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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 app ear 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.

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Fig. 6 – Touching Probe to Test Material

Extech Instruments MF100 User Manual

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