Feature:1. Equipped with a large LCD display with blue backlight and bar graph, the readings are more clear and accurate.2. Using the latest digital and microprocessing technology, accurate 4pole, 3pole and simple 2pole methods for grounding resistance measurement, FFT and AFC technology introduced.3. With USB interface, support data upload function and alarm function, data storage up to 300 groups, easy to detect.4. Unique antiinterference ability and adaptability to environment, the consistency of repeated tests, to sure the high accuracy and high stability of longterm measurement.5. Widely used in electricity, telecommunications, meteorology, oil fields, construction, industrial electrical equipment and other grounding, soil resistivity, ground voltage, AC voltage measurement.Specification:Condition: Brand NewItem Type: Earth Resistance TesterMaterial: ABSBasic Conditions and Working ConditionsInfluenceBasic ConditionsWorking EnvironmentNoteAmbient Temperature231-10-40Environment Humidity40%-60%80%Operating Voltage9V0.1V9V1.5VrC, rPAuxiliary Ground Resistance10030kInterference VoltageNo20VInterference CurrentNo2AElectrode Distance When Measuring RA>5dA>5dElectrode Distance When Measuring A>20hA> 20 HFeaturesMeasure 2/3/4 Pole Grounding Resistance, Soil Resistivity, Grounding Voltage, AC VoltagePower SupplyDC 9V (Zi-Mn dry battery R14S 1.5V 6 PCS, 300 hours of continuous standby) (Battery Not Included)Measuring RangeGrounding Resistance: 0.00-30.00kSoil Resistivity: 0.00m-9000kmMeasurement MethodAccurate 4-Pole Measurement, 3-Pole Measurement, Simple 2-Pole MeasurementMeasurement MethodsGrounding Resistance: Rated Current Pole Changing Method, Measuring Current Maximum 20mASoil Resistivity: 4-Pole Measurement (Winner Method)Ground Voltage: Average Rectification (Between P(S)-ES)Measuring Frequency128Hz / 111Hz / 105Hz / 94Hz (AFC)Short Circuit Test CurrentAC Maximum 20mAOpen Circuit Test CurrentAC 40V or LessTest Voltage WavesSine WavesElectrode Distance RangeCan be set from 1m-100mTransferGrounding Resistance: 0.00-30.00k, automatic shiftSoil Resistivity: 0.00m-9000km, Automatic ShiftBacklightBlue screen backlight, suitable for dim placesDisplay Mode4-digit large lcd display with blue screen backlightMeasurement StandardDuring the measurement, LED flashes indicator, LCD countdown display, progress bar indicatorLCD Frame SizeApprox. 128x75mm / 5.0x3.0inLCD Window SizeApprox. 124x67mm / 4.9x2.6inSizeApprox. 215x170x75mm / 8.5x6.7x3.0inStandard Test Line4 Lines: each red 20m, black 20m, yellow 10m and green 10mSimple Test Line2 Lines: red 1.6m and black 1.6mAuxiliary Earth Rod4 Rods: 10x150mm / 0.4x5.9inMeasurement RateGround voltage: about 3 times/secGrounding Resistance, Soil Resistivity: About 5 Seconds/TimeMeasure TimeMore than 5000 times (short circuit test, the interval time should be at least 30 seconds)Line VoltageBelow AC 600VRS232 InterfaceWith RS232 interface, software monitoring, stored data can be uploaded to the computer, saved or printed.Communication LineOne RS232 communication line, length 1.5mData Storage300 sets, "MEM" icon storage indicator, flashing "FULL" icon indicates that the storage is fullData RetentionData retention function: "Hold" icon displayData AccessData reading function: "READ" icon displayOverflow DisplayOver-range overflow function: "OL" icon displayInterference TestAutomatically identify interference signals, and display "NOISE" icon when the interference voltage exceeds 5VAuxiliary Ground TestCan measure auxiliary grounding resistance, 0.00K-30k (100R + rC <50k, 100R + rP <50k)Alarm FunctionWhen the measured value exceeds the alarm setting value, there will be a "Toot-toot-toot" alarm promptBattery VoltageWhen the battery voltage drops to about 7.5V, a low battery voltage icon will be displayed to remind you to replace the battery.Energy ConsumptionStandby: about 20mA (backlight off)Power on with Backlight: About 45mA (25mA without backlight)Measurement: About 100mA (backlight off)Working Temperature and Humidity-10-40, lower than 80% rhStorage Temperature and Humidity -20-60, less than 70% rhOverload ProtectionMeasure grounding resistance: between each interface of C(H)-E, P(S)-ES, AC 280V / 3 secondsInsulation ResistanceMore than 20M (500V between circuit and case)Withstand VoltageAC 3700V/rms (between the circuit and the case)Electromagnetic PropertiesIEC61326 (EMC)Protection TypeIEC61010-1 (CAT III 300V, CAT IV 150V, Pollution 2), IEC61010-031, IEC61557-1 (ground resistance), IEC61557-5 (soil resistivity), JJG 366-2004CategoryMeasuring rangeInherent ErrorResolutionGround Resistance (R)0.00-30.00 2% rdg3dgt 0.0130.0-300.0 2% Rdg3dgt 0.1300-3000 2% Rdg3dgt 13.00k-30.00k 4% Rdg3dgt 10Soil Resistivity ()0.00m-99.99mAccording to Accuracy of R(=2aRa: 1 m-100m, = 3.14)0.01m100.0m-999.9m0.1m1000m-9999m1m10.00km-99.99km10m100.0km-999.9km100m1000km-9000km1kmGround VoltageAC 0.0-600V2%rdg3dgt0.1V.Package List:1 x Earth Resistance Tester (Battery Not Included