Datenblatt für EX350 Series Manual von FLIR Extech

Datenblatt - Kommentare/Fehler melden

E_XTECH INSTRUMENTS EXTECH ,. .Ammmmw —v,a« ‘=39.9..99 m m: mum u=r Mcv www.extech.com

USERMANUAL

TrueRMSDigitalMultimeters

EX350Series



EX350TrueRMSDigitalMultimeter

EX355TrueRMSDigitalMultimeterwithTemperature



AdditionalUserManualTranslationsavailableatwww.extech.com



EX35x‐en‐GB_V1.41/17

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

DataHold9

VoltageMeasurements10

10AAC/DCCurrentMeasurements12

mA/µAAC/DCCurrentMeasurements13

Non‐ContactVoltageDetector14

ResistanceMeasurements15

ContinuityMeasurements16

CapacitanceMeasurements16

LoZACVoltageMeasurements17

VariableFrequencyVoltageMeasurements17

DiodeTest18

TemperatureMeasurements(EX355only)19

Hzand%DutyCycleTest20

RelativeMode20

MaxMinMode20

5.MAINTENANCE21

6.SPECIFICATIONS22

EX35x‐en‐GB_V1.41/17

1. Introduction

ThankyouforselectingtheExtechEX350SeriesMeter.



TheEX350Seriesarefeature‐packedTrueRMSdigitalmultimeters.InadditiontostandardDMM

features,theyofferaLowImpedance(LoZ)mode,BacklitLCD,Non‐ContactVoltageDetector

thatsafelysenseselectricalsources,Variablefrequencyvoltagemeasurement,andTemperature

(EX355).



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(EX355)or4000count(EX350)digitaldisplay

 LargebacklitLEDdisplay

 TrueRMSACVmeasurements

 VariableFrequencyVoltagemeasurements

 LoZmodeprotectsreadingsfromghostvoltages

 AutoandManualRangemodes

 0.5%DCVaccuracy

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

 Temperaturemeasurements(ModelEX355only)withincludedtemperatureprobe

 10AAC/DCcurrentmeasurements

 Non‐ContactVoltageDetector

 Visualandaudiblecontinuitymeasurementalert

 Lowbatteryindicator

 CATIII600V



EX35x‐en‐GB_V1.41/17

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,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.

+5|3m2nmﬂ5>l> PERIEC UVERVU Eqmpme taken m Note 7 E UVERVU Eqmpme msmlm Note 7 E UVERVU Eqmpme Note 7 E permane UVERVU Eqmpme Note 7 E

EX35x‐en‐GB_V1.41/17

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



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

13 12 5/ n_ \11

EX35x‐en‐GB_V1.41/17

3. Descriptions

MeterDescription(EX350pictured)

1. Non‐ContactVoltageDetectorandLED

2. LCDmulti‐functiondisplay

3. ManualRangebutton

4. Hz%button

5. ModeandLPFButton

6. Rotaryfunctionselectswitch

7. 10Ainputterminal

8. uAandmAinputterminal

9. Common(‐)inputterminal

10. Positiveinputterminal:Voltage,Resistance,Capacitance,Temperature(EX355),andµA

11. DataHoldandbacklightbutton

12. REL(RELATIVE)button

13. MAXMINbutton

*Batterycompartmentonbackofmeter



Fig3‐1METERDESCRIPTION



BREE -H- m) “meg LmsAMkQHzn mVpAF °C°F%D ( RED 1'! F! F! ..1§.|.IJ.EI.LIL [:1 Auto MAX-MIN LPF ch

EX35x‐en‐GB_V1.41/17

DisplayIconDescriptions

 Auto:Automaticrangemode

 HOLD:Displayhold

 :Relativemode

 AC:AlternatingCurrentMeasurements

 DC:DirectCurrentMeasurements

 :Maindisplaydigits

 A:Amperes(Current)

 V:Volts(Voltage)

 oC/oF:Temperatureunits

 F:Farads(Capacitancemeasurementunits)

 Hz:Hertz(Frequencymeasurementsunit)

 %DutyCycle(AConly)

