Extech Instruments EX360 User manual

USERMANUAL
TrueRMSDigitalMultimeters
EX360Series

EX360TrueRMSDigitalMultimeter
EX363TrueRMSDMMwithTemperatureandµAAC/DC
EX365TrueRMSDMMwith10AAC/DCCurrent



AdditionalUserManualTranslationsavailableatwww.extech.com

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TableofContents
1.INTRODUCTION3
2.SAFETYINFORMATION4
3.DESCRIPTIONS6
4.OPERATION9
PoweringtheMeter9
DisableAutoPowerOFF9
DisplayBacklight9
SmartDataHold9
TestLeadConsiderations9
VoltageMeasurements10
LoZVoltageMeasurements12
PEAKMAX‐MINHOLDMode(AConly)12
10AAC/DCCurrentMeasurements(EX365only)13
µAAC/DCCurrentMeasurements(EX363only)14
Non‐ContactVoltageDetector15
ResistanceMeasurements16
ContinuityMeasurements16
CapacitanceMeasurements17
RelativeMode17
DiodeTest18
TemperatureMeasurements(EX363only)19
5.MAINTENANCE20
6.SPECIFICATIONS22

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1. Introduction
ThankyouforselectingtheExtechEX360SeriesMeter.

TheEX360Seriesarefeature‐packedTrueRMSdigitalmultimeters.InadditiontostandardDMM
features,theyofferaLowImpedance(LoZ)mode,SmartDataHold,AutomaticAC/DCvoltage
Detectmode,BacklitLCD,andaNon‐ContactVoltageDetectorthatsenseselectricalsources
safely.

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
6000countdigitaldisplayand60segmentanalogbargraphdisplay
LargebacklitLEDdisplay
TrueRMSACVmeasurements
LoZmode(withAutoAC/DCVoltagedetect)protectsreadingsfromghostvoltages
AutoandManualRangemodes
0.5%DCVaccuracy
SmartDataHold
PeakHold
Relativemode
AutoPowerOFF(APO)withdisablefunction
Temperaturemeasurements(ModelEX363only)withincludedtemperatureprobe
AC/DCµAfunction(ModelEX363only)
10AAC/DCcurrentmeasurementswith11A/1000Vhighenergyfuse(EX365only)
Non‐ContactVoltageDetector
Visualandaudiblecontinuitymeasurementalert
Segmentedlowbatteryindicator
Includesholsterwithprobeholder,tiltstand,typeKtemperatureprobe(EX363),magnetic
hanger,and9Vbattery.
CATIV600V/CATIII1000V
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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.
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.
ReplaceblownfuseswithfusesofthesametypeandratingasspecifiedinthisUserGuide.
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.

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SafetySymbolsthataretypicallymarkedonmetersandinstructions
Thissymbol,adjacenttoanothersymbol,indicatestheusermustrefertothe
manualoruserguideforfurtherinformation.
Riskofelectricalshock
Fusesymbol
Equipmentprotectedbydoubleorreinforcedinsulation
Batterysymbol
ConformstoEUdirectives
Donotdiscardthisproductinhouseholdtrash.
ACmeasurement
DCmeasurement
Earthground

UnsafeVoltageAlert
Whenthemeterdetectsavoltageequaltoorgreaterthan30Voravoltageoverload(OL)inV,mV,orLoZ
mode,thesymbolisdisplayed.Thissystemwasdesignedtoalerttheuserofapotentiallyhazardous
voltage.
PERIEC1010OVERVOLTAGEINSTALLATIONCATEGORY
OVERVOLTAGECATEGORYI
EquipmentofOVERVOLTAGECATEGORYIisequipmentforconnectiontocircuitsinwhichmeasuresare
takentolimitthetransientover‐voltages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

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3. Descriptions

MeterDescription(EX365pictured)
1. Non‐ContactVoltageDetectorandContinuityalertlight
2. LCDmulti‐functiondisplay
3. M(MODE)button(alsooC/oFbuttononEX363)
4. RRANGEandLo/Hibutton
5. Rotaryfunctionselectswitch
6. Positiveinputterminal(10ACurrent)forEX365only
7. Common(‐)inputterminal
8. Positiveinputterminal:Voltage,Resistance,Capacitance,Temperature(EX363),andµA
(EX363)
9. LCDBacklightbutton
10. HDataHoldbutton
11. PEAKMAX‐MIN/REL(RELATIVE)button
12. Batterycompartmentonbackofmeter

Fig3‐1METERDESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
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DisplayIconDescriptions
AutoVolts:AutomaticAC/DCvoltagedetect(forLoZmodeonly) 
Auto: Automatic range mode
HOLD:Displayhold
LoZ:LowImpedancemode
:Relativemode
andAC:AlternatingCurrentMeasurements
andDC:DirectCurrentMeasurements
:Maindisplaydigits
:Bargraph
A:Amperes(Current)
V:Volts(Voltage)
oC/oF:Temperatureunits
F:Farads(Capacitancemeasurementunits)
Hz:Hertz(Frequencymeasurementsunit)
Ω(Ohms):Resistancemeasurementunit
:Batterystatusicon
‐Minus(negative)sign
:Non‐ContactVoltDetectandhighvoltageicon
PEAKMAX‐MINPeakMaximumandMinimumreadingmemory
:Diodemeasurementmode
:Continuitymodesymbol
Prefixes:µ(micro:10‐6),m(milli:10‐3),n(nano:10‐9),k(kilo:103),M(mega:106)

