Extech Instruments EX650

EX65x‐en‐GB_V1.67/16
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2. SafetyInformation
Toensurethesafeoperationandserviceofthemeter,followtheseinstructionsclosely.Failureto
observewarningscanresultinsevereinjury.

WARNINGS
WARNINGSidentifyhazardousconditionsandactionsthatcouldcauseBODILYHARMorDEATH.
 Whenhandlingtestleadsorprobes,keephandsandfingersbehindthefingerguardsatalltimes.To
avoidelectricalshockdonottouchexposedelectricalwire,connectors,unusedinputterminals,or
circuitsundertest.
 Removetestleadsfromthemeterbeforeopeningthebatterycompartmentormeterhousing.

 UsethemeteronlyasspecifiedinthisUserGuideoraccompanyingQuickStarttoavoidcompromising
theprotectionsprovidedbythemeter.
 Besuretousetheproperterminals,switchpositions,andrangeswhentakingmeasurements.
 Verifythemeter’soperationbymeasuringaknownvoltage.Have
themeterservicedifthemeter
respondsunusuallyoriftherearequestionsregardingthemeter’sfunctionalintegrity.
 Donotapplymorethantheratedvoltage,asmarkedonthemeter,betweenterminalsorbetweenany
terminalandearthground.
 Donotmeasurevoltagesabove1000VDCor750VAC
betweenterminalandgroundtopreventelectrical
shockanddamagetotheClampmeter.
 Usecautionworkingwithvoltagesabove30VACRMS,42VACpeak,or60VDC.Thesevoltagesposea
shockhazard.
 Toavoidmisleadingreadingsthatcouldleadtoelectricshockandinjury,replace
thebatteriesassoonas
thelowbatteryindicatorisdisplayed.
 Disconnectpowertothecircuitundertestanddischargeallhigh‐voltagecapacitorsbeforetesting
resistance,continuity,diodes,orcapacitance.
 Donotusethemeterinthepresenceofexplosivegasorvapor.
 Toreduceriskof
fireorelectricshock,donotusethemeterifitiswetanddonotexposethemeterto
moisture.
 IndividualprotectiveequipmentshouldbeusedifHAZARDOUSLIVEpartsintheinstallationwhere
measurementsaretobecarriedoutcouldbeaccessible.

CAUTIONS
CAUTIONSidentifyconditionsandactionsthatcouldcauseDAMAGEtothemeterorequipment
undertest.Donotexposethemetertoextremesintemperatureorhighhumidity.
 Disconnectthetestleadsfromthetestpointsbeforechangingthepositionofthefunction(rotary)
switch.
 Donotexposethemetertoextremesintemperatureortohighhumidity.
 Neversetthemetertotheresistance,diode,capacitance,micro‐amp,orampfunctionswhen
measuringthevoltageofapowersupplycircuit;thiscouldresultinmeterdamageanddamagetothe
equipmentundertest.