Extech Instruments MN62 Manual de usuario

USERGUIDE



TrueRMSDigitalMultimeter

WithNon‐ContactVoltageDetectorandLowPassFilter



ModelMN62

MN62‐en‐GB_V1.112/15

Introduction

ThankyouforselectingtheModelMN62TrueRMSAuto‐rangingMultimeter.Thismetermeasures

AC/DCVoltage,AC/DCCurrent,VariableFrequencyVoltage(VFC),Resistance,Capacitance,

Frequency,DutyCycle(AConly),DiodeTest,andContinuity;aNon‐ContactVoltageDetectoris

alsobuilt‐in.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,ProductRegistration,andCustomerSupport.



Features

TrueRMSACMeasurements

Non‐contactVoltageDetector

4000CountMultifunctionLCDDisplay

AutomaticandManualRanging

MAX‐MINReadingMemory

RelativeMode

DataHold

VariableFrequencyVoltagemode(VFC)offerslowpassfilter

AutomaticPowerOFF(APO)

Rugged,BatteryOperated,andPortable



MN62‐en‐GB_V1.112/15

Safety

TheMN62isdesignedincompliancewithstandardssuchasIEC/EN61010‐1,pollutiongradeII,

overvoltageCATIII600Vanddoubleinsulationstandards.Pleasecomplywiththeinstructions

providedinthisguideotherwisetheprotectionprovidedbytheinstrumentmaybeaffected.

Thissymboladjacenttoanothersymbol,terminaloroperatingdeviceindicates

thattheoperatormustrefertoanexplanationintheOperatingInstructionsto

avoidpersonalinjuryordamagetothemeter.

ThisWARNINGsymbolindicatesapotentiallyhazardoussituation,whichifnot

avoided,couldresultindeathorseriousinjury.

ThisCAUTIONsymbolindicatesapotentiallyhazardoussituation,whichifnot

avoided,mayresultdamagetotheproduct.

Thissymboladvisestheuserthattheterminal(s)somarkedmustnotbe

connectedtoacircuitpointatwhichthevoltagewithrespecttoearthground

exceeds(inthiscase)600VACrmsorDC.

Thissymboladjacenttooneormoreterminalsidentifiesthemasbeing

associatedwithrangesthatmay,innormaluse,besubjectedtoparticularly

hazardousvoltages.Formaximumsafety,themeteranditstestleadsshould

notbehandledwhentheseterminalsareenergized.

Thissymbolindicatesthatadeviceisprotectedthroughoutbydouble

insulationorreinforcedinsulation.



PERIEC1010OVERVOLTAGEINSTALLATIONCATEGORY

OVERVOLTAGECATEGORYI

EquipmentofOVERVOLTAGECATEGORYIisequipmentforconnectiontocircuitsinwhich

measuresaretakentolimitthetransientovervoltagestoanappropriatelowlevel.

Note–Examplesincludeprotectedelectroniccircuits.

OVERVOLTAGECATEGORYII

EquipmentofOVERVOLTAGECATEGORYIIisenergy‐consumingequipmenttobesuppliedfrom

thefixedinstallation.

Note–Examplesincludehousehold,office,andlaboratoryappliances.

OVERVOLTAGECATEGORYIII

EquipmentofOVERVOLTAGECATEGORYIIIisequipmentinfixedinstallations.

Note–Examplesincludeswitchesinthefixedinstallationandsomeequipmentforindustrialuse

withpermanentconnectiontothefixedinstallation.

OVERVOLTAGECATEGORYIV

EquipmentofOVERVOLTAGECATEGORYIVisforuseattheoriginoftheinstallation.

Note–Examplesincludeelectricitymetersandprimaryover‐currentprotectionequipment

WARNING

CAUTION

MAX

600V

MN62‐en‐GB_V1.112/15

CAUTIONS

Improperuseofthismetercancausedamage,shock,injuryordeath.Readandunderstandthisuser

manualbeforeoperatingthemeter.

