Category: Earth Ground Resistance Meters

Earth Ground Resistance Meters

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    Earth Resistance Meter MRU-10


    Safety Rating Cat IV at 150V labelIngress protection IP67 label

    Overview of MRU-10 Earth Resistance Meter

    The Sonel MRU-10 is a simple meter that allows you to measure earthing resistance using a technical method as well as measure grounding resistance using the pole method. The instruments is easy to handle, resistive to interference, and highly accurate. This unit allows checking the quality of the grounding system on the basics of the received measurement result. The device is simple to operate and intuitive and an excellent choice for electrical  technicians, installations contractors and professionals dealing with grounding measurements. This Earth Resistance meter is durable with firm housing, as well as big and clear display with ergonomic design makes this instrument ideal to use both in the field and most working environments.

    Earth Resistance Meter features

    • measure earthing resistance using auxiliary electrodes method 2-pole and 3-pole
    • measurement of resistance of auxiliary electrodes RS and RH,
    • measurement in the presence of interference voltage in the power network with frequency 50 Hz and 60 Hz,
    • selection of maximum measuring voltage (25 V and 50 V),
    • measurement category: CAT IV 150 V acc. to EN 61010-1,
    • protection class acc. to EN 60529: IP67.
    • indication of battery state.
    • LCD display: segment, backlit,
    • number of measurements (RE3P) carried out of set of batteries: > 3000


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    Earth Resistance Meter | MRU-200 GPS

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    Safety Rating Cat IV at 300V label Safety Rating Cat III at 600V label Bluetooth Enabled label GPS

    Overview of  MRU-200 Earth Resistance meter

    The MRU-200 earth resistance meter is a unique meter in the market, which uses all measurement methods to get earth resistance.  Making sure the ground system has a low earth ground resistance when initially installed is a very important safety check, but making sure the  low resistance is maintain is just as important. Resistance of grounding system might increase when the ground rods are corroded. Over time soil with high moisture, salt content and high temperatures will corrode connections.  It is therefor recommended that the earthing be checked periodically to make sure there is not an big increase in resistance.

    Earth Resistance Meter Features:

    • earth resistance measurement with 2-pole, 3-pole,4-pole method,
    • two clamps earth resistance measurement without auxiliary test probes,
    • impulse earth impedance measurement, three kinds of measuring impulse 4/10μs, 8/20μs, 10/350μs,
    • earth resistance measurement without disconnecting measured earths (using clamp),
    • earth resistivity measurement,
    • continuity measurement,
    • leakage current measurement.
    • optional built in GPS,
    • GPS coordinates of the measurement are stored in meter memory (with GPS model)
    • measurement of resistance of auxiliary electrodes RS and RH,
    • 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, 60 Hz and 400 Hz (with automatic selection of proper frequency of measuring signal or with
    • anual selection),
    • selection of maximum measuring voltage (25 V and 50 V)
    • 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 and Bluetooth*,
    • indication of battery state.