Extech Instruments MA140 Manuel utilisateur

USERGUIDE

TrueRMS300AACMiniClampMeterwithNon‐

ContactVoltageDetector

ModelMA140

www. .com information@itm.com1.800.561.8187

MA140‐en‐GB_V1.01/15

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.



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.



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.



www. .com information@itm.com1.800.561.8187

MA140‐en‐GB_V1.01/15

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.

SafetySymbolsthataretypicallymarkedonmetersandinstructions

Thissymbol,adjacenttoanothersymbol,indicatestheusermustrefertothe

manualforfurtherinformation.

Riskofelectricalshock

DonotapplyorremoveclampfromHAZARDOUSLIVEconductors

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



PERIEC1010OVERVOLTAGEINSTALLATIONCATEGORY

OVERVOLTAGECATEGORYI

EquipmentofOVERVOLTAGE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

www. .com information@itm.com1.800.561.8187

MA140‐en‐GB_V1.01/15

123 45

Description



MeterDescription

1. Transformercurrentjaw

2. Finger‐HandGuard

3. Jawopeningtrigger

4. LCDMulti‐functiondisplay

5. Push‐buttoncontrols



Notethatthebatterycompartmentislocatedonbackofmeter



DisplayDescription

1. Non‐ContactVoltDetecticon

2. MainDisplaydigits

3. In‐RushCurrentmode

4. LowPassFilter

5. DataHold

6. ACMeasurement

7. Amperes(current)

8. Batterystatusicon

9. Minus(negative)sign



ControlButtonDescription

Pressfor>2secondstoaccessIn‐rushCurrentmode

PresstoaccessLowPassFiltermode

Presstoaccesscurrentmeasurementmode

PresstoaccessVoltagedetectmode

PresstoswitchDataHoldonoroff

PresstopowerONthemeter.Pressandhold>2secondstoswitchOFF

Presstotoggledisplaybacklightonandoff

www. .com information@itm.com1.800.561.8187

MA140‐en‐GB_V1.01/15

Operation

CAUTIONS



ReadandunderstandalloftheSafetystatementslistedinthesafetysectionofthismanual

priortouse.

PoweringtheMeter

1. PressthePower‐Backlightbuttontopowerthemeter.Checkthebatteriesiftheunitfailsto

powerON.

2. PressandholdthePowerbuttonformorethan2seconds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.TodisableAPO,refertothenextsection.

Note:Themeterdisplaysthebatterycapacitywhenpoweringup.

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‘V’buttonand,whilecontinuingtoholdthe‘V’

button,pressthepowerbutton.

2. ThedisplaywillshowAOFF.

3. Releaseallofthebuttons.

4. TheAutoPowerOFFfunction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.

www. .com information@itm.com1.800.561.8187

MA140‐en‐GB_V1.01/15

ACCurrentMeasurements

WARNING:Donothandlethemeterabovethefinger/handguardbarrier.

CAUTION:ObserveCATIII600VwithrespecttoEarthGroundfortheJaw.

1. Pressthe‘A’buttontoaccesstheACCurrentmeasurementmode.TheAsymbolwillappear

onthedisplayinthelowerrighthandsideindicatingAmperes(Amps).

2. Pressthejawtriggertoopentheclampjaw.

3. Positiontheclamparoundonlyoneconductor.Seeaccompanyingdiagramsforcorrectand

incorrectuse.

4. Readthecurrentinthedisplay.Thedisplaywillindicatetheproperdecimalpointandvalue.



www. .com information@itm.com1.800.561.8187

MA140‐en‐GB_V1.01/15

InrushCurrentMode

IntheInrushmodethemeterwaitsuntilatleast5Aisdetectedandthenstartsa100mssample

windowinwhichtocaptureaninrushcurrentRMSvalue.Refertoillustrationbelow.

1. PressandholdtheINRUSHbuttonfor>2secondstoaccesstheInrushCurrentmode.

2. ThedisplaywillshowtheINRUSHicon.

3. Whenready,takeacurrentmeasurement.Themeterwillcapturethehighestreading

detectedduringa100mswindow.Notethatthe100mswindowdoesnotopenuntilatleast

5Aisdetected.

4. ToexittheInrushCurrentmodepresstheINRUSHbuttonagainmomentarily.TheINRUSH

iconwillswitchOFF.



