacetheCR‐2032Lithiumbatteryfollowingthesameposition,orientation,and

polarity.

4. Replacethebatterycompartmentcoverandsecureitusingacointoturnitclockwise

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.

OtherBatterySafetyReminders

oNeverdisposeofbatteriesinafire.Batteriesmayexplodeorleak.

oNevermixbatterytypes.Alwaysinstallnewbatteriesofthesametype.

Specifications

Display  Multi‐functionLCD

Measurementranges

AirTemperature‐20to50oC(‐4to122oF)

HeatIndex  ‐46to205oC(‐50.8to401oF)

DewPoint ‐78to50oC(‐108.4to122oF)

WetBulb ‐20to50oC(‐4to122oF)

WetBulbGlobe‐25to54.5oC(‐13to130oF)

RelativeHumidity0to99.9%RH

Resolution 0.1oC/oF/%RH

Accuracy

Temperature ±0.6oC(1oF)

RelativeHumidity±3%RH@25oCfrom10to90%RHotherwise±5%RH

Powersupply 1xCR2032LithiumBattery

Dimensions 140x35x18mm(5.5x1.4x0.7")

Weight  50g(1.8oz.)

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

www.extech.com

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Extech Instruments RH390 Manuel utilisateur

Extech Instruments

Extech Instruments AUT10 Manuel utilisateur

Extech Instruments

Extech Instruments MO220 Manuel utilisateur

Extech Instruments

Extech Instruments MA410T Manuel utilisateur

Extech Instruments

Extech Instruments MN30 Manuel utilisateur

Extech Instruments

Extech Instruments 407736 Manuel utilisateur

Extech Instruments

Extech Instruments 407750 Manuel utilisateur

Extech Instruments

Extech Instruments HD450 Manuel utilisateur

Extech Instruments

Extech Instruments FM300 Manuel utilisateur

Extech Instruments

Extech Instruments 451181 Manuel utilisateur

Extech Instruments

Extech Instruments 461923 Manuel utilisateur

Extech Instruments

Extech Instruments AN310 Manuel utilisateur

Extech Instruments

Extech Instruments AN300 Manuel utilisateur

Extech Instruments

Extech Instruments 34135-A Manuel utilisateur

Extech Instruments

Extech Instruments 700 Series Manuel utilisateur

Extech Instruments

Extech Instruments TKG250 Manuel utilisateur

Extech Instruments

Extech Instruments AN250W Manuel utilisateur

Extech Instruments

Extech Instruments ExStik EC510 Manuel utilisateur

Extech Instruments

Extech Instruments MO257 Manuel utilisateur

Extech Instruments

Extech Instruments CG206 Manuel utilisateur

Extech Instruments

Extech Instruments MO300 Manuel utilisateur

Extech Instruments

Extech Instruments 341350A Manuel utilisateur

Manuels Instrument de mesure populaires d'autres marques

Suaoki

Suaoki D40 Manuel utilisateur

Elster

Elster BK-G1.6 Manuel utilisateur

Endress+Hauser

Endress+Hauser Deltabar FMD71 Manuel

Duratool

Duratool D03128 Manuel utilisateur

Vega

Vega VEGAPULS 65 Manuel utilisateur

Tonghui

Tonghui TH2618B Manuel utilisateur

Tenmars

Tenmars TM-801 Manuel utilisateur

MSR

MSR 145 Manuel utilisateur

TPS

TPS WP-82 Manuel utilisateur

ELMETRON

ELMETRON CP-511 Manuel utilisateur

PCB Piezotronics

PCB Piezotronics 003C30 Manuel utilisateur

Tenma

Tenma 72-10465 Manuel utilisateur

Endress+Hauser

Endress+Hauser Proline Promag 50 Caractéristiques techniques

Siemens

Siemens SITRANS F Coriolis FCT030 Manuel de la liste des pièces

KLINGER

KLINGER CMF V Series Manuel utilisateur

EXFO

EXFO FTB-2 Manuel d'exploitation et d'entretien

Keysight

Keysight M8290A Manuel utilisateur

ADTEK

ADTEK MW-5 Manuel utilisateur