Easy way to measure earthing and soil
The Sonel MRU-11 earth resistance and soil resistivity meter is a simple meter that allows for measuring the earth resistance using the 3 pole and 4 wire method and the soil resistivity using the Wenner method. The instrument is easy to use, interference resistant and highly accurate.
MRU-11 is a basic device which, on the basis of the measurement result obtained, allows for checking the quality of the earthing system. With its ergonomic design, durable and robust casing and large, easy-to-read display, the meter is ideal for use in the field as well as in most work environments.
The device is simple to use and intuitive. It is the best choice for electrical contractors, technicians and earthing measurement professionals.
Earthing resistance measurements
- 3-pole and 4-wire method – measurement of earthing systems using auxiliary probes
- 2-pole method
- Earth resistivity – Wenner 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-11 is a simple meter that allows you to measure grounding by the use of the technical method (3- and 4-wire) and soil resistivity by Wenner method. The instrument is easy to handle, resistive to interference, and highly accurate.
MRU-11 is a basic device that allows for 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 0.01 Ω from ±(3% m.v. + 3 digits) 3-pole and 4-wire method 0.53…9999 Ω acc. to EN 61557-5 0.00…9999 Ω from 0 0.01 Ω from ±(3% m.v. + 3 digits) auxiliary electrodes resistance 0 Ω…19.9 kΩ 0 Ω…19.9 kΩ from 0 1 Ω ±(5% + 8 digits) Earth resistivity 0.0 Ωm…999 kΩm 0.0 Ωm…999 kΩm from 0.1 Ωm Depends on the accuracy of the RE 4p measurement, but not less than ±1 digit