 Ω(Ohms):Resistancemeasurementunit

 LPFVariablefrequencyvoltagemode

 :Batterystatusicon

 ‐Minus(negative)sign

 MAX‐MINPeakMaximumandMinimumreadingmemory

 :Diodemeasurementmode

 :Continuitymodesymbol

 AutoPowerOffenabled

 Prefixes:µ(micro:10‐6),m(milli:10‐3),n(nano:10‐9),k(kilo:103),M(mega:106)



Fig3‐2METERDISPLAY



V; <—> m? H uA mA AE H -|(--»I))) 0m) 9.". H -» H IEL MAX MIN

EX35x‐en‐GB_V1.41/17

Push‐ButtonDescriptions



PresstheM(MODE)buttontoperformthefollowing:

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

(EX355)AC DC

AC DC

Ω Ω  

TEMP(EX355)°C °F



PressandHoldLPFintheACVfunctiontoselectvariablefrequencytests.



PressR(Range)toswitchfromAutotoManualRange.HoldtoreturntoAutoRange.



PressactivatesRelative mode.



PresstoactivateMaxMinMode



PresstoturnHOLDon/off.PressandHoldtoturnbacklighton/off



PresstoselectHzor%inACVoltageorACCurrentmodes

EX35x‐en‐GB_V1.41/17

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15

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.

DisableAutoPowerOFF

ThemeterwillautopowerOFFafter15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meterwillbeep5times.

3. Releasethebutton.

4. APOwillnowbedisableduntilthenextcycleofpower.

DisplayBacklight

WiththemeterpoweredON,pressandholdthebacklightbutton fortwosecondstoswitchthe

backlightONorOFF.Notethatexcessiveuseofthebacklightwillshortenthebatterylife.

Whenthepowersupplyvoltageofthebatteryfallsto2.6V,theLCDbacklightwillbefaintor

unusable;themeasurementfunctioncanbeusednormallyhowever.



DataHold

TofreezetheLCDmeterreading,presstheH(HOLD)button.Whiledataholdisactive,theH

displayiconappearsontheLCD.PresstheHbuttontoreturntonormaloperation.TheHiconwill

switchOFF.

99 Fig 4<1 ac="" v0="">

EX35x‐en‐GB_V1.41/17

VoltageMeasurements

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.

Forsafety,besuretomeasureaknownvoltagebeforeusingtheinstrumentonan

unknowncircuit



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orthemposition.

3. PresstheMbuttontoselectACorDC(EX355only)

4. ThemeterdefaultstotheAutoRangemode(AutodisplayedonLCD).PresstheRbutton

toaccessthemanualrangemode.PresstheRbuttontostepthroughtheranges.Press

andholdtheRbuttontoreturntotheAutoRangemode(Autowillbedisplayed).

5. Touchthetestprobetipstothecircuitundertest.

6. Readthedigitalvalueofthemeasurementinthedisplay.Thedisplaywillalsoindicate

theproperdecimalpointandmeasurementtype/unitssymbols.

7. UsetheHz/%buttontoviewthefrequency(Hz)orthedutycycle(%)ofthemeasured

voltage



Fig4‐1ACVOLTAGEMEASUREMENTS

%DutyCycleNote:DutyCyclemeasurementsare

AConlyforthismeter.Measurementsignalsmust

be‘zerocrossing’andmustreach‐0.7Vforthe

metertoproperlydisplayDutyCycle%.

mV: V

EX35x‐en‐GB_V1.41/17

DC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. MovetheFunctionSwitchtotheorposition.

3. PresstheMbuttontoselectACorDC

4. ReadtheWarningandCautionstatementsatthebeginningofthissectiontodetermine

whetherornottousethetestleadprobecovers.

5. Touchthetestprobetipstothecircuitundertest.Besuretoobservethecorrectpolarity

(redleadtopositive,blackleadtonegative).

6. ThemeterdefaultstotheAutoRangemode(AutodisplayedonLCD).PresstheRbutton

toaccessthemanualrangemode.PresstheRbuttontostepthroughtheranges.Press

andHoldtheRbuttontoreturntotheAutoRangemode(Autowillbedisplayed).

7. Readthedigitalvalueofthemeasurementinthedisplay.Thedisplaywillalsoindicate

theproperdecimalpointandmeasurementtype/unitssymbols.Ifthepolarityis

reversed,thedisplaywillshow(‐)minusbeforethevalue.

