Extech Instruments TM20 Manuale utente

1TM20-TM25-EU-EN V1.6 4/13

USERGUIDE

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PortableThermometers

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ModelTM20thermometerwithstandardprobe

ModelTM25thermometerwithpenetrationprobe

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2TM20-TM25-EU-EN V1.6 4/13

Introduction

ThankyouforselectingthisExtechPortableThermometerforhomeuse.Thisdeviceisintended

foruseinmeasuringthetemperatureofair,liquid,paste,orsemi‐solidmaterials.TheTM20

usesastandardtemperatureprobewhiletheTM25isequippedwithapenetrationprobefor

insertionintomaterialsundertest.Thismeter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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Safety

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InternationalSafetySymbols

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Thissymbol,adjacenttoanothersymbolorterminal,indicatestheusermustrefertothe

manualforfurtherinformation.



Thissymbol,adjacenttoaterminal,indicatesthat,undernormaluse,hazardousvoltages

maybepresent



Doubleinsulation

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GeneralSafety

oPleasereadallsafetyandinstructionalinformationbeforeusingtheseproducts.

oTheseproductsareintendedforhomeuseonlyonair,liquid,pastes,andsemi‐solid

materials.

oUnauthorizedrepairs,modifications,orotherchangestotheproductsarenotsupported.

oThisproductisnotintendedforuseinmedicalpractice.

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3TM20-TM25-EU-EN V1.6 4/13

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Caution!RiskofInjury!

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oKeeptheseproducts,theirprobes,andbatteriesoutofthereachofchildrenandpets

oUseextremecautionwhenhandlingtheprobes

oBatteriesmustnotbeplacedinfire,shortcircuited,takenapart,ordischarged.Riskof

explosion!

oBatteriescanbefatalifswallowed.Contactmedicalemergencypersonnelifbatteriesare

swallowed.

oBatteriescontainharmfulacids.Lowbatteriesshouldbechangedassoonaspossibleto

preventdamagecausedbyleakingbatteries.

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ProductSafety!

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oDonotplacetheseproductsnearextremetemperatures,vibration,orshock

oOnlytheprobesareheatresistantto392oF(200oC)fortheTM25probeandto158oF(70oC)

fortheTM20probe,notthemetersthemselves

oNeverholdaprobedirectlyinoroverfire

oDonotimmersethemetersinanyliquid

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4TM20-TM25-EU-EN V1.6 4/13

Description

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MeterDescription

1. Meter

2. LCDdisplay

3. PowerON/OFFbutton

4. MAX/MINbutton

5. ALARM/SETbutton

6. Temperatureunits/uparrowbutton

7. Meterstand/base

8. Sensorcabling

9. Sensortips

10. Probemountingbracket

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Note:Wallmountaccessholeand

magnetonrearofinstrumentnot

pictured

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AdvancedDisplaySymbols

1. Lowbatterysymbol

2. Alarmsymbol

3. FlashingAlarmAlert

4. HighAlarmsymbol

5. LowAlarmsymbol

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5TM20-TM25-EU-EN V1.6 4/13

Operation

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DisplayProtectiveFoil

Themeter’sdisplayisshippedwithaprotectivefoilcovering.Pleaseremovecarefullybefore

use.



Poweringthemeter

Openthebatterycompartmentbylooseningthetwoscrewslocatedonthebackofthemeter

(oneithersideofthemagnet).InsertanewCR20323Vlithiumbuttonbatteryandclosethe

cover.Ifabatteryisalreadyinstalled,removetheinsulationstripsothatthebatterycanmake

propercircuitcontact.

Theinstrumentisnowreadyforuse.PresstheON/OFFkeyoncetopowerthemeter.The

meter’sprevioussettingswillbepreserved.

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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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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.



SelectingoC/oFunitsofmeasure

PresstheoC/oFkeytoselectthedesiredtemperatureunitofmeasure.

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MAX‐MINandHOLDFunction

Tofreeze(hold)thedisplayedreading,presstheMAX/MINkey.Thecurrentreadingwillbeheld

onthedisplayandtheHOLDdisplayiconwillbevisible.PressMAX/MINagaintoviewthe

Maximumreadingcapturedsincethelastreset;theMAXindicatorwillbevisiblealongwiththe

MAXreading.PressMAX‐MINagaintoviewtheMinimum(MIN)temperaturereading;theMIN

iconwillbevisiblealongwiththelowestreadingcapturedsincethelastreset.ToresettheMAX

andMINvaluespressandholdtheMAX‐MINbuttonfor3secondswhiletheMAXorMINiconis

visible.ToreturntonormaloperationpresstheMAX/MINkeyagain;theHOLD‐MIN‐MAX

indicatorsshouldnowbeoff.



6TM20-TM25-EU-EN V1.6 4/13

TemperatureAlarms

Sethigh/lowalarmlimitsandthemeterwillaudiblyandvisuallyalerttheuserifeitherlimitis

exceeded.Tosetthealarmvalues,followthesesteps:

1. PresstheALARM/SETbuttononcefromthenormaloperatingmode;theupperlimitvalue

anditssymbol(uparrow)willflash.

2. Setthetemperaturelimitbypressingthe▲button(pressandholdforfastscrolling).

3. NowusetheMAX/MINbuttontoactivate/deactivatethealarm(alarmsymbolwillappear

intheupperrighthandcorneroftheLCDwhenactivated).

4. VerifythesettingbypressingALARM/SET.

5. Performthesamestepsforthelowalarmlimit.

Aftersettingthealarms,theupperandlowerlimitsymbols(▲▼)willbedisplayedontheLCD

indicatingthatanupperandaloweralertvaluehasbeenset.Ifthemeasuredtemperature

exceedseitherlimit,thealarmbeeperwillsoundfor1minute.Thealarmbeepericonandthe

correspondingarrowwillflash.Pressinganybuttonwillswitchoffthealarm.

Whenthetemperaturereturnstothedesiredrangetheaudiblealarmwillstopsounding.The

arrowwillremainflashinghowevertoshowthatthetemperaturewashigherorlowerthanaset

valueatleastonceinthepast.Pressthe▲buttontoswitchOFFtheflashingarrow.



Specifications

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Display  Multi‐functionLCD

MeasurementrangeTM20:‐40to70oC(‐40to158oF)

TM25:‐40to200oC(‐40to392oF)

Resolution 0.1oC/oF

Accuracy 0.5oC:0oto24oC

1.0oC:‐20oto‐1oCand25oto49oC

2.0oC:‐40oto‐21oCand50oto200oC

0.9oF:32oto75oF

1.8oF:‐4oto31oFand76oto120oF

3.6oF:‐40oto‐5oFand121oto392oF

ProtectionsafetyratingIP65ratingonmeterandsensors

LowbatteryindicationBatterysymbolappearsontheLCD

Powersupply CR20323Vbuttonbattery

MeterDimensions86(L)x57(H)x30(D)mm/3.4(L)x2.2(H)x1.2(D)"

Cablelength TM20cable:209m(9.6ft.)

TM25cable:1.5m(5ft.)



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

www.extech.com

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