100ms Sample Window

Measured Inrush

Sample time

trigger

Inrush

Button

Press

Current

Start Stop

hreshold



LowPassFilter

TheLowPassFiltermodeoffershighfrequencyrejectionwhenmeasuringVariableSpeedDrives.

TheLowPassFiltermodeoffersacut‐offfrequencyof160Hz(approx.)withanattenuation

characteristicof‐24dbperoctave(approx.).

1. MomentarilypresstheLPFbuttontoaccesstheLPFmode

2. TheLPFdisplayiconisshownonthedisplayintheLPFmode

3. PresstheLPFbuttonagaintoexittheLPFmode,theLPFiconwillswitchOFF



www. .com information@itm.com1.800.561.8187

MA140‐en‐GB_V1.01/15

Volt‐DetectionFeature

Themeter’saudiblebeepertriggersandthedisplayshows

dasheswhenthemetersensesanelectricalvoltagefield.The

highertheelectricalfieldstrengththegreaterthenumberof

dashesdisplayedandthefastertherateoftheaudiblebeeps.

Ifthemeterdoesnotemitatoneordisplaydashesinthis

mode,thereisstillthepossibilitythatvoltageispresent.Please

usecaution.

1. Pressthe‘V’buttontoaccesstheNon‐ContactVoltage

Detectmode.

2. Notethevoltagedetectiondisplayiconsasshowninthe

Descriptionsectionofthisguide.

3. Placethemeternearasourceofelectricalenergy.Thetip

oftheclampoffersthehighestsensitivity.

4. Notetheaudiblebeepingandthedashdisplays.

SmartDataHold

TofreezetheLCDmeterreading,presstheHOLDbutton.Whiledataholdisactive,theHOLD

displayiconappearsontheLCD.PresstheHOLDbuttontoreturntonormaloperation.The

HOLDiconwillswitchOFF.

Themeter’sbeeperwillsoundandthedisplaywillflashcontinuouslyifthedetectedsignalis50

countsgreaterthantheheldreading.



www. .com information@itm.com1.800.561.8187

MA140‐en‐GB_V1.01/15

Maintenance

WARNING:Toavoidelectricalshock,disconnectthemeterfromanycircuitandturnOFF

themeterbeforeopeningthecase.Donotoperatewithanopencase.

CleaningandStorage

Periodicallywipethecasewithadampclothandmilddetergent;donotuseabrasivesorsolvents.

Ifthemeterisnottobeusedfor60daysormore,removethebatteriesandstorethemseparately.

BatteryReplacement

1. RemovethePhillipsheadscrewatthelowerbackofthemeter.

2. Openthebatterycompartment.

3. ReplacethetwoLR44batteriesobservingcorrectpolarity.

4. Re‐assemblethemeterbeforeuse.

5. Safety:Pleasedisposeofbatteriesresponsibly;neverdisposeofbatteriesinafire,batteries

mayexplodeorleak;nevermixbatterytypes,installnewbatteriesofthesametype.



Neverdisposeofusedbatteriesorrechargeablebatteriesinhouseholdwaste.

Asconsumers,usersarelegallyrequiredtotakeusedbatteriestoappropriate

collectionsites,theretailstorewherethebatterieswerepurchased,or

whereverbatteriesaresold.

Disposal:Donotdisposeofthisinstrumentinhouseholdwaste.Theuseris

obligatedtotakeend‐of‐lifedevicestoadesignatedcollectionpointforthe

disposalofelectricalandelectronicequipment.



www. .com information@itm.com1.800.561.8187

MA140‐en‐GB_V1.01/15

Specifications

ELECTRICALSPECIFICATIONS

FunctionRangeResolutionAccuracy(ofreading)50/60Hz

ACCurrent

60.00A0.01

±(2.0%+5digits)

300.0A0.1

Allspecificationsarevalidfrom10%to100%ofeachrange

TheLCDdisplays0countswhenthereading<10counts

LowPassFilter

(LPF)

60.00A0.01

±(3.5%+5digits)

300.0A0.1

Allspecificationsarevalidfrom10%to100%ofeachrange

TheLCDdisplays0countswhenthereading<10counts

Cut‐offfrequency(‐3dB):160Hz

Attenuationcharacteristic:‐24dbperoctave(approximately)

FunctionRangeResolutionAccuracy(ofreading)

InrushCurrent

300.0A0.1 ±(3.5%+5digits)

Integrationtime:100ms

Triggercurrent(threshold):5A

Volt‐Detection80V~600VACn/an/a

Thetipoftheclampofferstheoptimumsensitivity

Notes:

Clamppositionerror:±2%ofreading.Maximum±4%nearclampjawopening.

