Extech Instruments EX350 Bedienungsanleitung

USERGUIDE

TrueRMSDigitalMultimeters

EX350Series



EX350TrueRMSDigitalMultimeter

EX355TrueRMSDigitalMultimeterwithTemperature



EX35x‐en‐GB_V1.212/15

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_V1.212/15

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_V1.212/15

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.

EX35x‐en‐GB_V1.212/15

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

EX35x‐en‐GB_V1.212/15

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



EX35x‐en‐GB_V1.212/15

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



EX35x‐en‐GB_V1.212/15

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_V1.212/15

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.

EX35x‐en‐GB_V1.212/15

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%.

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Andere Extech Instruments Multimeter Handbücher

Extech Instruments

Extech Instruments MN30 Bedienungsanleitung

Extech Instruments

Extech Instruments MN15A Bedienungsanleitung

Extech Instruments

Extech Instruments EX420-NIST Bedienungsanleitung

Extech Instruments

Extech Instruments 450 Bedienungsanleitung

Extech Instruments

Extech Instruments MP510A Bedienungsanleitung

Extech Instruments

Extech Instruments 382860 Bedienungsanleitung

Extech Instruments

Extech Instruments ExStik EC500 Bedienungsanleitung

Extech Instruments

Extech Instruments MN62-K Bedienungsanleitung

Extech Instruments

Extech Instruments CMM-17 Bedienungsanleitung

Extech Instruments

Extech Instruments 411 Bedienungsanleitung

Extech Instruments

Extech Instruments 381626 Bedienungsanleitung

Extech Instruments

Extech Instruments MN26-NIST Bedienungsanleitung

Extech Instruments

Extech Instruments 38073 Bedienungsanleitung

Extech Instruments

Extech Instruments DM4750D Bedienungsanleitung

Extech Instruments

Extech Instruments 430 Bedienungsanleitung

Extech Instruments

Extech Instruments MultiMaster MM560 Bedienungsanleitung

Extech Instruments

Extech Instruments EX570 Bedienungsanleitung

Extech Instruments

Extech Instruments 420 Bedienungsanleitung

Extech Instruments

Extech Instruments EX310 Bedienungsanleitung

Extech Instruments

Extech Instruments 382065 Bedienungsanleitung

Extech Instruments

Extech Instruments EX530 Bedienungsanleitung

Extech Instruments

Extech Instruments Extech 470 Bedienungsanleitung

Extech Instruments

Extech Instruments SDL900 Bedienungsanleitung

Extech Instruments

Extech Instruments MA400 Bedienungsanleitung

Beliebte Multimeter Handbücher anderer Marken

Agilent Technologies

Agilent Technologies 34420A Bedienungsanleitung

Fluke

Fluke 83 Bedienungsanleitung

Hameg

Hameg HM 8012 Bedienungsanleitung

Mastech

Mastech MY70 Bedienungsanleitung

Steren

Steren MUL-300 Bedienungsanleitung

Somogyi Elektronic

Somogyi Elektronic home SMA 92 Bedienungsanleitung

Gossen MetraWatt

Gossen MetraWatt METRAmax 6 Bedienungsanleitung

PeakTech

PeakTech 4000 Gebrauchs- und Pflegehandbuch

YOKOGAWA

YOKOGAWA 90050B Bedienungsanleitung

Gossen MetraWatt

Gossen MetraWatt METRALINE DMM16 Bedienungsanleitung

Fluke

Fluke 8846A Bedienungs- und Wartungshandbuch

Tempo Communications

Tempo Communications MM200 Bedienungsanleitung

Elenco Electronics

Elenco Electronics CM-1555 Bedienungsanleitung

Mastech

Mastech MS8238C Bedienungsanleitung

SDAR

SDAR 830A, 830B, 830D, 830C Bedienungsanleitung

RS PRO

RS PRO RS-9519BT Bedienungsanleitung

BGS technic

BGS technic 8890 Bedienungsanleitung

Amprobe

Amprobe Hexagon 60 Bedienungsanleitung