Alwaysremovethetestleadsbeforereplacingthebatteryorfuses.

Inspecttheconditionofthetestleadsandthemeteritselfforanydamagebeforeoperatingthemeter.

Usegreatcarewhenmakingmeasurementsifthevoltagesaregreaterthan30VACrmsor60VDC.These

voltagesareconsideredashockhazard.

AlwaysdischargecapacitorsandremovepowerfromthedeviceundertestbeforeperformingDiode,

ResistanceorContinuitytests.

Voltagechecksonelectricaloutletscanbedifficultandmisleadingbecauseoftheuncertaintyof

connectiontotherecessedelectricalcontacts.Othermeansshouldbeusedtoensurethattheterminals

arenot"live".

Iftheequipmentisusedinamannernotspecifiedbythemanufacturer,theprotectionprovidedbythe

equipmentmaybeimpaired.

Thisdeviceisnotatoyandmustnotreachchildren’shands.Itcontainshazardousobjectsaswellassmall

partsthatthechildrencouldswallow.

Incasethedeviceisgoingtobeunusedforanextendedperiodoftime,removethebatteriesandstore

themseparately.

Expiredordamagedbatteriescancausecauterizationoncontactwiththeskin.Useprotectivegloves

whenhandling.

Donotshort‐circuitthebatteries.Donotthrowbatteriesintoafire.



Thismeterhasbeendesignedforsafeuse,butmustbeoperatedwithcaution.Theruleslistedbelowmust

becarefullyfollowedforsafeoperation.



1. NEVERapplyvoltageorcurrenttothemeterthatexceedsthespecifiedmaximum:

InputProtectionLimits

FunctionMaximumInput

VDCorVAC600VDC/ACrms

µA/mAAC/DC500mA600Vfastactingfuse

AAC/DC10A600Vfastactingfuse

Frequency,Resistance,Capacitance,DutyCycle,

DiodeTest,Continuity

600VDC/ACrms

2. USEEXTREMECAUTIONwhenworkingwithhighvoltages.

3. DONOTmeasurevoltageifthevoltageonthe"COM"inputjackexceeds600Vaboveearthground.

4. NEVERconnectthemeterleadsacrossavoltagesourcewhilethefunctionswitchisinthecurrent,

resistance,ordiodemode.Doingsocandamagethemeter.

5. ALWAYSdischargefiltercapacitorsinpowersuppliesanddisconnectthepowerwhenmakingresistance

ordiodetests.

6. ALWAYSturnoffthepoweranddisconnectthetestleadsbeforeopeningthecoverstoreplacethefuse

orbatteries.

7. NEVERoperatethemeterunlessthebackcoverandthebatteryandfusecoversareinplaceandfastened

securely.

8. NEVERchangethemeasurementfunctionbyturningthefunctiondialwhiletesting.

9. Iftheequipmentisusedinamannernotspecifiedbythemanufacturer,theprotectionprovidedbythe

equipmentmaybeimpaired.

MN62‐en‐GB_V1.112/15

MeterDescription

1. Non‐ContactVoltageDetectorLEDlamp

2. LCDDisplay

3. MAX‐MIN

4. RANGEbutton

5. HOLD‐Backlightbutton

6. Functionswitch

7. ‘A’probeinputjack

8. ‘mAµA’probeinputjack

9. COM(‐)inputjack

10. Positive(+)inputjack

11. SELECT‐VariableFrequencyControlbutton

12. HZ‐%button

13. REL(Relative)button



Note:Tiltstand,testleadholders,andbattery/fusecompartmentareonrearofunit.



ButtonDescriptions

RANGEbutton

ThedefaultmodeisAutoRange.Tomanuallyrange,pressRANGEtostepthroughtheranges.

PressandholdRANGEtoreturntoAutoRangemode.AutoRangeisdisplayedinAutomode.

