User manual

EMF450-en-GB_V1.1 8/15
7
LowFrequencyEMFReadings(Magneticfield)
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Pointthefrontsectionofthemetertowardthedesiredelectromagneticfieldtotakea
measurement.Themetersimultaneouslydisplaystheelectromagneticfieldreadingsof
individual(XYZ)andtheaggregatedMagneticfieldreadings.
Theaggregatedcalculationequationisexpressedas:
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Duetoenvironmentrelatedmagneticfieldfactors,thiselectromagneticfield(EMF)meter
maydisplayareadingofunder0.50mGpriortotesting.Thisiscausedbythemagneticnoise
intheenvironment,ratherthanmeterfailure.
TheMagneticandElectricfieldwillalsodisplayawarningindicator(Good/Normal/Warning).
Important:If
thesensorismovedquickly,excessivefieldstrengthvalueswillbedisplayed
whichdonotreflecttheactualfieldconditions.Thiseffectiscausedbyelectrostaticcharges.
Measurementconsiderations:
1. Holdthemeteratarm’slength.
2. Pointthefrontfaceofthemetertowardthesourceofpower.
3. Hold
themetersteadyduringthemeasurement.
4. Makeseveralmeasurementsatvariouslocationsintheworkplaceorotherareasof
interest.Thisisparticularlyimportantifthefieldconditionsareunknown.
5. Payspecialattentiontomeasuringtheneighboringvicinityforpossibleradiationsources.
Apart from active sources, those
components connected to a source may also act as
radiators.
Forexample,thecablesusedindiathermyequipmentmayalsoradiateelectromag n e tic
energy.
Note that metallicobjectswithin the fieldmay locally concentrateor amplify the field
fromadistan t source.
RFstrengthmeterreadings
PointthefrontfaceofthemetertowardthedesiredRFfieldtotakeameasurement.
TheRFsignalstrengthwillbedisplayedwiththeunitsofmeasuresetfromthemenumode.
TheRFstrengthportionofthedisplaywillalsoshowaRFstrengthhistoryhistogramanda
warning
indicator(Good/Normal/Warning)basedonthemeasuredvalue.
Measurementconsiderations:
1. Holdthemeteratarm’slength.
2. Pointthefrontfaceofthemetertowardthesourceofpower.
3. Holdthemetersteadyduringthemeasurement.
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