8. ThemeteriscapableofmeasuringDCvoltagesto600V.



Fig4‐2DCVOLTAGEMEASUREMENTS



[>9 Fig 4—3 Ac/DC 1

EX35x‐en‐GB_V1.41/17

10AAC/DCCurrentMeasurements

WARNING:Donothandlethetestleadsabovethefinger/handguardbarrier.

CAUTION:ObserveCATIII600VwithrespecttoEarthGround.

1. InserttheblacktestleadintotheCOMterminalandtheredtestleadintotheAterminal.

2. Turnthemeter’sfunctionswitchtotheposition.TheAsymbolwillappearonthe

displayindicatingAmperes(Amps).

3. PresstheMbuttontoselectACorDC.

4. ThemeterdefaultstotheAutoRangemode.WheninAutomode,thedisplayshowsthe

Autoicon.PresstheRbuttontomanuallyrangethemeter.PresstheRbuttontostep

throughtheranges.PressandHoldtheRbuttontoreturntotheAutoRangemode.

5. Currentmeasurementsmustbetakeninserieswiththecircuitundertest.See

accompanyingdiagram.

6. Touchtheblacktestleadtothenegativesideofthecircuitandtheredtestleadtothe

positivesideofthecircuit.

7. Readthecurrentmeasurementinthedisplayrepresentedbynumericaldigits.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.

8. ForACcurrent,presstheHz/%buttontoviewthefrequency(Hz)orthedutycycle(%)of

themeasuredcurrent.



Fig4‐3AC/DC10ACURRENTMEASUREMENTS

%DutyCycleNote:DutyCyclemeasurementsare

AConlyforthismeter.Measurementsignalsmust

be‘zerocrossing’andmustreach‐0.7Vforthe

metertoproperlydisplayDutyCycle%.

AA uA; mAg.

EX35x‐en‐GB_V1.41/17

mA/µAAC/DCCurrentMeasurements

WARNING:Donothandlethetestleadsabovethefinger/handguardbarrier.

CAUTION:ObserveCATIII600VandwithrespecttoEarthGround.

1. InserttheblacktestleadintotheCOMterminalandtheredtestleadintothemA/µA

terminal.

2. Turnthemeter’sfunctionswitchtotheorposition.ThemAorµAunits

symbolwillappearonthedisplay.

3. ThemeterdefaultstotheAutoRangemode.WheninAutomode,thedisplayshowsthe

Autoicon.PresstheRbuttontomanuallyrangethemeter.PresstheRbuttontostep

throughtheranges.PressandHoldtheRbuttontoreturntotheAutoRangemode.

4. PresstheMbuttontoselectACorDC.

5. Currentmeasurementsmustbetakeninserieswiththecircuitundertest.See

accompanyingdiagram.

6. Touchtheblacktestleadtothenegativesideofthecircuitandtheredtestleadtothe

positivesideofthecircuit.

7. Readthecurrentmeasurementinthedisplayrepresentedbythenumericaldigits.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.



Fig4‐4mA/µAAC/DCCURRENTMEASUREMENTS

EX35x‐en‐GB_V1.41/17

Non‐ContactVoltageDetector

WARNING:Itispossibleforvoltagetobepresentinacircuitevenifthemeterdoesnot

beeporflashtheNCVLEDlampatthetopofthemeter.Alwaysverifymeteroperationona

knownliveACcurrentcircuitandverifythatthebatteriesarefreshbeforeuse.

TheaudiblebeepersoundsandtheLEDlampatthetopofthemeterflasheswhenthemeter

sensesanelectricalvoltagefield.

IfthemeterdoesnotemitatoneorflashtheLEDinthismode,thereisstillthepossibilitythat

voltageispresent.Pleaseusecaution.

1. TurnthefunctionswitchtotheNCVpositiontoaccesstheNon‐ContactVoltageDetect

mode.

2. EFisdisplayedwheninthismodeisselected.

3. Totest,placethemeternearasourceofelectricalenergy.Notethatthetipofthe

meteroffersthehighestsensitivity.

4. Ifavoltageisdetected,themeterwillbeep,theNCVLEDwillflashandoneormore“‐“

willappearonthedisplay.Forhigherdetectedvoltagesthebeepandflashratewill

increaseandthenumberof“‐“willincrease.