AdjacentConductionInfluenceofJaw:<0.08A/A

Accuracyisgivenas±(%ofreading+leastsignificantdigit)at23C±3Cwithrelative

humiditylowerthan80%.Accuracyisspecifiedforaperiodofoneyearaftercalibration.

ACAspecificationsareforACCoupled,TrueRMS.Fornon‐sinusoidalwaveforms,additional

accuracyCrestFactor(C.F.)considerationsexistasdetailedbelow:

Add3.0%forC.F.1.0~2.0

Add5.0%forC.F.2.0~2.5

Add7.0%forC.F.2.5~3.0

www. .com information@itm.com1.800.561.8187

Table des matières

Autres manuels Extech Instruments Instrument de mesure

Extech Instruments

Extech Instruments CO10 Manuel utilisateur

Extech Instruments

Extech Instruments HD450 Manuel utilisateur

Extech Instruments

Extech Instruments RH25 Manuel utilisateur

Extech Instruments

Extech Instruments AN100-NIST Manuel utilisateur

Extech Instruments

Extech Instruments MultiScope 381270 Manuel utilisateur

Extech Instruments

Extech Instruments 407119-NIST Manuel utilisateur

Extech Instruments

Extech Instruments CO230 Manuel utilisateur

Extech Instruments

Extech Instruments 401025 Manuel utilisateur

Extech Instruments

Extech Instruments 407495 Manuel utilisateur

Extech Instruments

Extech Instruments TKG250 Manuel utilisateur

Extech Instruments

Extech Instruments PQ34-12 Manuel utilisateur

Extech Instruments

Extech Instruments EMF510 Manuel utilisateur

Extech Instruments

Extech Instruments FM200 Manuel utilisateur

Extech Instruments

Extech Instruments 380560 Manuel utilisateur

Extech Instruments

Extech Instruments SL250W Manuel utilisateur

Extech Instruments

Extech Instruments 380652 Manuel utilisateur

Extech Instruments

Extech Instruments RH600 Manuel utilisateur

Extech Instruments

Extech Instruments CO10 Manuel utilisateur

Extech Instruments

Extech Instruments LT510 Manuel utilisateur

Extech Instruments

Extech Instruments CO15 Manuel utilisateur

Extech Instruments

Extech Instruments HD750-NIST Manuel utilisateur

Extech Instruments

Extech Instruments TH10 Manuel utilisateur

Extech Instruments

Extech Instruments MO230 Manuel utilisateur

Extech Instruments

Extech Instruments 380560 Manuel utilisateur

Manuels Instrument de mesure populaires d'autres marques

Suaoki

Suaoki D40 Manuel utilisateur

Elster

Elster BK-G1.6 Manuel utilisateur

Endress+Hauser

Endress+Hauser Deltabar FMD71 Manuel

Duratool

Duratool D03128 Manuel utilisateur

Vega

Vega VEGAPULS 65 Manuel utilisateur

Tonghui

Tonghui TH2618B Manuel utilisateur

Tenmars

Tenmars TM-801 Manuel utilisateur

MSR

MSR 145 Manuel utilisateur

TPS

TPS WP-82 Manuel utilisateur

ELMETRON

ELMETRON CP-511 Manuel utilisateur

PCB Piezotronics

PCB Piezotronics 003C30 Manuel utilisateur

Tenma

Tenma 72-10465 Manuel utilisateur

Endress+Hauser

Endress+Hauser Proline Promag 50 Caractéristiques techniques

Siemens

Siemens SITRANS F Coriolis FCT030 Manuel de la liste des pièces

KLINGER

KLINGER CMF V Series Manuel utilisateur

EXFO

EXFO FTB-2 Manuel d'exploitation et d'entretien

Keysight

Keysight M8290A Manuel utilisateur

ADTEK

ADTEK MW-5 Manuel utilisateur