Extech Instruments MA145 Bedienungsanleitung

USERGUIDE

TrueRMS300AAC/DCMiniClampMeterwith

Non‐ContactVoltageDetector

ModelMA145

www.GlobalTestSupply.com

Find Quality Products Online at: sales@GlobalTestSupply.com

MA145‐en‐GB_V1.15/15

Introduction

ThankyouforselectingtheExtechMA145300AAC/DCTrueRMSMiniClampMeterwithNon‐

ContactVoltageDetector.TheMA145issmallinsizebutruggedinperformance.



TheMA145measuresAC/DCcurrentto300AandoffersaSmartDataHoldfeature,display

Backlight,In‐rushCurrentmode,DCAZero,LowPassFiltering(LPF),andanon‐contactVoltage

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.GlobalTestSupply.com

Find Quality Products Online at: sales@GlobalTestSupply.com

MA145‐en‐GB_V1.15/15

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.GlobalTestSupply.com

Find Quality Products Online at: sales@GlobalTestSupply.com

MA145‐en‐GB_V1.15/15

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. AutomaticACA/DCAdetect

2. Zeroicon

3. In‐RushCurrentmode

4. LowPassFilter

5. DataHold

6. ACMeasurement

7. DCMeasurement

8. Amperes(current)

9. MainDisplayarea

10. Batterystatusicon

11. Minus(negative)sign

12. Non‐ContactVoltDetecticons

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againtotoggleAC/DC

PresstoaccessVoltagedetectmode

Pressfor>2secondstozeroDCAdisplay

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.GlobalTestSupply.com

Find Quality Products Online at: sales@GlobalTestSupply.com

MA145‐en‐GB_V1.15/15

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.GlobalTestSupply.com

Find Quality Products Online at: sales@GlobalTestSupply.com

MA145‐en‐GB_V1.15/15

AC/DC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Currentmeasurementmode.TheAsymbolwillappearon

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

2. ThemetercanbeusedinAUTOmode(default)wherethemeterdetectsACorDCcurrent

automaticallyorthemetercanbeusedmanually(usethe‘A’buttontotoggleDCandAC).

3. WheninAUTOmode,thedisplayshowstheAUTOiconintheupperleftcorner.

4. ThemeterdisplaywillshowACorDContherightsideofthedisplay.

5. WheninDCCurrentmode,pressandholdZEROfor>2secondstonullthedisplaybefore

takingaDCAmeasurement.

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

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

incorrectuse.

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

InDC,Ifthepolarityisreversed,thedisplaywillshow(‐)minusbeforethevalue.



www.GlobalTestSupply.com

Find Quality Products Online at: sales@GlobalTestSupply.com

MA145‐en‐GB_V1.15/15

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.

TIME

CURRENT

Start Stop

Current

Detection

Threshold

Measured Inrush

Current

100ms Sample Window (60Hz)



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.GlobalTestSupply.com

Find Quality Products Online at: sales@GlobalTestSupply.com

MA145‐en‐GB_V1.15/15

Non‐ContactVoltage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LCDwillflashifthedetectedsignalis50countsgreater

thantheheldreading.



www.GlobalTestSupply.com

Find Quality Products Online at: sales@GlobalTestSupply.com

MA145‐en‐GB_V1.15/15

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.GlobalTestSupply.com

Find Quality Products Online at: sales@GlobalTestSupply.com

MA145‐en‐GB_V1.15/15

Specifications

ELECTRICALSPECIFICATIONS

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

50~100Hz100~400Hz

ACCurrent

60.00A0.01 ±(1.5%+25digits)<3A

±(1.5%+5digits)≥3A

±(2.5%+25digits)<3A

±(2.5%+5digits)≥3A

300.0A0.1

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

DCCurrent

60.00A(1)0.01 ±(1.5%+10digits)(2)

300.0A0.1 ±(1.5%+5digits)

(1)<0.3Avariationwhenmeasuringinvaryingdirections

(2) Add10dtoaccuracyinAUTOAC/DCsensemode

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

LowPassFilter

(LPF)

60.00A0.01 ±(3.5%+25digits)<3A

±(3.5%+5digits)≥3A

300.0A0.1

Cut‐offfrequency(‐3db):160Hz(approximately)

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

Voltage

Detector80V~600VACn/an/a

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

Notes:

Clamppositionerror:±1.5%ofreading

Accuracyisgivenas±(%ofreading+leastsignificantdigit)at23C±5C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squarewavetheaccuracyfor>100Hzis

unspecified.