MAX‐MINbutton

PresstoactivatetheMAX/MINrecordingmode(MAXwillappear).Themeterwilldisplayand

holdthemaximumreading.Pressagain(MINwillappear).Themeterwilldisplayandholdthe

minimumreading.Toexit,pressandholdMAX‐MINfor2seconds.

REL(Relative)button

Thedisplayedvalue,atthetimeofthebuttonpress,becomestheReferencevaluewithwhich

subsequentreadingsarecompared.SeededicatedRelativemodesection.

HOLDandBacklightbutton

Shortpresstofreezedisplayedreading(Hiconisvisible).Pressagaintoreleasereading.

PressandholdtoswitchbacklightONorOFF.

Hz‐%button

Frequency(Hz)andDutyCycle(%)modes.AvailableonlyintheACVoltage/Currentand

Frequencymodes.

SELECT‐VFCbutton

ShortpressesselectACorDCforvoltageandcurrentmeasurements.

InACVoltageVFCmode,pressandholdtoaccessVFC(VariableFrequencyControl)wherea

lowpassfilterisemployedformeasuringthevoltageofavariablefrequency/speeddrive.

MN62‐en‐GB_V1.112/15

DisplayDescription

78910 11

21 13

VFC



1. Relativemode

2. Seeunitsprefixlistbelow

3. Ohms(Resistance)

4. Hertz(Frequency)

5. Seeunitsprefixlistbelow

6. Voltage

7. Seeunitsprefixlistbelow

8. Amperes(Amps)Current

9. Farads(Capacitance)

10. Percent(%)dutycycle(forAConly)

11. Batterystatusicon

12. APO(AutoPowerOFF)active

13. Measurementreadingdigits

14. Non‐contactvoltagedetector(displaysEFinreadingarea)

15. AutoRangeisshowninAutoRangemode

16. MAX‐MINmemoryactive

17. DataHoldactive

18. Continuitytest(Resistance)

19. Diodetest

20. Minus(negative)sign

21. AC(alternatingcurrent)orDC(directcurrent)mode

22. VFC(lowpassfilter)VariableFrequencyControl

Measurementunitprefixes

nnano(10‐9)(capacitance)

µmicro(10‐6)(amps,cap)

mmilli(10‐3)(volts,amps)

kkilo(103)(ohms)

Mmega(106)(ohms)

MN62‐en‐GB_V1.112/15

OperatingInstructions

WARNING:Riskofelectrocution.High‐voltagecircuits,bothACandDC,areverydangerousandshouldbe

measuredwithgreatcare.

1. ALWAYSturnthefunctionswitchtotheOFFpositionwhenthemeterisnotinuse.

2. IfOLappearsinthedisplayduringameasurement,thevalueexceedstheselectedrange.

Changetoahigherrange.

3. Ifthemeterdoesnotswitchonwhenthefunctiondialisturnedtoanypositionotherthan

OFF,pleasecheckthebatteries.RefertotheBatteryInstallationsectionofthisguide.

AUTOPOWEROFF(APO)

TheAPOfeatureturnsthemeteroffafter15minutesofinactivity.TodisableAPO,holdthe

SELECTbuttonwhileturningthemeteron.Themeterwillemit5beepsindicatingthatAPOhas

beendisabled(theAPOclockiconwillnotbevisibleonthedisplay).Turnthemeteroffandthen

onagaintore‐enableAPO(theAPOclockiconwillbevisibleonthedisplaywhenAPOisactive).

AUTOMATICandMANUALRange

ThemeterdefaultstoAUTORangemodewhenitisswitchedON.Inthismodethemeter

automaticallyselectsthebestrangeforthemeasurementsbeingmadeandisgenerallythebest

modeformostmeasurements.Formeasurementsituationsrequiringthatarangebemanually

selected,performthefollowing:

1. PresstheRANGEbutton.The“AUTORANGE”displayindicatorwillturnoff.

2. PresstheRANGEbuttontostepthroughtheavailableranges.

3. ToexittheManualRangingmodeandreturntoAutoranging,pressandholdtheRANGE

buttonfor2seconds.