Fig4‐5NON‐CONTACTVOLTAGEDETECTOR



EX35x‐en‐GB_V1.41/17

ResistanceMeasurements

Cautions:SwitchOFFpowertothedeviceundertestbeforemeasuring.Donottestoncircuits

ordeviceswhere60VDCor30VACispresent.

1. Inserttheblacktestleadbananaplugintothenegative(COM)jack.Inserttheredtest

leadbananaplugintothepositive(V/Ω)jack.

2. TurntheFunctionSwitchtotheΩposition.

3. UsetheMbuttontoselecttheΩicononthedisplayindicatingresistanceonly(without

theaudiblecontinuityiconshowing).

4. ThemeterdefaultstotheAutoRangemode(AutodisplayedonLCD).PresstheRbutton

toaccessthemanualrangemode.PresstheRbuttontostepthroughtheranges.Press

andHoldtheRbuttontoreturntotheAutoRangemode(Autowillbedisplayed).

5. Touchthetestprobetipsacrossthecircuitorpartundertest.Itisbesttodisconnectone

sideofthepartundertestsotherestofthecircuitwillnotinterferewiththeresistance

reading.

6. Readtheresistancevalueinthedisplay.Thedisplaywillindicatetheproperdecimal

pointandvalue.Ifthereadingisoutofrange,theOLdisplayiconwillappear.



Fig4‐6RESISTANCE/CONTINUITYMEASUREMENTS

11)) n») -u- -u-

EX35x‐en‐GB_V1.41/17

ContinuityMeasurements

1. InserttheblacktestleadintothenegativeCOMterminalandtheredtestleadintothe

positiveterminal.

2. Setthefunctionswitchtothe position.

3. UsetheMbuttontoselecttheContinuitymode.LookfortheContinuityicononthe

display.

4. Touchthetestprobetipsacrossthewireorcircuitundertest.

5. Thecontinuitythresholdisbetween10Ωand100Ω.Formeasurementsbelow10Ωthe

buzzerwillalwayssound.Formeasurementsabove400Ω(600ΩforEX355)theOLwill

alwaysdisplay.

CapacitanceMeasurements

WARNING:Toavoidelectricshock,removepowertothecircuitundertestanddischargethe

capacitorundertestbeforemeasuring.Donottestoncircuitsordeviceswhere60VDCor

30VACispresent.

1. Setthefunctionswitchtothe capacitanceposition.

2. InserttheblacktestleadbananaplugintothenegativeCOMjack

andtheredtestleadbananaplugintothepositivejack.

3. PresstheMbuttontoselecttheunitofmeasuresymbolF.

4. Touchthetestprobetipsacrossthepartundertest.

5. Readthecapacitancevalueinthedisplay.

6. Thedisplaywillindicatetheproperdecimalpointandvalue.

Note:Forlargevaluesofcapacitanceseveralsecondsmayberequiredbeforethereading

stabilizes.



Fig4‐7CAPACITANCEMEASUREMENTS

EX35x‐en‐GB_V1.41/17

LoZACVoltageMeasurements

WhenthefunctionswitchisturnedtotheLoZposition,themeterappliesalowinput

impedancecircuittotheinputterminalstoeliminatestrayorghostvoltages.Refertothe

VoltageMeasurementssectionearlierinthisguideforSafetyinformationandconnection

diagrams.

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. MovetheFunctionSwitchtotheLo‐Zposition.

3. Touchthetestprobetipstothecircuitundertest.

4. ThemeterdefaultstotheAutoRangemode(AutodisplayedonLCD).Manualrange

cannotbeusedinthismode.

5. Readthedigitalvalueofthemeasurementinthedisplay.Thedisplaywillalsoindicate

theproperdecimalpointandmeasurementtype/unitssymbols.



VariableFrequencyVoltageMeasurements

WhenthefunctionswitchisturnedtotheLPFpositionthemetercanmeasurevoltageon

signalswithvaryingfrequencyasinVariableFrequencyDrives(VFD).RefertotheVoltage

MeasurementssectionearlierinthisguideforSafetyinformationandconnectiondiagrams.

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. MovetheFunctionSwitchtotheLPFposition.

