Extech Instruments EX650 Manuale utente

USERGUIDE

600ATrueRMSDigitalClampMeters

EX650Series

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EX650TrueRMS600AACDigitalClampMeter

EX655TrueRMS600AAC/DCClampMeterwithTemperature,

Inrush,andLowPassFilter

 

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EX65x‐en‐GB_V1.67/16

TableofContents

1.INTRODUCTION3

2.SAFETYINFORMATION4

3.DESCRIPTIONS6

4.OPERATION11

PoweringtheMeter11

DisableAutoPowerOFF11

DisplayBacklight11

WorkLight11

DataHold12

TestLeadConsiderations12

VoltageMeasurements12

‘LoZ’ACVoltageMeasurements15

CurrentMeasurementsUsingtheClamp16

µAAC/DCCurrentMeasurementsusingTestLeads18

Non‐ContactVoltageDetector19

ResistanceMeasurements20

ContinuityMeasurements22

CapacitanceMeasurements23

FrequencyMeasurements(EX655)25

DiodeTest26

TemperatureMeasurements(EX655only)27

ExtendedFunctionalityModes28

InrushCurrentMode(EX655only)28

DCAZERO(EX655only)29

MAX‐MINMode29

LowPassFilter(LPF)EX655only30

Relative Mode30

5.MAINTENANCE31

6.SPECIFICATIONS32

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1. Introduction

ThankyouforselectingtheExtechEX650SeriesClampMeter.

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TheEX650isafeature‐packedTrueRMSdigitalClampmeterserieswith6000countbacklit

displayandautomaticranging.



MeasureAC/DCvoltage,ACcurrent,DCcurrent(EX655),Inrushcurrent(EX655),Resistance,

Diode,Continuity,Capacitance,Temperature(EX655),Lo‘Z’lowimpedancemode,and

Frequency(EX655).

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OtherfunctionsincludeDataHold,Maximum/MinimumMemory,Relativemode,LowPassFilter

(LPF)forVariableFrequencyDrivesignals(EX655),Worklight,NCV(Non‐ContactVolt

Detection),andAutopower‐off.

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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.



Features

6000countdigitaldisplay

60segmentanalogbargraphdisplayonEX655model

LargebacklitLEDdisplay

TrueRMSACmeasurements

LoZmodeeliminatesghostvoltagereadingsonnon‐energizedcircuits

AutoandManualRangemodes

0.5%DCVaccuracy

DataHold

InrushcurrentmodeonEX655model

Relativemode

AutoPowerOFF(APO)withdisablefunction

Temperaturemeasurements(ModelEX655only)withincludedtemperatureprobe

600AACcurrentmeasurements

600ADCCurrentMeasurementsonEX655model

Non‐ContactVoltageDetector

Visualandaudiblecontinuitymeasurementalert

Lowbatteryindicator

Includestestleads,Type‐Ktemperatureprobe(EX655),andthree(3)1.5VAAAbatteries.

CATIII600V/CATII1000V

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EX65x‐en‐GB_V1.67/16

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.

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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

Low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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

EX65x‐en‐GB_V1.67/16

910

3. Descriptions

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MeterDescription(EX655pictured)

1. Non‐ContactVoltageDetector

2. Clampjaw

3. WorkLightON/OFFbutton

4. NCValertLEDlamp

5. Rotaryfunctionswitch

6. Max‐Minbutton

7. Relative,DCAZero,andInrushbutton(DCAZero&InrushonEX655only)

8. LCDmulti‐functiondisplaywithbacklighting

9. Positiveinputterminal

10. Common(‐)inputterminal

11. Mode(M)andLPF(lowpassfilter)button(LPFonEX655only)

12. BacklightandHoldbutton

13. JawTrigger

14. WorkLight

Note:Batterycompartmentonbackofmeter

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Fig3‐1METERDESCRIPTION

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DisplayIconDescriptionsforEX650

