User manual

EXTECHINSTRUMENTS
7MF100‐en‐GB_V1.87/16
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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(M aximum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.
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Fig. 6 – Touching Probe to Test Material