Extech Instruments MiniTec Series Manuale utente

USERMANUAL



MiniTecTMSeries

ManualRangingMiniMultiMeter

ModelMN35



MN35-EU-EN V2.3 4/13

Introduction

CongratulationsonyourpurchaseofExtech’sMN35ManualRangingMultimeter.Thismeter

measuresAC/DCVoltage,DCCurrent,Resistance,Temperature,BatteryTest,DiodeTestand

Continuity.Thismeter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,andCustomerSupport.



Safety

InternationalSafetySymbols

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

manualforfurtherinformation.



Thissymbol,adjacenttoaterminal,indicatesthat,undernormaluse,hazardousvoltages

maybepresent



Doubleinsulation



SafetyPrecautions

1. Improperuseofthismetercancausedamage,shock,injuryordeath.Readandunderstandthis

usermanualbeforeoperatingthemeter.

2. Makesureanycoversorbatterydoorsareproperlyclosedandured.

3. Alwaysremovethetestleadsbeforereplacingthebatteryorfuses.

4. Inspecttheconditionofthetestleadsandthemeteritselfforanydamagebeforeoperatingthe

meter.Repairanydamagebeforeuse.

5. Donotexceedthemaximumratedinputlimits.

6. Usegreatcarewhenmakingmeasurementsifthevoltagesaregreaterthan25VACrmsor

35VDC.Thesevoltagesareconsideredashockhazard.

7. Alwaysdischargecapacitorsandremovepowerfromthedeviceundertestbeforeperforming

Diode,ResistanceorContinuitytests.

8. Removethebatteryfromthemeterifthemeteristobestoredforlongperiods.

9. Toavoidelectricshock,donotmeasureACcurrentofanykind

InputLimits

FunctionMaximumInput

VDC,VAC600VDC/AC

Resistance,Diode,Continuity500VDC/AC

mADC250mADC

10ADC10ADC(15sec.maxevery15min.)



MN35-EU-EN V2.3 4/13

MeterDescription

1. LCDDisplay

2. Holdbutton

3. Functionswitch

4. COMjack

5. 10Ajack

6. Positivejack



Note:Tiltstandandbattery

accessisontherearofunit.

OperatingInstructions

Note:If“H”andablankscreenappearwhenthemeteristurnedontheHOLDfeatureisactive.

PresstheHOLDbuttontoexittheHOLDmode.

ACor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jack.

2. TurntherotaryswitchtothehighestVACorVDCposition.

3. Touchthetestprobestothecircuitundertestandreadthevoltageonthedisplay.

4. Resetthefunctionswitchtosuccessivelylowerpositionstoobtainahigherresolutionreading.If

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

DCCurrentMeasurements

CAUTION:Donotmakecurrentmeasurementsonthe10Ascaleforlongerthan15seconds

followedbya15minutecooldownperiod.Exceeding15secondsmaycausedamagetothe

meterand/orthetestleads.

1. InserttheblacktestleadbananaplugintothenegativeCOMjack.

2. Forcurrentmeasurementsupto200mADC,setthefunctionswitchtothe200mADCposition

andinserttheredtestleadbananaplugintotheV//mAjack.

3. Forcurrentmeasurementsupto10ADC,setthefunctionswitchtothe10ADCrangeandinsert

theredtestleadbananaplugintothe10Ajack.

4. Removepowerfromthecircuitundertest,thenopenupthecircuitatthepointwhereyouwish

tomeasurecurrent.

5. Touchtheblacktestprobetiptothenegativesideofthecircuit.

Touchtheredtestprobetiptothepositivesideofthecircuit.

6. Applypowertothecircuit.

7. Readthecurrentinthedisplay.

MN35-EU-EN V2.3 4/13

Resistance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//mAjack.

2. Setthefunctionswitchtothehighestposition.

3. 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.

4. Readtheresistanceinthedisplayandthensetthefunctionswitchtothelowestpositionthatis

greaterthantheactualoranyanticipatedresistance.



TemperatureMeasurements

WARNING:Toavoidelectricshock,disconnecttestleadsfromanysourceofvoltagebefore

makingatemperaturemeasurement.Besurethatthethermocouplehasbeenremovedbefore

changingtoanyothermeasurementfunction.

1. InsertthetypeKthermocoupleprobeintotheV//mAandCOMjacks.

2. TurntherotaryswitchtotheoForoCposition.

3. Readthetemperatureonthedisplay.

Continuity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//mAjack.Observepolarity.

2. Turntherotaryswitchtothe•)))position.

3. Touchthetestprobestothecircuitordeviceundertest.Iftheresistanceislessthan

approximately40thebuzzerwillsound.

Diode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//mAjack.

2. Turntherotaryswitchtothe•)))position.

3. Touchthetestprobestothediodeundertest.Forwardvoltagewillindicate0.4Vto0.7V.

Reversevoltagewillindicate“1.”.Shorteddeviceswillindicatenear0mVandanopendevice

willindicate“1.”inbothpolarities.

BatteryTest

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

plugintothepositiveVjack.

2. Turntherotaryswitchtothe1.5Vor9VBATposition.

3. Connecttheredtestleadtothepositivesideofthe1.5Vor9Vbatteryandtheblacktestleadto

thenegativesideofthe1.5Vor9Vbattery.

4. Readthevoltageinthedisplay.

GoodWeakBad

9Vbattery:>8.2V7.2to8.2V<7.2V

1.5Vbattery:>1.35V1.22to1.35V<1.22V

DataHold

PresstheHoldbuttontofreezethereadinginthedisplay.“H”willappearintheLCD.Pressthe

keyagaintoreleasethedisplay.

