Earth resistance and soil resistivity meter MRU-200 with Calibration Certificate WMPLMRU200

Universal meter for comprehensive grounding analysis

The Sonel MRU-200 earth resistance and soil resistivity meter is an advanced device that combines all known methods of measuring earth resistance. This makes it a comprehensive tool for both professional installers and end-users looking for precise and reliable results. The device allows measurements using the technical method (3- and 4-wire), with additional clamps (multiple earthing), two-pole and shock (earth impedance measurement). The two-pole method allows measurements without the need for auxiliary probes, and the shock method is used in the diagnostics of lightning protection earthing and measurements of extensive earthing systems.

Wide measurement range and functionality

The MRU-200 is not limited to measuring earth resistance. It also offers the possibility of measuring soil resistivity, continuity of protective and equipotential bonding, and leakage or fault currents using clamps. High measurement accuracy, starting from 0.100 Ω, guarantees the reliability of results in accordance with PN-EN 61557. Additionally, the meter has a clamp calibration function, a real-time clock (RTC) and the ability to transmit data to a computer via USB.

Application in various conditions

The MRU-200 design has been designed with difficult working conditions in mind. It generates a measurement current exceeding 200 mA, which ensures effective measurements even in energy facilities such as transformer stations or power stations. The use of clamps eliminates the need to disconnect control connections, which is particularly useful during work in atmospheric conditions where connecting elements may be corroded. The graphical user interface provides clear readings and intuitive operation.

• Measurement methods: Technical (3p/4p), two-pole, shock (4/10μs, 8/20μs, 10/350μs), with clamps.
• Additional measurements: Soil resistivity, continuity of protective and equipotential bonding, leakage current.
• Application: Lightning protection installations, energy facilities, earthing systems in buildings and structures.
• Durable construction: Resistant to difficult working and atmospheric conditions.
• Intuitive operation: Graphical LCD display with backlight and simple menu.
• Data storage: Memory for 990 measurements (10 banks of 99 cells).
• Data transmission: USB for transferring data to a computer or mobile devices (Sonel MRU Mobile application).

The MRU-200 meter is an indispensable tool for anyone who cares about the safety and proper functioning of earthing systems. Its versatility and precision make it an ideal choice for both professionals performing regular electrical installation inspections and for people who care about safety in their home or company.