Sonel MRU-200-GPS

The Sonel MRU-200-GPS is a multifunctional, versatile meter for performing earth resistance and soil resistivity measurements. The device allows you to use all known methods of earth resistance measurement, and it definitely stands out from other devices of its kind. It allows you to perform tests with the 3-pole and 4-wire method, using additional clamps (multiple earthing), as well as the two-clamp method and impulse method (earth impedance measurement).
The two-core method can be used to perform earth resistance measurements without the need for auxiliary probes, which are driven into the ground. The impact method is used for diagnosing lightning protection earthing, but can also be used to measure extensive, multiple and connected earthing (including underground) without interfering with the circuit. With the use of the impact method it is possible to carry out measurements in accordance with EN 62305—the need to measure earth impedance. The instrument also has a built-in GPS receiver, which allows for recording the result along with coordinates from where it was taken. An additional function of the meter is the possibility of measuring soil resistivity, continuity of protective and equalising connections, and with clamps, even leakage or fault currents. The high class of the device is confirmed by the excellent accuracy of the result it produces. The meter makes measurements in accordance with the EN 61557 standard starting from 0.100 Ω.