MAX/MINMemory

1. PresstheMAX/MINbuttontoactivatetheMAX/MINrecordingmode.ThedisplayiconMAX

willappear.Themeterwilldisplayandholdthemaximumreadingandwillupdateonlywhen

anewmaximumreadingoccurs.

2. PresstheMAX/MINbuttonagainandthedisplayiconMINwillappear.Themeterwill

displayandholdtheminimumreadingandwillupdateonlywhenanewminimumreading

occurs.

3. ToexitMAX/MINmodepressandholdtheMAX/MINbuttonfor2seconds.

Relativemode

Therelativemeasurementfeatureallowstheusertomakemeasurementsrelativetoastored

referencevalue.Areferencevoltage,current,etc.canbestoredwheresubsequent

measurementscanbemadeincomparisontothatstoredreferencevalue.Thedisplayedvalueis

thedifferencebetweenthereferencevalueandthemeasuredvalue.

1. Performameasurementasdescribedintheoperatinginstructions.

2. PresstheRELbuttontostorethereading;theRelativeindicator willappearonthedisplay.

3. Thedisplaywillnowindicatethedifferencebetweenthestoredandmeasuredvalue.

4. PresstheRELbuttontoexittherelativemode.TheRelativeindicatorwillswitchOFF.

MN62‐en‐GB_V1.112/15

DisplayBacklight

Pressandholdthe buttontoturnthebacklightON/OFF.Thebacklightwillautomaticallyturn

offafter30seconds.

DataHold

TheDataHoldfunctionfreezesthereadinginthedisplay.PresstheHOLDbuttontoswitchData

HoldON/OFF.WhentheDataHoldmodeisactivethedisplaywillshowtheHicon.

DCVOLTAGEMEASUREMENTS

CAUTION:DonotmeasureDCvoltagesifamotoronthecircuitisbeingswitchedONorOFF.Largevoltage

surgesmayoccurthatcandamagethemeter.

1. SetthefunctionswitchtotheVposition.

2. PresstheSELECTbuttontoswitchtoDCifnecessary.

3. InserttheblacktestleadbananaplugintothenegativeCOMjack.

InserttheredtestleadbananaplugintothepositiveVjack.

4. Touchtheblacktestprobetiptothenegativesideofthecircuit.

Touchtheredtestprobetiptothepositivesideofthecircuit.

5. UsetheRANGEbuttontomanuallyrangethereading.Pressand

holdtheRANGEbuttontoreturntoAutoRangeMode.Readthe

voltageinthedisplay.



ACVOLTAGEMEASUREMENTS

WARNING:RiskofElectrocution.Theprobetipsmaynotbelongenoughtocontactthelivepartsinside

some240Voutletsforappliancesbecausethecontactsarerecesseddeepintheoutlets.Asaresult,the

readingmayshow0voltswhentheoutletactuallyhasvoltageonit.Makesuretheprobetipsaretouching

themetalcontactsinsidetheoutletbeforeassumingthatnovoltageispresent.



CAUTION:DonotmeasureACvoltagesifamotoronthecircuitisbeingswitchedONorOFF.Largevoltage

surgesmayoccurthatcandamagethemeter.

1. SetthefunctionswitchtotheVposition.

2. PresstheSELECTbuttontoswitchtoACifnecessary.

3. InserttheblacktestleadbananaplugintothenegativeCOMjack.

InsertredtestleadbananaplugintothepositiveVjack.

4. Touchtheblacktestprobetiptotheneutralsideofthecircuit.

Touchtheredtestprobetiptothe“hot”sideofthecircuit.

5. Readthevoltageinthedisplay.

6. UsetheRANGEbuttontomanuallyrangethereading.Pressand

holdtheRANGEbuttontoreturntoAutoRangeMode.

