2
Digital Ground Resistance Tester Model 3640 and 4610
4.2 GroundResistanceValues .....................................................21
4.3 GroundResistanceTestingPrinciple .....................................23
4.3.1 PositionofAuxiliaryElectrodesinMeasurements ......24
4.4 MeasuringResistanceofGroundElectrodes (62%Method) ..25
4.4.1 AuxiliaryElectrodeSpacing ........................................27
4.5 GroundResistanceMeasurementProcedure (3-Point) ..........28
4.6 MultipleElectrodeSystem ......................................................29
4.7 2-PointMeasurement(SimpliedMeasurement) ............. 31
4.8 ContinuityMeasurement .........................................................32
4.9 SoilResistivityMeasurements(Model4610Only) .................33
4.10SoilResistivityMeasurementProcedure(4-Point) .................34
4.11 HowtoUse25ΩCalibrationChecker .....................................36
5. MAINTENANCE ............................................................................. 37
5.1 Warning...................................................................................37
5.2 Cleaning ..................................................................................37
5.3 ReplacingtheBattery .............................................................37
5.4 ReplacingtheSafetyFuse ......................................................38
RepairandCalibration ...........................................................................39
TechnicalandSalesAssistance ............................................................39
Limited Warranty ...................................................................................40
WarrantyRepairs ...................................................................................40
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