The Sonel MRU-30 earth resistance meter has both 3-pole, 4-pole methods. The selective earth resistance measurement can be made with clamp so no influence from parallel earths and no opening of rusty junctions is needed.
Sonel MRU-30
Description
Possible measurements:
- 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.
