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Index: WMGBMRU10
Earth Resistance Meter
Technical Specification
  • Description

    Basic grounding measurements under all conditions

    The Sonel MRU-10 earthing resistance meter - a compact and easy to use meter designed for earthing measurements using the technical method and for earth resistance measurements using the bipolar method.

    The handy Sonel MRU-10 meter is characterised by exceptional ease of use while providing accurate results. The device is highly resistant to the occurrence of interference voltages. This is a basic type of meter that allows the quality of the earthing system to be assessed based on the test results obtained. Due to its ergonomic shape, robust casing and large and easy to read display, the MRU-10 meter is ideal for use in various areas. The device is ideal for electrical installation work. It is also a suitable working tool for technicians and measuring engineers involved in checking earthing.

    Earthing resistance measurements

    • 3-pole method – measurement of earthing systems using auxiliary probes
    • 2-pole method


    • resistance of auxiliary electrodes RH and RS
    • measurement of interference voltage to 100 V
    • indication of battery state
    • selection of maximum measuring voltage (25 V and 50 V)
    • Auto-OFF function


    MRU-10 is a simple meter that allows you to measure grounding by the use of the technical method and to measure grounding resistance by the use of the 2-pole method. The instrument is easy to handle, resistive to interference, and highly accurate. MRU-10 is a basic device that allows checking the quality of the grounding system on the basis of the received measurement result. Its ergonomic shape, durable and firm housing, as well as big and clear display make this instrument ideal to use both in the field and most working environments. The device is simple to operate and intuitive. It is the best choice for electrical installations contractors, technicians, and professionals dealing with grounding measurements.

  • Technical Specification
    Measurement functions Measurement range Display range Resolution Accuracy
    Interference voltage 0 V…100 V 0 V…100 V 1 V ±(10% m.v. + 1 digit)
    Earth resistance
    2-pole method 0.00…9999 Ω 0.00…9999 Ω from 0.01 Ω from ±(3% m.v. + 3 digits)
    3-pole method 0.53…9999 Ω acc. to EN 61557-5 0.00…9999 Ω from 0.01 Ω from ±(3% m.v. + 3 digits)
    auxiliary electrodes resistance 0 Ω…19.9 kΩ 0 Ω…19.9 kΩ from 1 Ω ±(5% + 8 digits)

    “m.v.” - measured value

  • Files

Optional accessories

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Basic in product

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