| Measurement Functions |
Earth resistance (2‑wire / 3‑wire / 4‑wire); soil resistivity |
| Earth Resistance Ranges |
4 Ω, 40 Ω, 400 Ω, 4 kΩ, 40 kΩ |
| Soil Resistivity Ranges |
4 Ω to 40 kΩ (computed from Earth resistance and spacing) |
| Accuracy (Earth Resistance) |
±(3% + 15 digits) at 2 Ω; ±(3% + 5 digits) at higher ranges |
| Accuracy (Soil Resistivity) |
±(3% + 5 digits) |
| Disturbance Voltage Range |
Up to 50 V AC/DC (40 Hz–500 Hz); accuracy ±(3% + 3 digits) |
| Disturbance Frequency Range |
40 Hz – 500 Hz; accuracy ±(1% + 2 digits) |
| Test Signal Frequencies |
94 Hz or 128 Hz selectable |
| Soil Resistivity Test Distance |
1 m to 40 m |
| Auxiliary Resistance (RK) Test |
Supported |
| Auxiliary Grounding (RH/RS) |
Yes, measured to support accuracy compensations |
| Display |
LCD with backlight |
| Data Storage |
Up to 20 test results (recallable) |
| Data Hold |
Yes |
| Low‑Battery Indicator |
Alerts when battery voltage ≤ 9.5 V |
| Auto Power‑Off |
Yes (after ≈ 5 minutes idle) |
| Safety Rating |
CAT III 300 V; double insulation (EN 61010‑1, 61010‑2‑033, 61010‑031) |
| Power Supply |
8 × AA (1.5 V) batteries |
| Overload Protection |
AC 220 V between terminals for up to 10 s |
| Insulation Resistance |
> 50 MΩ (1000 V to housing) |
| Withstand Voltage |
AC 3540 V for 5 s between circuit and housing |
| Sampling Interval |
Approx. 5 seconds |
| Display Size |
~125 × 37 mm (LCD module) |
| Weight (net) |
Approx. 1.1 kg (without batteries) |
| Dimensions |
210 × 175 × 90 mm |
| Operating Temperature |
0 °C to +40 °C; humidity < 80% RH (< 75% during storage) |
| Included Accessories |
Eight AA batteries, standard and simple leads with alligator clips, four earth spikes, carry case, user manual |