3. SelectACvoltage

4. PressandHoldtheLPFbuttonfortwoseconds.ThemeterwillbeepandtheLPFiconwill

appearonthedisplay.

5. Touchthetestprobetipstothecircuitundertest.

6. ThemeterdefaultstotheAutoRangemode.Manualrangecannotbeusedinthismode.

7. Readthedigitalvalueofthemeasurementinthedisplay.Thedisplaywillalsoindicate

theproperdecimalpointandmeasurementtype/unitssymbols.



EX35x‐en‐GB_V1.41/17

DiodeTest

1. InserttheblacktestleadbananaplugintothenegativeCOMjackandtheredtest

leadbananaplugintothepositivejack.

2. Turnthefunctionswitchtoposition.UsetheMbuttontoselectthediodefunctionif

necessary(thediodeandvoltagesymbolswillappearontheLCDwheninDiodetestmode).

3. Touchthetestprobetipstothediodeorsemiconductorjunctionundertest.Notethe

meterreading.

4. Reversethetestleadpolaritybyreversingtheredandblackleads.Notethisreading.

5. Thediodeorjunctioncanbeevaluatedasfollows:

 Ifonereadingdisplaysavalue(typically0.400Vto0.900V)andreversereadingdisplays

OL,thediodeisgood.

 IfbothreadingsdisplayOLthedeviceisopen.

 Ifbothreadingsareverysmallor‘0’,thedeviceisshorted.



Fig4‐8DIODETESTING



EX35x‐en‐GB_V1.41/17

TemperatureMeasurements(EX355only)

1. InsertthesuppliedtemperatureprobeintotheCOM(‐)andpositive(+)terminalsobserving

correctpolarity.

2. TurnthefunctionswitchtotheTempposition.UsetheMbuttontoselectthedesiredunit

ofmeasure.

3. Touchthetemperatureprobetiptothedeviceundertestorleavethetemperatureprobe

intheopenairtomeasureambienttemperature.

4. ReadthetemperaturemeasurementontheLCD.



Fig4‐9TEMPERATUREMEASUREMENTS



EX35x‐en‐GB_V1.41/17

Hzand%DutyCycleTest

HzandDutyCycle%areavailableintheACVoltageorACCurrentfunctionsorcanbeselected

directlyintheHz%positionofthefunctionswitch.FollowtheACvoltageorACCurrent

proceduresforoperationaldetails.



RelativeMode

ThisfunctionappliesonlytoVoltage,Current,TemperatureandCapacitancemodes.InRelative

modeareferencereadingcanbestoredwithwhichtocomparesubsequentreadings.Pressthe

RELbuttontostorethedisplayedreadinginmemory,thisbecomesthereference.Thesymbol

willbedisplayedwhentheRelativemodeisactive.Subsequentreadingswillnowbe

comparedtothestoredreference(DisplayedReading=MeasurementminusReference).Press

theRELbuttonagaintoexittheRelativemode;theRelativesymbolwillswitchoff.

MaxMinMode

PresstheMAXMINbuttontostartrecordingtheMaxandMinmeasuredvalues.TheMAXicon

willappearonthedisplay.PresstheMAXMINbuttontostepthroughandviewtheMaxvalue,

theMinvalueandtheMax‐Minvalue.PressandHoldtheMAXMINbuttonfor2secondstoexit

themode.MaxMinisavailableforVoltage,Current,ResistanceandTemperature.Manualrange

isautomaticallyselectedinthismode

%DutyCycleNote:DutyCyclemeasurementsareAConlyforthismeter.Measurement

signalsmustbe‘zerocrossing’andmustreach‐0.7VforthemetertoproperlydisplayDuty

Cycle%.

EX35x‐en‐GB_V1.41/17

5. Maintenance

WARNING:Toavoidelectricalshock,removethetestleads,disconnectthemeterfrom

anycircuitandturnOFFthemeterbeforeopeningthecase.Donotoperatewithanopencase.

BatteryandFuseReplacement

BatteryReplacement

1. Removethetestleadsfromthemeter.

2. Removethemeter’sprotectivecover. 

3. RemovethePhillipsheadscrewthatsecuresthe

batterycompartmentatthebackofthemeter.

