Extech Instruments MA140

MA140‐en‐GB_V1.01/15
2
Introduction
ThankyouforselectingtheExtechMA140300AACTrueRMSMiniClampMeterwithNon ‐Contact
VoltageDetector.TheMA140issmallinsizebutruggedinperformance.
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TheMA140measuresACcurrentto300AandoffersaSmartDataHoldfeature,displayBacklight,
In‐rushCurrentmode,LowPass
Filtering(LPF),anda non‐contactVolt‐Detectionfeaturethat
senseselectricalsourcessafely.
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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.
SafetyInformation–PleaseReadFirst 
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.
 IndividualprotectiveequipmentshouldbeusedifHAZARDOUSLIVEpartsintheinstallationwhere
measurementsaretobecarriedoutcouldbeaccessible.
 Iftheequipmentisusedinamannernotspecifiedbythemanufacturer,theprotectionprovidedbythe
equipmentmaybeimpaired.
 Toreducetheriskoffireorelectricshock,donotexposethisproducttorainormoisture.
 Verifythemeteroperationbymeasuringaknownvoltage.Ifindoubt,havethemeterserviced.
 Donotapplymorethantheratedvoltageasmarkedonthemeter.
 Toavoidfalse
readingsthatcanleadtoelectricshockandinjury,replacebatteryassoonasthelow
batteryindicatorappears.
 Donotusethemeterinoraroundexplosivegasorvapor.
 Pleasekeepfingersandhandsbehindthefingerguards.
 Donotexposemetertoextremesintemperature
orhighhumidity.
 De‐energizetheinstallationundertestorwearsuitableprotectiveclothingwhenplacingorremoving
thecurrentclampfromatestsetup.
 Donotapply/removethecurrentclampto/fromUNINSULATEDHAZARDOUSLIVEconductorswhich may
causeelectricshock,electricburn,orarcflash.
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