Humboldt H-4385 Resistivity Meter Bedienungsanleitung

product manual11.10 H-4385Resistivity Meter

4) Insert4newC-sizealkalinebatteriesintoeachholdertubeandreinstallthetubesmakingsurethatthebatterypolarityiscorrect(aslabeled

www.humboldtmfg.comHUMBOLDTTesting Equipment forConstruction MaterialsHumboldt Mfg. Co.875 Tollgate RoadElgin, Illinois 60123 U.S.A.U.S.A.TollFree:

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DescriptionWhen combined with appropriate electrodes (pins) and test leads, the H-4385 can be used to measure earth resistance or the resistance-to-ea

2) Whentheapproximateresistance(sayofthelocalsoil)isnotknown,movetherangeselectorswitch(labeled“OhmsMultiplyBy”)tothe100Ksett

So,forexample,iftheH-4385producesaresistancevalueof15ohmsforanelectrode(pin)spacingof20feet,theearth’saverageresistivityvalue

2. Soil Sample (or Liquid) Resistivity MeasurementThisapplicationalsouses4electrodes,however,inthiscase,theelectrodesareanintegralpart

3-Electrode ApplicationThe3-ElectrodeApplicationcanbeusedtomeasuretheresistance-to-earthofaburiedelectrode, such as a buried ground rod o

Thistypeofplotassumesthatthe“CurrentElectrode”(seeFigure3)ispositionedfarenoughawayfromtheelectrodeundertestsothata“plateau”

AsindicatedinFigure5,inthisconguration,jumperwiresareconnectedbetweenterminalsC1andP1andbetweenterminalsC2andP2.Inaddition,t