Earth Resistivity Meter

• earth resistance measurement with 2-pole,3-pole,4-pole method,

• Selective earth resistance measurement with clamp,(no influence from parallel earths; no opening of rusty junctions is needed),

• impulse earth resistance measurement, three kinds of measuring impulse 4/10microsec, 8/20 microsecond, 10/350 microsecond

• Two clamp earth resistance measurement without auxiliary test problems,

• earth resistivity measurement,

• leakage current measurement,

• earthing resistance using auxiliary electrodes,

• earthing resistance using auxiliary electrodes and clamp(for measurements of multiple earthing)

• earthing resistance using double clamps(for measurement of earthing when it is impossible to use auxiliary electrodes)

• impulse earth resistance(without disconnecting measured earthing),

• ground resistivity(Wenner method)

• current using the clamp(e.g. leakage) and flexible clamp(Rogowsky coil),

• measurement of continuity of equipotential bondings and protective conductors with auto-zero function-with current 200mA.

• measurement of resistance of auxillary electrodes R_S and R_H,

• measurement of interference voltage,

• measurement of interference frequency,

• measurement in the presence of interference voltage in the power network with frequency 16 2/3 Hz, 50 Hz, 60Hz and 400Hz,

• selection of maximum measuring voltage(25V and 50V)

• introducing the distance between the electrodes for the resistivity in metres(m) and feet(ft),

• memory of 990 measurements(10 banks of 99 cells each)

• Calibration of clamp used,

• real time clock (RTC)

• Data transmission to the computer (USB)

• indication of battery state.

Other Models are:

• MRU 120

• MRU 105//106

• MRU 21

• MRU 20.