SONEL MRU-21 Earth Resistance and Resistivity Meter

Basic measurements of earthing systems and continuity of connections

The Sonel MRU-21 earth resistance meter is a simple meter which makes it possible to measure earthing with the use of the technical method and to measure the continuity of protective and equalising connections.

Characteristic features of this model include very simple operation, excellent resistance to interference and high measurement precision. The meter allows for earth resistance measurements with auxiliary electrodes using the 3p method, as well as 2p resistance measurements. The device is also suitable for testing the continuity of equalising and protective connections. The Sonel MRU-21 meter is dedicated to employees of the power and electricity industry.

Product Datasheet

Category: Earth Resistance Tester

Description
Brand

Measurement methods

3-wire method – measurement of earthing systems using auxiliary probes
2-wire method – simplified measurement of resistance-to-earth
Resistance of earth and compensatory conductors measured using current ≥200 mA with auto-zero function – meets the requirements of EN 61557-4

Additional features

Measurement of resistance of auxiliary electrodes R_S and R_H
Measurement of interference voltage
Selection of maximum measuring voltage (25 V and 50 V)
Auto-zero function for the resistance of measurement leads (R_CONTzero)

SONEL MRU-21 Earth Resistance and Resistivity Meter

Brand

SONEL, POLAND

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