Extech Instruments MF100 User manual

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USERGUIDE

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AC/DCMagneticMeter

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ModelMF100

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EXTECHINSTRUMENTS

2MF100‐en‐GB_V1.79/15

Introduction

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ThankyouforselectingtheExtechInstrumentsModelMF100.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,

andCustomerSupport.

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Features

DCandACmagneticfieldmeasurements

NorthandSouthpoleindication

Automatictemperaturecompensation

ZerobuttonforDC,ACmagneticfunction

Separateprobeforremotemeasurements

Highaccuracy

AdvancedfunctionalitywithprogrammableuserSettings

Idealforavarietyoflaboratoryandfielduses

Heavyduty,compacthousingwithhard‐shellcarryingcase

Autopowerofffeatureconservesbatteryenergy

Easy‐to‐readLCDdisplaywithgreenbacklight

DataHoldandMIN‐MAXRecord‐Recallfeatures

EXTECHINSTRUMENTS

3MF100‐en‐GB_V1.79/15

Safety

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InternationalSafetySymbols

Thissymbolindicatestheusermustrefertothemanualforfurtherinformation.

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Doubleinsulation

SafetyNotes

oRemovethebatteryifthedeviceistobestoredforlongerthan60days.

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

Cautions

oReadandunderstandthisusermanualbeforeoperatingthemeter.

oIftheequipmentisusedinamannernotspecifiedbythemanufacturer,theprotection

providedbytheequipmentmaybeimpaired.

EXTECHINSTRUMENTS

4MF100‐en‐GB_V1.79/15

Description

MeterDescription

1. ProbeConnection

2. LCDDisplay

3. HOLDButton

4. POWERButton

5. RECButton

6. ZEROButton

7. MODEDC/AC/SETButton

8. Tilt‐Standandbatterycompartmentonrear

9. ResetButton

10. DC9VPowerAdapterjack

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ProbeDescription

1. ProbeSensingHead

2. ProbeHandle

3. Probecable

4. ProbeHeadCover

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Fig. 1 – Meter Description

Fig. 2 – Probe Description

EXTECHINSTRUMENTS

5MF100‐en‐GB_V1.79/15

123

DisplayDescription

1. NorthNorSouthSindication

2. Unitofmeasure

(GforGauseormTformilliTesla)

3. ACorDCfieldandresolutioninformation

4. Magneticreading

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ButtonDescription

1. POWERButton:PressandholdtopowerthemeterONorOFF

2. HOLDButton:Shortpresstofreezedisplayedreading(HOLDiconwillappear);another

shortpresstoreturntonormaloperation

3. RECButton:ShortpresstostartrecordingMAXandMINreadings.Additionalshortpresses

willscrollthroughthesavedMAXandMINreadings.Pressandholdtoexitthismode

4. MODEDC/AC/SETButton:Shortpressestoscrollthroughtheavailableunitsofmeasure

andNorth/Southmodes.LongpresstoaccesstheUserSettingsmenu

5. ZEROButton:Shortpresstozerothedisplaybeforetakingareading

ResetButton(rightsideofmeter;notpicturedbelow):Presstorestorethemetertofactory

defaultconditions.Ifthemeterbecomesunresponsiveusetheresetbuttontorestorethe

meter.

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Fig. 3 – Display Description

Fig. 4 – Button Description

EXTECHINSTRUMENTS

6MF100‐en‐GB_V1.79/15

Operation

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AC/DCMagneticFieldMeasurement

PressandholdthePOWERbuttonforatleast2secondstoswitchthemeterON.UsetheMODE

buttontoscrollthroughthefollowingscreensinsequence:

Under mT unit Under G unit

N(S) mT

0.0

0AC

N(S) G

N(S) . mT0

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Eachscreenrepresentstheresolutionfortherespectiveunitofmeasure:

a1screenfor0.1mTDCresolutionmeasurements

b1screenfor0.01mTDCresolutionmeasurements

c1screenfor0.1mTACresolutionmeasurements

d1screenfor0.01mTACresolutionmeasurements

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a2screenfor1GDCresolutionmeasurements

b2screenfor0.1GDCresolutionmeasurements

c2screenfor1GACresolutionmeasurements

d2screenfor0.1GACresolutionmeasurements

Fig. 5 – Programming screens

EXTECHINSTRUMENTS

7MF100‐en‐GB_V1.79/15

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ForDCmagneticfieldmeasurements,thedisplaywillshoweithertheNorSindicator.Forthe

NorthPole,theNindicatorwillbeshown.Similarly,fortheSouthPole,theSindicatorwillbe

shown.ForACmagneticfieldmeasurements,thedisplaywillshowtheACindicator(theNorS

indicatorswillnotthenbeshown).

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Presstheprobeheadtothetestingmaterial(seeFig6).Thedisplaywillshowthemagneticfield

valuealongwiththeunitofmeasure(mT=MilliTeslaorG=Gauss)andAC,ifanACfield.

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Note:WhenthemeterispoweredON,thedisplaymayshowanon‐zerovalue(becauseof

environmentalinterference).BeforetakingameasurementpresstheZERObuttontonullthe

display.

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DataHold

Duringmeasurements,presstheHOLDbuttonandthemeasuredvaluewillbeheld(theLCDwill

displayHOLD).PresstheHOLDbuttonagaintoexitthedataholdfunction.