Openthebatterycompartmentandreplacethetwo

AAbatteriesobservingcorrectpolarity.Re‐assemble

themeterbeforeuse

Safety:Pleasedisposeofbatteriesresponsibly;never

disposeofbatteriesinafire,batteriesmayexplodeor

leak.Ifthemeterisnottobeusedfor60daysormore,

removethebatteryandstoreseparately.



Fig5‐1BATTERYANDFUSEREPLACEMENT

FuseReplacement

The600mAfusecanbereplacedfromthebatterycompartment.

(600mA/600V6.3x32mmceramicfastblow)

4. Toreplacethe10Afuse,removethefour(4)screwsthatsecurethemeterhousing.Remove

thesmallPhillipsscrewinthebatterycompartment.

5. Replacethefusewithoneofthesametypeandrating.Reassemblethemeterbeforeuse.

(10A/600V6.35x32mmceramicfastblow)



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.



CleaningandStorage

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

EX35x‐en‐GB_V1.41/17

6. Specifications

ELECTRICALSPECIFICATIONS

Accuracyisgivenas±(%ofreading+leastsignificantdigit)at23C±5Cwithrelativehumidity

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

1. TemperatureCoefficientis0.1xspecifiedaccuracy/C,<18C(64.5F),>28C(82.4F)

2. ACFunctionality:ACVandACAspecificationsareACcoupled,TrueRMS,45to400Hz;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

FunctionRangeResolutionAccuracy

DCVoltage

EX350EX355

40.00mV60.00mV10μV±(0.7％＋5digits）

400.0mV600.0mV0.1mV±(0.5％＋2digits）

4.000V6.000V1mV

±(0.5％＋3digits）

40.00V60.00V10mV

400.0V600.0V0.1V

600V600V1V

InputImpedance:10M(1GΩformVrange);OverloadProtection:AC/DC600V

ACVoltage

40.00mV60.00mV10μV±(1.0％＋3digits）

400.0mV600.0mV0.1mV

4.000V6.000V1mV

±(0.8％＋3digits）

40.00V60.00V10mV

400.0V600.0V0.1V

600V600V1V±(1.0％＋3digits）

LPF400.0V600.0V0.1V±(4.0％＋3digits）

LoZ600V600V ‐‐‐‐‐‐‐ ±(1.2％＋5digits）

Maximuminputvoltage:±600Vrms

Inputimpedance:10MΩforallranges(ACVfrequencyresponseis45~400Hz)

Allowthemetertostabilizefor10minutesafterusingLoZ(lowimpedance)mode

Accuracystatedfor5to100%ofrange



EX35x‐en‐GB_V1.41/17

Function

DCCurrentRangeResolutionAccuracy

μA

EX350EX355

400.0μA600.0μA0.1μA

±(0.7%+2digits)

4000μA6000μA1μA

mA40.00mA60.00mA10μA

400.0mA600.0mA0.1mA

A4.000A6.000A1mA±（1.0%+3digits)

10.00A10.00A10mA

Overloadprotection:

μAmArange:(F1)fuse(6.3×32)mm:FF0.6AH600V(CE)fastacting

10Arange:(F2)fuse(6.3×32)mm:F10AH600V(CE)fastacting

ACCurrentRangeResolutionAccuracy

μA

EX350EX355

400.0μA600.0μA0.1μA

±(1.0%+3digits)

4000μA6000μA1μA

mA40.00mA60.00mA10μA

400.0mA600.0mA0.1mA

A4.000A6.000A1mA±（1.2%+3digits)

10.00A10.00A10mA

ACAFrequencyResponse:45~400Hz

FunctionRangeResolutionAccuracy

ResistanceEX350EX355

400.0Ω*400.0Ω*600.0Ω*0.1Ω ±(1.0%+2digits)

4.000kΩ 4.000kΩ 6.000kΩ 1Ω

±(0.8%+2digits)

40.00kΩ 40.00kΩ 60.00kΩ 10Ω

400.0kΩ 400.0kΩ 600.0kΩ 100Ω

4.000MΩ 4.000MΩ 6.000MΩ 1kΩ ±(1.2%+3digits)

40.00MΩ 40.00MΩ 60.00MΩ 10kΩ ±(1.5%+5digits)