Fig3‐2METERDISPLAY
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Push‐ButtonDescriptions

Press the M(MODE) button to perform the following. The oC/oFfunction is only
available on the EX363 model:
SwitchPositionMODE(M)ButtonFunction
V Hz
(EX365)A Hz
ΩΩ  

µA(EX363)ACDC
TEMP(EX363)oC oF
Press R(Range) to switch from Auto to Manual Range. Hold to return to Auto Range.
Press to select Non-Contact Voltage Detector Sensitivity Lo (low) or Hi (high).
Short press activates Relative mode; long press access/exit PEAK MAX-MIN mode.
Press to turn Smart Data Hold ON or OFF.
Press to turn the LCD backlight ON or OFF

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4. Operation
CAUTION:ReadandunderstandalloftheSafetystatementslistedinthesafetysection
ofthismanualpriortouse.
PoweringtheMeter
1. Turntherotaryfunctionswitchtoanypositiontopowerthemeter.Checkthebatteriesifthe
unitfailstopowerON.RefertotheMaintenancesectionforbatteryandfusereplacements.
2. TurnthefunctionswitchtotheOFFpositiontopowerOFFthemeter.
3. ThemeterhasanAutoPowerOFFfeature(APO)wherethemeterswitchesOFFafter20
minutesofinactivity.WhenAPOisenabled,theAPOiconwillshowonthedisplaywhenthe
meterispoweredON.TodisableAPO,refertothenextsection.
Note:Themeterdisplaysthebatterycapacitywhenpoweringup.Thedisplaywilleithershowthe
wordFULL(batteryfullycharged)orapercentagerepresentingremainingbatterypower.The
internationalsegmentedbatterystrengthsymbolisalsoshownonthedisplayatalltimeswhen
themeterisONandwhenthereissufficientbatterypowertopowerthemeter.
DisableAutoPowerOFF
ThemeterwillautopowerOFFafter20minutesofinactivity.Todefeatthisfeature,followthe
stepsbelow.
1. WiththemeterOFF,pressandholdtheM(MODE)buttonand,whilecontinuingtohold,turn
therotaryfunctionswitchtoanypositiontopowerONthemeter.
2. ThedisplaywillshowAOFF.
3. Releasethebutton.
4. APOwillnowbedisableduntilthenextcycleofpower.
DisplayBacklight
WiththemeterpoweredON,pressthebacklightbuttontoswitchthebacklightONorOFF.Note
thatexcessiveuseofthebacklightwillshortenthebatterylife.
SmartDataHold
TofreezetheLCDmeterreading,presstheH(HOLD)button.Whiledataholdisactive,theHOLD
displayiconappearsontheLCD.PresstheHbuttontoreturntonormaloperation.TheHOLDicon
willswitchOFF.
Themeter’sbeeperwillsoundandtheLCDwillflashifthedetectedsignalis50countsgreaterthan
theheldreading.
TestLeadConsiderations
TestleadprobecoverscanberemovedforCATII1000Vinstallations.Usethetestleadprobe
coversforCATIII1000VorCATIV600Vinstallations.Donotmeasurevoltages>1000VACorDC.
Removethestoragecapsfromthemeterendoftestleadsbeforeconnectingleadstothemeter.

EX36x‐en‐GB_V1.61/17
10
VoltageMeasurements
WARNING:RemovethetestleadprobecoversforCATII1000Vinstallations.Usethetest
leadprobecoversforCATIII1000VorCATIV600Vinstallations.Donotmeasurevoltages
greaterthan1000V.
CAUTION:Whenconnectingthetestleadstothecircuitordeviceundertest,connectthe
blackleadbeforethered;whenremovingthetestleads,removetheredbeforetheblacklead.
ACVoltageMeasurements
1. Inserttheblacktestleadbananaplugintothenegative(COM)jackandtheredtestlead
bananaplugintothepositive(V/Ω)jack.
2. Turnthefunctionswitchtotheposition.
3. ThemeterdefaultstotheAutoRangemode(AutodisplayedonLCD).PresstheRbuttonto
accessthemanualrangemode.PressandholdtheRbuttontoreturntotheAutoRange
mode(Autowillbedisplayed).
4. ReadtheWarningandCautionstatementsabovetodeterminewhetherornottousethe
testleadprobecovers.
5. Touchthetestprobetipstothecircuitundertest.
6. Readthedigitalvalueandthebargraphrepresentationofthemeasurementinthedisplay.
Thedisplaywillalsoindicatetheproperdecimalpointandmeasurementtype/unitssymbols.
7. Notethevoltagealertsymbol whenvoltageispresent.
8. UsetheMbuttontoviewthefrequency(Hz)ofthemeasuredvoltage.

Fig4‐1ACVOLTAGEMEASUREMENTS