China Digital Ground Resistance Meter Earth Resistance Tester Soil Resistivity Tester

EPER24C
Earth Resistance Tester
General Information:
Earth Resistance/Soil Resistivity Tester is specially designed and manufactured for ground resistance, the testing current reaches 20mA. The digital and micro-processing technology, precision 3-wire method and simple 2-wire method are used to measure ground resistance, importing FFT (Fast Fourier Transform) technology, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth resistance, earth voltage measurement.
Also called: Precision Ground Resistance tester
Four-wire Ground Resistance Tester
Two/three/four wire ground resistance tester
Soil resistivity tester
Features: Large LCD display with backlight and bar graph indication. Can store 2000 sets of data.Historical data reading, viewing, saving, reporting, printing.
Specification:

FunctionGround resistance, soil resistivity test; ground voltage, AC voltage test. PowerDC 7.4V 1.8Ah rechargeable Li-battery, battery full charge time 8h.Back lightControllable white screen backlight, suitable for use in dark field.Testing methodPrecision four wire, three wire method and simple two wire method to test grounding resistanceMeasure methodEarth Resistance: rated current change-pole method, measuring current 20mA max.
Soil resistivity: four-pole method (Winner method)Earth Voltage: average rectification (between P(S)-ES)Range2/3/4 wire method for measuring ground resistance (R):0.00Ω~3000Ω Soil Resistivity(ρ):0.00Ωm~9000kΩmGrounding voltage:AC 1~100.0VMax. resolution0.01Ω; 1V
Accuracy
2/3/4 wire method for measuring ground resistance (R):
±2%rdg±0.05Ω(0.000Ω~29.999Ω)
±2%rdg±3dgt (30.00Ω~2999.9Ω)
±4%rdg±3dgt (3000Ω~30000Ω)Soil Resistivity(ρ):depending to the measuring precision of R
(ρ=2πaR a:1 m~100m;π=3.14)Grounding voltage: ±2%rdg±3dgtNote:
1. The Additional error at rC maxor rP max≤±5%rdg±5dgt.b
(rC max:4kΩ+100R<50kΩ, rP max:4kΩ+100R<50kΩ)
2. 5V The Additional error at interference voltage ≤±5%rdg±5dgt.Testing voltage wave shapesine waveTesting frequency128Hz/111Hz/105Hz/94Hz (auto select frequency)Short circuit test currentAC 20mA maxOpen circuit test voltageAC 40V maxElectrode distance range1m~100mSwitchGround resistance: 0.000Ω~30000Ω auto switchSoil resistivity: 0.00Ωm~9000kΩm auto switchLCD6" LCD display, white screen backlightLCD size128mmx75mmLCD display size124mmx67mmTesting indicationLED flashing indication in measurement. LCD count down. Progress bar chart indicationSizeHost machine:Length Width Height 320mmx275mmx145mmOuter size:Length Width Height 400mmx245mmx335mm Standard test wireTotal 4pcs:red wire 15m,black wire 15m, yellow wire 10m,green wire 5m, each 1pcs Simple test wireTotal 2pcs:red wire 1.6m,black wire 1.6m each 1pcsAuxiliary grounding rod4 pcs:φ10mmx150mmTest timeGround voltage: approx 2times/sec
Ground resistance:approx 5sec/time
Soil Resistivity: approx 5sec/timeTest times5000times above (short circuit test, test 1 time, Stop for 30 seconds and retest. ) Circuit voltageBelow AC 600V Communication portWith RS232 interface, storage data can be uploaded to the computer and saved to print.communication wireRS232 communication wire 1pcs, length 1.5mData HOLDThe "HOLD" symbol indicates data is kept.Data save2000 SET,"MEM"Storage instructions,display "FULL"Indicates that the storage is full.Data readthe "READ" symbol indicates look up data Overflow displayExceeding measuring range overflow function: "OL" icon displayInterface testRecognize interference signal automatically, "NOISE" icon display when interference voltage exceed 5V Alarm functionWhen measuring value exceeds alarm setting value, there is "Toot-toot-toot" alarm hintBattery voltageWhen low battery, battery voltage low icon will display, reminding to charging battery.Working currentStandby: about 25mA (Backlight shut off);
backlight:25mA Max(only backlight consumption);
Measurement: about 150mA (Backlight shut off)WeightHost machine:2.66kg(with battery)Total weight:6.88kg(with package)Tool boxThe military toolbox is designed to support pressure 200kg.Working humiture-10ºC~40ºC, 80%rh belowStorage humiture-20ºC~60ºC, 70%rh belowOverload protection Measure ground resistance :C(H)-E,P(S)-ES between each port AC 280V/3secInsulation resistance20MΩ above(between circuit and shell 500V)Withstand voltageAC 3700V/rms(between circuit and shell)Electromagnetic featuresIEC61326(EMC)Comply standardIEC61010-1(CAT III 300V, CAT IV 150V, pollution class2)
IEC61010-031, IEC61557-1(ground resistance)
IEC61557-5(soil resistivity)