Earth Resistance Meter-MRU 30
The Sonel MRU-30 compact earth resistance and soil resistivity meter enables efficient and easy earth resistance measurement. Many measurement methods available in a small casing.
The MRU-30 meter is surprisingly versatile in nature. The instrument can be used to perform single earthing measurements as well as multiple earthing measurements using additional clamps or electrodes. Additional capabilities of this handy device include measurement of soil resistivity using the Winner method, as well as verification of the continuity of equalizing connections and protective conductors. Another advantage of the Earth Resistance and Resistivity Meter- Sonel MRU-30 meter is the clear transmission of information alerting the user to possible dangers or detected irregularities. Information appears on the screen both before and after the test.
Measurement methods
- 3-pole and 4-wire method – measurement of earthing systems using auxiliary probes
- 3-pole method with clamp – measurement of earthing systems with multiple earth electrodes
- Two-clamp method – measurement of earthing system when the auxiliary probes cannot be used
- Earth resistivity – Wenner method
- Resistance of earth connection and equipotential bonding measured using current ≥200 mA with auto-zero function – meets the requirements of EN 61557-4
Application
The MRU-30 earth resistance meter is designed to measure single and multiple earthings using auxiliary electrodes and/or clamps. Moreover it is possible to measure ground resistivity (Wenner method) and verify the continuity of equipotential bondings and protective conductors.
Capabilities
The meter provides the ability to make grounding tests with all kinds of the technical method. High immunity to interference allows it to be used even in difficult conditions in circuits with interfering currents. Simple and intuitive operation makes the measurements easier and faster. The meter has internal memory. The measurement results can be transmitted to a computer for data processing and preparation of documentation from the grounding tests.
