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Thankyou forpurchasingour digitalequipotentialtester.Inordertousethisproduct
better, pleasebesure to:
Readthis usermanual indetail.
Strictlyfollowthe safetyrulesand precautionslisted inthis manual
uInanycase, theuseofthisinstrument shouldpayspecialattention to safety.
uToensuremeasurement accuracy, usethefour-wire methodfortesting. Each
testintervalis 30seconds.。
uThetester is designedwithovervoltageprotection, butdirectmeasurement
ofconductorswithmains shouldbeavoided。
uBatteryvoltagelowsymbol display,pleasechargein time, 8to 10 hoursper
charge。
uThetester is not usedforalongtime. Pleasechargethebatteryevery1~2
months.
uWhenmeasuringvoltage,C1terminalandC2terminalcannotinputsignal,P1terminal
andP2terminalshould notover-rangeinput voltagesignal,otherwiseitmaydamagethe
instrument。
uWhenthetesterisin useandthetestlinebreaks andthemetalis exposed,
stopusing it.
uDonotplaceandstore thetester foralongtimeunder hightemperature and
humidity, in aplace withcondensationanddirectsunlight.
uPrecision instruments, havetheregular maintenance,keepthebodyand test
leads clean, donotdrop。
uUse, disassembly, and maintenanceofthistester must beperformedby
authorizedpersonnel。
uBecauseofthereasonofthistester, ifitisdangerous tocontinueusing
it,itshould bestoppedimmediatelyand sealedimmediately,and handledbyanauthorized
institution.
uThe “”hazardsymbol on thetester andmanual, theusermustbesafely
operatedaccordingtotheindication.
II Introduction
Digitalequalpotential tester is alsoknownasmicro-ohmmeter,ohmmeter,DCgrounding
resistance tester, usingthemost microprocessortechnology,four-wiretest,safe andreliable.Itis
aspecialinstrument fordetectingequipotentialbondingqualitybetweenmetalcomponentsof
objectssuchashousings,lightningprotectionbelts,groundbeams,structures,cabinets,steel
bars,pipes,windows,guardrails,radiators,andassemblylines.Itcanalsomeasure the
resistance oftheconnectionconductorsbetweenvariouselectricalequipments and earth ground,
theDCresistance oftransformers,and alsocanmeasure thecontactresistance ofswitchesand
socketcontacts,coils,metalwires,weldingpoints and other low-valueresistances.Widelyused
in telecommunications,electricpower,meteorology,computer room,oil field,power
distributionlines,irontower transmission lines,gasstations,factorygroundinggrids,lightning
rods, etc. ItalsohasthefunctionofmeasuringDCvoltageandACvoltage.