1234 5 6

12 13 14 15 16

Fig3‐2EX650METERDISPLAY

1. Highvoltage

2. Batterystatus

3. Relativemode

4. Autopoweroff

5. Datahold

6. Unitsofmeasure

7. DirectCurrent

8. AlternatingCurrent

9. Diode

10. Continuity

11. Automaticrange

12. LowImpedancemode(LoZ)

13. MaximumandMinimummemory

14. Non‐ContactVoltageDetector

15. LowPassFilter(LPF)

16. Temperatureunits

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DisplayIconDescriptionsforEX655



1234 5 6

12 13 14 15 16 17



Fig3‐3EX655METERDISPLAY

1. Highvoltage

2. Batterystatus

3. Relativemode

4. Autopoweroff

5. Datahold

6. Unitsofmeasure

7. DirectCurrent

8. AlternatingCurrent

9. Diode

10. Continuity

11. Automaticrange

12. LowImpedancemode(LoZ)

13. InrushCurrent(Surge)

14. MaximumandMinimummemory

15. Non‐ContactVoltageDetector

16. LowPassFilter(LPF)

17. Temperatureunits

18. Bargraph

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Push‐ButtonDescriptions

MomentarypressesoftheM(MODE)buttonperformthefunctionsshowninthe

tablebelow.Pressandholdthebuttontoactivate/deactivatetheLowPassFilter

(EX655only).

Fig.3‐4(a)EX655MODEButtonFunctionTable

SwitchPositionMODE(M)ButtonFunction



ACHzDC

or 

AC DC

Ω   

TEMPoC oF

Fig.3‐4(b)EX650MODEButtonFunctionTable

SwitchPositionMODE(M)ButtonFunction



AC DC

AC DC

Ω   

Momentarilypresstoaccess/exittheRelativemode.Thismodeofoperationis

onlyavailableforDCvoltage,ACCurrent,Resistance,andCapacitance.

InDCMode,presstozerothedisplay(EX655only)

WhentheEX655isintheACAmode,pressandholdtoaccesstheInrushmode.



PresstoaccesstheMIN/MAXmode.TheMAXiconwillappearalongwiththe

storedhighestreading.Pressagaintoviewtheminimumreadingstored(MINicon

displayed).Continuetousethebuttoninthismannerasdesired.Pressandhold

thebuttontoexittheMIN/MAXmode.ThismodeofoperationisonlyavailableforAC/DC

Voltage/Current,Resistance,andTemperature.

Pressandholdthisbuttontoactivate/deactivatetheDataHoldfunction.Momentary

pressesswitchthedisplaybacklightONorOFF.

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Fig3‐5(a)‐FunctionSwitchDescription(EX655)

1. LowImpedancemodeforACVoltage

measurements

2. MeterPOWEROFFposition

3. AC/DCVoltageandHzforACV(useMODE

buttontochooseAC,Hz,orDC)

4. Frequencymode

5. Capacitance,Continuity,Diode,

Resistancemodes(useMODEbuttonto

choosemode)

6. Temperaturemode

7. 600µAAC/DCCurrentmode(useMODE

buttontochooseACorDC)

8. AC/DC600ACurrentmode(useMODE

buttontochooseACorDC)

9. Non‐ContactVoltageDetectpositionwith

alertLED



Fig3‐5(b)‐FunctionSwitchDescription(EX650)

1. LowImpedancemodeforACVoltage

measurements

2. MeterPOWEROFFposition

3. AC/DCVoltage(useMODEbuttonto

chooseACorDC)

4. Capacitance,Continuity,Diode,Resistance

modes(useMODEbuttontochoose

mode)

5. 600µAAC/DCCurrentmode(useMODE

buttontochooseACorDC)

6. 6AACCurrentmode

7. 60AACCurrentmode

8. 600AACCurrentmode

9. Non‐ContactVoltageDetectpositionwith

alertLED

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