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 38073 Bedienungsanleitung

Extech Instruments

Extech Instruments MiniTec Series Bedienungsanleitung

Extech Instruments

Extech Instruments 407303 Bedienungsanleitung

Extech Instruments

Extech Instruments EX320 Bedienungsanleitung

Extech Instruments

Extech Instruments EX330 Bedienungsanleitung

Extech Instruments

Extech Instruments MN25 Bedienungsanleitung

Extech Instruments

Extech Instruments 382065 Bedienungsanleitung

Extech Instruments

Extech Instruments 380942 Bedienungsanleitung

Extech Instruments

Extech Instruments TK505 Bedienungsanleitung

Extech Instruments

Extech Instruments EX503 Bedienungsanleitung

Extech Instruments

Extech Instruments 430 Bedienungsanleitung

Extech Instruments

Extech Instruments MG300 Bedienungsanleitung

Extech Instruments

Extech Instruments 38394 Bedienungsanleitung

Extech Instruments

Extech Instruments EX810 Bedienungsanleitung

Extech Instruments

Extech Instruments RHT50 Bedienungsanleitung

Extech Instruments

Extech Instruments EX410 Bedienungsanleitung

Extech Instruments

Extech Instruments LT40 Bedienungsanleitung

Extech Instruments

Extech Instruments 38070 Bedienungsanleitung

Extech Instruments

Extech Instruments EX210 Bedienungsanleitung

Extech Instruments

Extech Instruments 380947 Bedienungsanleitung

Extech Instruments

Extech Instruments EX310 Bedienungsanleitung

Extech Instruments

Extech Instruments MO290 Bedienungsanleitung

Extech Instruments

Extech Instruments 381676 Bedienungsanleitung

Extech Instruments

Extech Instruments RC200 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