Earth Testing Kit · Test & Measurement
ERT-50R
Professional earth tester with 2/3/4-wire, selection and double-clamp methods — plus soil resistivity, earth voltage and ground current. IP65 kit, large backlit LCD, AFC and 2000-set memory.
2/3/4-wire + selection
Double clamp method
Soil resistivity (Wenner)
Earth voltage 0–100 V AC
Leakage/ground current
AFC 128/111/105/94 Hz
2000-set memory + RS232
7.4 V Li-ion, IP65 kit
Key features
Comprehensive methods
2/3/4‑wire, selection and double‑clamp methods for complex grounding systems.
Soil resistivity
4‑pole Wenner method for planning and verification.
Earth voltage & ground current
0–100 V AC and 0.0 mA – 600 A via clamp; AFC stabilises readings.
Large backlit LCD
Clear outdoors; indicators for interference, overflow and wiring.
Memory & connectivity
Store 2000 sets, hold/readback, and upload via RS232 software.
Rugged IP65 kit
Water/dust‑protected case; 7.4 V 2600 mAh Li‑ion power.
Ranges & key specifications
| Function | Range | Resolution | Accuracy | Notes |
|---|---|---|---|---|
| Earth resistance | 0.00 Ω – 30.00 kΩ | 0.01 Ω | — | 2/3/4‑wire, selection; test current up to 20 mA |
| Soil resistivity | 0.00 Ω·m – 9000 kΩ·m | — | — | Wenner 4‑pole |
| Earth voltage | 0 – 100 V AC | 0.1 V | ±(2% rdg + 3 dgt) | Between P(S) – ES |
| Ground current | 0.0 mA – 600.0 A | 0.0 mA | ±(2% rdg + 3 dgt) | Via clamp (double‑clamp method supported) |
| AFC test freq. | 128 / 111 / 105 / 94 Hz (auto‑select) | |||
| Memory | 2000 sets; Hold/Read; RS232 upload | |||
| Power | 7.4 V 2600 mAh Li‑ion (rechargeable) | |||
See datasheet for detailed ranges, conditions and accessory options.
Where the ERT‑50R Excels
Utilities & substations
Ground grid verification, maintenance testing and documentation.
Construction & lightning protection
Commissioning earthing systems; periodic compliance checks.
Telecoms / oil & gas
Site surveys, troubleshooting high‑impedance paths and bonding.
Facilities maintenance
Routine verification of building and plant earthing.
Accessories
Included accessories
- Auxiliary earthing rods — 4 pcs (Ø10 × 150 mm)
- Standard testing wires — 4 pcs (Red 20 m, Black 20 m, Yellow 10 m, Green 10 m)
- Simple testing wires — 2 pcs (Red 1.6 m, Black 1.6 m)
- RS232 cable & PC software
- Carrying case (IP65 protection)
- Rechargeable Li‑ion battery pack
Safety & Compliance
IEC
Designed, manufactured and tested according to IEC 61010‑1
CAT
Measurement Category CAT III 300 V / CAT IV 150 V
EMC
IEC 61326
61557
IEC 61557‑1 (Earth Resistance), IEC 61557‑5 (Soil Resistivity)
Downloads
Datasheet (PDF)
Software
Coming soon
Connection diagrams — 2 / 3 / 4‑wire
2‑wire (simplified)
Use when a quick check is sufficient and conditions are suitable.
3‑wire (precise)
Standard method for commissioning and verification.
4‑wire (guarded)
Use guarding where surface leakage affects measurements.
Have questions or need pricing?
Request a quote