Range:Themeasuredvalue=displayedvalueofmeasurement‐the short‐circuitvalueoftheprobe

Open‐circuitvoltageisapprox.:*1V;overloadprotection:600V‐PTC



EX35x‐en‐GB_V1.41/17

CapacitanceRangeResolutionAccuracy

6.000nF1pFInRELmode:

±(4%+10digits)

60.00nFto600.0μF10pFto0.1μF±(4%+5digits)

6.000mFto60.00mF1μFto10μF±10%

Overloadprotection:600V‐PTC

Tooptimizeaccuracy,ifthemeasuredcapacitanceis≤1μFusetheRELmeasurementmode

Frequency9.999Hzto 9.999MHz0.001Hzto 0.001MHz±(0.1%+5)

DutyCycle0.1%～

99.9%0.1%Unspecified

Overloadprotection:600V‐PTC

Inputamplitude(a):(DCleveliszero)

≤100kHz:100mVrms≤a≤20Vrms

＞100kHz～1MHz:200mVrms≤a≤20Vrms

＞1MHz:500mVrms≤a≤20Vrms

＞5MHz～10MHz:900mVrms≤a≤20Vrms

Dutycycle%:Appliestofrequencymeasurementsonly(≤100kHz)

FrequencyforVoltageorCurrentfunctions:

Frequency<1kHz

ACvoltage:inputamplitudeofmVrange≥100mV,inputamplitudeofVrange≥therange×6%

ACcurrent:inputamplitude(a):4000/6000μA,400/600mA,10Arange:a≥therange×6%,

400/600μA,40/60mA,4/6Arange:a≥therange×60%

FunctionResolutionRemarks

Continuity0.1Ω

Continuitythresholdis10Ω~100Ω.For

measurements<10Ωthebuzzerwillsound.For

measurements>400Ω(>600ΩEX355)theOL

symbolwilldisplay.

Diode1mV

Open‐circuitvoltageisapprox.:3.2V.

TypicalvoltageofasiliconPNjunctionisinthe

rangeof:0.5to0.8V

TemperatureEX355RangeResolution‘Accuracy

°C

‐40to0°C

1°C

±3°C

>0to100°C±(1.0%+3)

>100to1000°C±(2.0%+3)

°F

‐40to32°F

1°F

±5°F

>32to212°F±（1.5%+5)

>212to1832°F±（2.5%+5)

Type‐Kthermocoupleproberequired.

Themaximumtemperaturerangeforthesuppliedprobeis230oC/446oF.

EX35x‐en‐GB_V1.41/17

GENERALSPECIFCATIONS

Display EX3504000count,EX3556000countMulti‐FunctionLCD

Over‐rangeindication“OL”isdisplayed

Conversionrate2to3updatespersecond

MaximumVoltage600VACRMSor600VDCmaximumappliedtoanyterminal

PolarityindicationAutomatic:positiveimplied,negativeindicated(‐)

Lowbatteryindicationisdisplayed.

AutoPowerOFFAfter15minutes(canbedisabledbyholdingtheM[MODE]button

whileturningthemeterON)

OperatingTemperatureandHumidity

‐10~10C(32to104F)

0to30C(30to86F);<75%RHmaximum

30to40C(86to104F);<50%RHmaximum

StorageTemperatureandHumidity

‐10to50C(14to122F);<80%RHmaximum(withbattery

removed)

OperatingAltitude2000m(6562’)

Batterypower (2)AAbatteries(batterylife130hourstypicalwithalkalinebattery

types)

Fuseprotection10Aterminal(F2):F10AH600Vquick‐breakfuse(6.3x32)mm

mA,μAterminal(F1):FF600mAH600Vquick‐breakfuse(6.3x32)mm

Weight Includingbattery407g(14.36oz)

Dimensions(WxHxD)180x86x55.6mm(7.1x3.4x2.2in.)

SafetyStandardsComplieswithCSASTDC22.2NO.60101‐1,61010‐2‐030,IEC61010‐2‐

033,CATIII600V,PollutionDegree2

EMCEN61326‐1

ForIndoorUse



Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

ISO‐9001Certified

Datenblatt für EX350 Series Manual von FLIR Extech

INFORMATION

HILFE

KONTAKT

FOLGEN SIE UNS