Digital Ground Resistance / Soil Resistivity Meter

Specifications 1, conditions of use Ambient temperature: 0 ℃ ~ +45 ℃ Relative humidity: ≤ 85% RH Resistance: 0 ~ 20Ω (10mA) 20 ~ 200Ω (1mA) 200 ~ 2000Ω (1mA) Voltage: AC 0 ~ 20V 3, measurement accuracy and resolution Accuracy: 0 ~ 0.2Ω ≤ ± 3% ± 1d 0.2Ω ~ 2000Ω ≤ ± 1.5% ± 1d 1 ~ 20V ≤ ± 3% ± 1d Resolution: 0.01Ω, 0.1Ω, 1Ω, 0.01V 4, auxiliary earth resistance and ground voltage measurement errors caused by ?

Allow auxiliary earth resistance RC (C1 and C2 between) 0 ~ 20Ω ≤ 1KΩ 20 ~ 2000Ω ≤ 2KΩ RP (P1 and P2 between) <40KΩ error ≤ ± 5% ? Allowed to voltage (frequency rms) ≤ 5V error ≤ ± 5% 5, power supply and power consumption ≤ 2W maximum power dissipation AC: 220V/50Hz 6. Size and weight Size: 220mm × 200mm × 105mm Weight: ≤ 1.4kg Western Group