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DataRecording(MaximumandMinimumReading)

PresstheRECbuttontostartthedatarecordingfunction.TheLCDwilldisplayREC.PresstheREC

buttonagainandRECMAXalongwiththemaximumreadingrecordedwillappearontheLCD.

PresstheRECbuttonagaintodisplaytheminimumvalue(theLCDwilldisplayRECMIN).Toexit

thedatarecordingfunction,pressandholdtheRECbuttonfortwoseconds.Themeterwill

returntothenormalmodeofoperation.

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Note:WhenmakingDCmagneticfieldmeasurementswhiletheRECORDfunctionisactive,the

usercannotchangefromNorthtoSouthpoleorviceversa.

Fig. 6 – Touching Probe to Test Material

EXTECHINSTRUMENTS

8MF100‐en‐GB_V1.79/15

UserSettings

PressandholdtheSETbuttonfortwosecondstoentertheadvancedsettingsmode.Pressthe

SETbuttontocyclethroughthethreemainfunctions:

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POFFAutopowerOFFmanagement

CLrFactory‐onlydiagnosticfunction

UNItSelectthemagneticfieldunits(mTorG)

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Note:After7to10secondsthemeterwillreturntothenormaloperatingmode.

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(POFF)AutoPowerOFF

TheMF100usesanAutoPowerOFFutilitytoswitchthemeteroffautomaticallyinorder

toconservebatteryenergy.Thisfeaturecanbeenabledordisabled:

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IntheAdvancedSettingsmode,whentheLCDdisplaysPOFF,presstheRECbutton

UsetheZeroandModebuttonstoselectYESorNO

SelectingYESenablestheAutoPowerOFFfeature

SelectingNOdisablestheAutoPowerOFFfeature(userwillthenhavetoswitchoff

manually)

PresstheRECbuttontosavethesetting

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(UNiT)SelectingUnitsofMagneticField

IntheUserSettingsmodewhentheLCDdisplaysUNIT,presstheRECbutton

UsetheZEROorMODEbuttontoselectmTorG

SelectmTformilliTeslaunits

SelectGforGaussunits

PressRECtosavetheselection

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Factory‐onlyCLRfunction

WhenintheUserSettingsmode,withCLrdisplayed,pressRECtoskipthisstep.

Thisisafactory‐onlyutility

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ACPowerAdaptor

Thismeterisnormallypoweredbyone9Vbattery;howeveranoptional9Vpoweradaptoris

available.Whentheadaptorisused,themeterispermanentlypoweredandthepowerbuttonis

disabled.

EXTECHINSTRUMENTS

9MF100‐en‐GB_V1.79/15

FactoryDefaultReset

Ifthemeterbecomesinoperative,itcanberesettofactorydefaults.

Openthesidecompartmentand,withthemeteron,presstheresetswitch.

ThemeterwillberesetandtheUserSettingswillbeclearedandresettofactorydefaults.

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BatteryReplacement

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WhenthelowbatteryiconappearsontheLCD,thebatterymustbereplaced.Severalhoursof

accuratereadingsarestillpossibleinthiscondition;howeverbatteriesshouldbereplacedas

soonaspossible:

RemovethePhillipsscrewfromthebatterycompartmentontherearofthemeter.

Removeandsafelyplacethebatterycompartmentandscrewwheretheywillnotbe

damagedorlost.

Replacethe9Vbatteryobservingcorrectpolarity.

ReplacethebatterycompartmentcoverwiththePhillipsscrew.

Note:ThemetercanalsoobtainpowerfromtheDC9VPowerAdapter.Themeterwillbe

permanentlypoweredONwhentheadapterisused(thepowerbuttonisdisabled).

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AllEUusersarelegallyboundbythebatteryordinancetoreturnallusedbatteriestocollection

pointsinthecommunityorwhereverbatteries/accumulatorsaresold!Disposalinthe

householdgarbageisprohibited!

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EXTECHINSTRUMENTS

10MF100‐en‐GB_V1.79/15

Specifications

CircuitCustomone‐chipmicroprocessorLSIcircuit

Display(LCD)Size52x38mm(2.0x1.5in.)

MeasurementUnitsmTMilliTesla

GGauss

MeasurementRange,DCmTRange1300.00mTx0.01mT

Range23,000.0mTx0.1mT

GRange13,000.0Gx0.1G

Range230,000Gx1G

MeasurementRange,ACmTRange1150.00mTx0.01mT

Range21,500.0mTx0.1mT

GRange11,500.0Gx0.1G

Range215,000Gx1G

Accuracy

At23°C+/‐5°C

DC±(5%rdg.+10dgt.)

AC±(5%rdg.+20dgt.)

FrequencyResponseACMeasurement:50Hz/60Hz

SensorHallEffectSensorwithAutoTemperatureCompensation

FieldDirectionUni‐axial

DisplaySamplingTimeApprox.1second

OperatingTemperature0to50°C(32to122°F)

OperatingHumidityLessthan85%R.H.

PowerSupply9VBattery

UniversalACadaptorsincluded

PowerConsumptionApproximately15mADC

Weight(meterandprobe)275g(9.7oz.)

DimensionsMainInstrument:198x68x30mm(7.8x2.67x1.18in.)

Probe:195x25x19mm(7.68x0.98x0.75in.)





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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  

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