| Impact | Benchmark condition | Working conditions | Note |
| Auxiliary grounding resistance value | <100Ω | <100kΩ | rC, rP |
| Electrode distance when measuring R | a> 5d | a> 5d | ---- |
| Electrode distance when measuring ρ | a>20h | a>20h | ---- |
| Ambient temperature | 23℃±1℃ | -10℃~40℃ | ---- |
| Environment wet crossing | 40% ~ 60% | <80% | ---- |
| Function | Two, three or four wires measure ground resistance and soil resistivity;Ground voltage, AC voltage measurement |
| Power supply | DC 8.4V (2 rechargeable lithium batteries) |
| Range | Ground resistance: 0.00Ω~100.0kΩ |
| Soil resistivity: 0.00Ωm ~ 1kΩm (then multiplied by the coefficient 2πa) | |
| Measurement method | Precision 4-wire, 3-wire measurement, simple 2-wire measurement of ground resistance |
| Short-circuit test current | AC ± 20mA max |
| Open circuit test voltage | AC ± 20V max |
| Test voltage waveform | square wave (1KHz) |
| Electrode pitch range | can be set from 1m to 10m |
| Standard test line | 4 strips: 2 strips of 20m length, 2 strips of 10m length |
| Simple test lead | 2 strips: 1.0m yellow, 1 each green 1.0m |
| Auxiliary ground rod | 4 pieces:φ10mm×150mm |
| Line voltage | AC 600V or less |
| USB interface | With USB interface, software real-time monitoring, stored data can be uploaded to the computer, save and print, soil layer analysis and other functions |
| Communication line | 1 USB cable, 1.5m long |
| Auxiliary ground test | With auxiliary ground resistance value test function, but must meet R + rC<50kΩ, R + rP <50kΩ R is the measured ground resistance |
| Working temperature and humidity | -10℃~40℃; |
| Storage temperature and humidity | -20℃~60℃; |
| Measurement function | Measuring range | Precision | Resolution |
| Ground resistance(R) | 0.200Ω~2.000Ω | ±5%rdg±5dgt | 0.001Ω |
| 02.00Ω~20.00Ω | ±2%rdg±3dgt | 0.01Ω | |
| 020.0Ω~200.0Ω | ±2%rdg±3dgt | 0.1Ω | |
| 0200Ω~2000Ω | ±2%rdg±3dgt | 1Ω | |
| 02.00kΩ~20.00kΩ | ±5%rdg±5dgt | 10Ω | |
| Soil resistivity(ρ) | depends on the measurement range of R (ρ=2πa(R÷100) a:1 m~100m;π=3.14) (ρmin = 1.256Ωm , ρmax = 125.6KΩm ) | ||
| Ground voltage | AC 0.0~600V | ±2%rdg±3dgt | 0.1V |
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