MN62‐en‐GB_V1.112/15

ACVOLTAGEMEASUREMENTSwithVFC,Hz,and%DutyCycle

WARNING:RiskofElectrocution.Theprobetipsmaynotbelongenoughtocontactthelivepartsinside

some240Voutletsforappliancesbecausethecontactsarerecesseddeepintheoutlets.Asaresult,the

readingmayshow0voltswhentheoutletactuallyhasvoltageonit.Makesuretheprobetipsaretouching

themetalcontactsinsidetheoutletbeforeassumingthatnovoltageispresent.



CAUTION:DonotmeasureACvoltagesifamotoronthecircuitisbeingswitchedONorOFF.Largevoltage

surgesmayoccurthatcandamagethemeter.

1. SetthefunctionswitchtotheVFCposition.

2. InserttheblacktestleadbananaplugintothenegativeCOMjack.

InsertredtestleadbananaplugintothepositiveVjack.

3. PressandholdtheVFCbuttonuntilthemeterbeepsandVFCis

brieflydisplayed.Themeterisnowapplyingalowpassfilter(Note:

VFCisVariableFrequencyControl).PressandholdtheVFCbutton

againtoexittheVFCmode(ENDwillbrieflydisplay).

4. Touchtheblacktestprobetiptotheneutralsideofthecircuit.

Touchtheredtestprobetiptothe“hot”sideofthecircuit.

5. Readthevoltageinthedisplay.

6. PresstheHz/%buttontoindicateHz.

7. Readthefrequencyinthedisplay.

8. PresstheHz/%buttonagaintoindicate%.

9. Readthe%dutycycleinthedisplay.

%DutyCycleNote:DutyCyclemeasurementsareAConlyforthismeter.Measurement

signalsmustbe‘zerocrossing’andmustreach‐0.7VforthemetertoproperlydisplayDuty

Cycle%.

MN62‐en‐GB_V1.112/15

DC/ACMILLIVOLTMEASUREMENTS

CAUTION:DonotmeasureDC/ACvoltagesifamotoronthecircuitisbeingswitchedONor

OFF.Largevoltagesurgesmayoccurthatcandamagethemeter.

1. SetthefunctionswitchtothemVposition.

2. InserttheblacktestleadbananaplugintothenegativeCOMjack.

InserttheredtestleadbananaplugintothepositiveVjack.

3. PresstheSELECTbuttontoselectDCorACmillivolts.

4. Touchtheblacktestprobetiptothenegativesideofthecircuit.

Touchtheredtestprobetiptothepositivesideofthecircuit.

(FigureatrightshowsDCmeasurementonly).

5. Readthevoltageinthedisplay.

6. ForAC,presstheHz/%buttontoindicateHz.

7. Readthefrequencyinthedisplay.

8. ForAC,presstheHz/%buttonagaintoindicate%.

9. Readthe%dutycycleinthedisplay.

DCCURRENTMEASUREMENTS

CAUTION:Donotmake5Acurrentmeasurementsforlongerthan30seconds.Allow15

minutesbetweentests.Exceeding30secondsmaycausedamagetothemeterand/orthetest

leads.

1. InsertblacktestleadbananaplugintothenegativeCOM

jack.

2. Forcurrentmeasurementsupto6000µADC,setthe

functionswitchtotheµApositionandinserttheredtest

leadbananaplugintotheµA/mAjack.

3. Forcurrentmeasurementsupto600mADC,setthefunction

switchtothemApositionandinserttheredtestlead

bananaplugintotheµA/mAjack.

4. Forcurrentmeasurementsupto10ADC,setthefunction

switchtotheApositionandinserttheredtestleadbanana

plugintothe10Ajack.

5. PresstheSELECTbuttontoindicateDConthedisplay.

6. Removepowerfromthecircuitundertest,thenopenupthe

circuitatthepointwhereyouwishtomeasurecurrent.

7. Touchtheblacktestprobetiptothenegativesideofthecircuit.Touchtheredtestprobe

tiptothepositivesideofthecircuit.

8. Applypowertothecircuit.

9. Readthecurrentinthedisplay.

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