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The Sonel MRU-200-GPS is one of the unique meters on the market which uses all the measurement methods such as the 2-pole, 3-pole,4-pole method. Selective earth resistance measurement with clamp is also possible along with BS:EN62305 Lightning Impulse earth resistance measurement with three kinds of measuring impulse 4/10μs, 8/20μs, 10/350μs. The meter also has built in GPS with the coordinates of the measurement are stored in meter memory.
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The Sonel MRU-200 is able to make all the measurement methods such as the 2-pole, 3-pole,4-pole method. It is also possible along with BS:EN62305 Lightning Impulse earth resistance measurement with three kinds of measuring impulse 4/10μs, 8/20μs, 10/350μs. Measurement with clamps for selective earth resistance measurement can also be easily made.
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The Sonel MRU-120 is able to make the following measurements. Earth resistance measurement with 3-pole,4-pole method. Selective earth resistance measurement with clamp. Continuity of equipotential bondings and protecting conductors. Two clamps earth resistance measurement without auxiliary test probes. Earth resistivity measurement.
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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.
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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.
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The Sonel MRU-21 is a 3-pole earth resistance meter capable of the measurement of continuity of equipotential bondings and protective conductors with auto-zero function – with a test current of 200mA. Resistance measurement is also possible using the 2-pole method.
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Insulation resistance measurement of 5kV with a resistance range of up to 15T Ohm in Accordance with IEC 61557-2. The test voltages can be programmed at 50V…1000 V at 10 V and 1000V...5000 V at 25 V resolution. During tests the meter can give a continuous indication of measured insulation resistance or leakage current along with acoustic signaling of 5 seconds intervals to facilitate capturing time characteristics.. Automatic discharge of measured object capacitance voltage after the end of insulation resistance measurement.
