The MRU-105 and MRU-106 (for 60 Hz) are portable meters for the earth resistance and earth resistivity measurement (Wenners method). The instruments can measure resistance using 2, 3, or 4 poles method. Measurements can be simplified using current clamps. The very high immunity for existing interference voltage AC + DC at which measurement is still performed: 24 V (68 V-p-p) but also measurement of existing interference voltage up to 40 V is unique functionality of the meters. Moreover meters measure the resistance of the probes and calculate automatically the error coming from probe's resistances. The meters MRU-105 and MRU-106 (for 60 Hz) additionaly can be powered from Ni-MH batteries or standard C size, and the test results can be stored in the internal memory and transmited to PC via USB - cable

The MRU-105 and MRU-106 (for 60 Hz) are portable meters for the earth resistance and earth resistivity measurement (Wenners method). The instruments can measure resistance using 2, 3, or 4 poles method. Measurements can be simplified using current clamps. The very high immunity for existing interference voltage AC + DC at which measurement is still performed: 24 V (68 V-p-p) but also measurement of existing interference voltage up to 40 V is unique functionality of the meters. Moreover meters measure the resistance of the probes and calculate automatically the error coming from probe's resistances. The meters MRU-105 and MRU-106 (for 60 Hz) additionaly can be powered from Ni-MH batteries or standard C size, and the test results can be stored in the internal memory and transmited to PC via USB - cable