The Sonel MRU-30 uses most known methods of earth resistance measurements. Tests can be performed using the 3-pole, 4-pole, 3-pole with auxiliary clamp and also, additionally, the MRU-30 employs the two clamp method of measurement, without the use of auxiliary test rods which can't be used in some situations. Complementary features of the MRU-30 are measurements of soil resistivity, continuity measurement of protective and equipotential conductors and, using clamps, leakage currents and interference voltages.
Features of Sonel MRU-30 Earth Resistance Tester:
- Robust and weatherproof (IP65) - protection against ingress of dust and water
- Ergonomic casing - small, light-weight, convenient for carrying and field work
- Built-in rechargeable battery - can be recharged from an outlet or 12V Car socket
- Clear on-screen display to view results
- Safety - alerts user of possible dangers and irregularities before and after the measurement
- User can use choose between measurement methods
- Test leads. test electrodes, and power adapter are included.
- Earth resistance measurement with 3-pole, 4-pole method.
- Selective earth resistance measurement with clamp (no influence from parallel earths;
- no opening of rusty junctions is needed)
- Continuity of equipotential bondings and protecting conductors.
- Two clamps earth resistance measurement without auxiliary test probes.
- Earth resistivity measurement.Document:Sonel MRU-30 Earth Resistance Tester
Specifications of Sonel MRU-30 Earth Resistance Tester:
Operation Temperature | -10...+55°C, |
LCD Display | segment, backlit, |
Continuity | Range: 0,00...9,99 Ω / 100...1999 Ω Resolution: 0,01 Ω / 1 Ω Accuracy: ±(2% m.v. + 3 digits) |
Storage temperature | -20...+80°C, |
Dimensions | 200x150x74 mm. |
Earthing Resistance | Range: 0,00...19,99 Ω / 2000...9999 Ω Resolution: 0,01 Ω / 1 Ω Accuracy: ±(3% m.v. + 3 digits) / ±8% m.v. |
Humidity | 20...90%, |
interference voltage | Range: 0...100 V Resolution: 1 V Accuracy: ±(10% m.v. + 1 digit) |