Extech Instruments MF100

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