MN35-EU-EN V2.3 4/13

Maintenance

WARNING:Toavoidelectricshock,disconnectthetestleadsfromanysourceofvoltage

beforeremovingthebattery/fusecover.



WARNING:Toavoidelectricshock,donotoperateyourmeteruntilthebattery/fusecoverisin

placeandfastenedsecurely.

ThisMultimeterisdesignedtoprovideyearsofdependableservice,ifthefollowingcare

instructionsareperformed.

1. Keepthemeterdry.

2. Useandstorethemeterinmildambientconditions.Temperatureextremescanshortenthelife

oftheelectronicpartsanddistortormeltplasticparts.

3. Handlethemetergently.Droppingitcandamagetheelectronicpartsorthecase.

4. Keepthemeterclean.Wipethecaseoccasionallywithadampcloth.DONOTusechemicals,

cleaningsolventsordetergents.

5. Useonlyfreshbatteriesoftherecommendedsizeandtype.Removeoldorweakbatteriesso

theydonotleakanddamagetheunit.

6. Ifthemeteristobestoredforalongperiodoftime,thebatteriesshouldberemovedtoprevent

damagetotheunit.

MN35-EU-EN V2.3 4/13

BatteryReplacement

WARNING:Toavoidelectricshock,disconnectthetestleadsfromanysourceofvoltage

beforeremovingthebattery/fusecover.

1. Disconnectthetestleadsfromthemeter.

2. Removetherubberholster(ifinplace).

3. RemovethetwoscrewssecuringtherearcoverusingaPhillipsheadscrewdriver.

4. Liftthecoveroffandreplacethebatteryobservingthecorrectpolarity.

5. Insertthenewbatteryintothebatteryholder.

6. Replacetherearcoverandsecurewiththescrews.



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.



OtherBatterySafetyReminders

oNeverdisposeofbatteriesinafire.Batteriesmayexplodeorleak.

oNevermixbatterytypes.Alwaysinstallnewbatteriesofthesametype.

FuseReplacement

WARNING:Toavoidelectricshock,disconnectthetestleadsfromanysourceofvoltage

beforeremovingbattery/fusecover.

1. Disconnectthetestleadsfromanycircuitbeingmeasured.

2. Removetherubberholster(ifinplace).

3. RemovethetwoscrewssecuringtherearcoverusingaPhillipsheadscrewdriver.Removethe

rearcover.

4. Removetheoldfusebygentlypullinguponit.

5. Installthenewfusebygentlypushingitintotheholder.

6. Alwaysuseafuseofthepropersizeandvalue;250mA/250Vfastblow.

7. Replacetherearcoverandsecurewiththescrews.



MN35-EU-EN V2.3 4/13

Specifications

FunctionRangeAccuracy

200.0mV

2.000V

20.00V

200.0V

(0.5%reading+2digits)

DCVoltage(VDC)

600V(0.8%reading+2digits)

200.0VACVoltage(VAC)

(40‐400Hz)600V

(1.2%reading+10digits)

200.0mA(1.5%reading+2digits)

DCCurrent(ADC)

10.00A(3.0%reading+5digits)

200.0(0.8%reading+4digits)

2.000k

20.00k

200.0k

(0.8%reading+2digits)

Resistance

20.00M(3.0%reading+3digits)

TempF



TempC



‐4to1400F



‐20to750C

‐4to59°F;(2.5%reading+19digits)

60to750°F(1.0%reading+9digits)

751;to1400°F;(2.5%reading+19digits)



‐20to16C;(2.5%reading+10digits)

17to400C;(1.0%reading+5digits),

400to750C;(2.5%reading+10digits)

(probeaccuracynotincluded)

AccuracyStatedat23oC5oC(73oF10oF)andlessthan70%RH

DiodeTestTestcurrentof1mAmaximum,opencircuitvoltage2.8VDCtypical

ContinuityCheckAudiblesignalwillsoundiftheresistanceislessthanapproximately<405

TemperaturesensorRequirestypeKthermocouple

InputImpedance10M(VDC)and4.5M(VAC)

Display1999countLCD

Overrange“1or‐1”isdisplayed

PolarityAutomatic(noindicationforpositivepolarity);Minus(‐)signfornegative

polarity.

MeasurementRate3timespersecond,nominal

LowBattery“”isdisplayedifbatteryvoltagedropsbelowoperatingvoltage

BatteriesRequiresone9Vbattery(NEDA1604orequivalent)

Fuses mArange;250mA/250Vfastblow

10Arange,noprotection

OperatingTemp0oCto40oC(32oFto104oF)

StorageTemp‐20oCto60oC(‐4oFto140oF)

MN35-EU-EN V2.3 4/13

RelativeHumidityMaximumrelativehumidity80%fortemperaturesupto31°Cdecreasinglinearly

to50%relativehumidityat40°C.

OperatingAltitude2000meters(7000ft)maximum.

Weight 153g(5.4oz.)

Size 138mmx72mmx38mm(5.43”x2.83”x1.5”)

SafetyForindooruseandinaccordancewithOvervoltageCategoryII,PollutionDegree

2.CategoryIIincludeslocallevel,appliance,portableequipment,etc.,with

transientovervoltageslessthanOvervoltageCategoryIII.

Symbols

AC(voltage)

DC(directcurrentorvoltage)

•))) ContinuityandDiodetest

mV,Vmillivolt,volt(voltage)

kMohm,kilohm,megohm(resistance)

µA,mA,Amicroamp,milliamp,Amp(current)

ºF,ºCDegreesFahrenheit,centigrade(temperature)

ºLowbattery

HOLDDisplayhold



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

ISO‐9001Certified

www.extech.com

.



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