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.GlobalTestSupply.com

Find Quality Products Online at: sales@GlobalTestSupply.com

Inhaltsverzeichnis

Andere Extech Instruments Messgerät Handbücher

Extech Instruments

Extech Instruments SL400 Bedienungsanleitung

Extech Instruments

Extech Instruments MW12 Bedienungsanleitung

Extech Instruments

Extech Instruments MO220 Bedienungsanleitung

Extech Instruments

Extech Instruments Oyster Series Bedienungsanleitung

Extech Instruments

Extech Instruments 461895 Bedienungsanleitung

Extech Instruments

Extech Instruments RH600 Bedienungsanleitung

Extech Instruments

Extech Instruments 407860 Bedienungsanleitung

Extech Instruments

Extech Instruments MO210 Bedienungsanleitung

Extech Instruments

Extech Instruments CG206 Bedienungsanleitung

Extech Instruments

Extech Instruments EX613 Bedienungsanleitung

Extech Instruments

Extech Instruments AN250W Bedienungsanleitung

Extech Instruments

Extech Instruments LT505 Bedienungsanleitung

Extech Instruments

Extech Instruments ET38 Bedienungsanleitung

Extech Instruments

Extech Instruments DT300 Bedienungsanleitung

Extech Instruments

Extech Instruments ExStik RE300 Bedienungsanleitung

Extech Instruments

Extech Instruments RC100 Bedienungsanleitung

Extech Instruments

Extech Instruments TM100 Bedienungsanleitung

Extech Instruments

Extech Instruments 480836 Bedienungsanleitung

Extech Instruments

Extech Instruments TKG100 Bedienungsanleitung

Extech Instruments

Extech Instruments 461893 Bedienungsanleitung

Extech Instruments

Extech Instruments PQ3450-2-NIST Bedienungsanleitung

Extech Instruments

Extech Instruments DT500 Bedienungsanleitung

Extech Instruments

Extech Instruments EX613 Bedienungsanleitung

Extech Instruments

Extech Instruments RH401 Bedienungsanleitung

Beliebte Messgerät Handbücher anderer Marken

Suaoki

Suaoki D40 Bedienungsanleitung

Elster

Elster BK-G1.6 Bedienungsanleitung

Endress+Hauser

Endress+Hauser Deltabar FMD71 Handbuch

Duratool

Duratool D03128 Bedienungsanleitung

Vega

Vega VEGAPULS 65 Bedienungsanleitung

Tonghui

Tonghui TH2618B Bedienungsanleitung

Tenmars

Tenmars TM-801 Bedienungsanleitung

MSR

MSR 145 Bedienungsanleitung

TPS

TPS WP-82 Bedienungsanleitung

ELMETRON

ELMETRON CP-511 Bedienungsanleitung

PCB Piezotronics

PCB Piezotronics 003C30 Bedienungsanleitung

Tenma

Tenma 72-10465 Bedienungsanleitung

Endress+Hauser

Endress+Hauser Proline Promag 50 Technische Daten

Siemens

Siemens SITRANS F Coriolis FCT030 Stücklistenhandbuch

KLINGER

KLINGER CMF V Series Bedienungsanleitung

EXFO

EXFO FTB-2 Bedienungs- und Wartungshandbuch

Keysight

Keysight M8290A Bedienungsanleitung

ADTEK

ADTEK MW-5 Bedienungsanleitung