Overview of Sonel MRU-21 Earth Resistance Tester:
The Sonel MRU-21 is an earth resistance meter based on the 3-pole measurement system. The MRU-21 features automatic compensation for the used test leads. In addition, it is possible to adjust the maximum measuring voltage. This meter can be carried around the neck and features soft-touch buttons for easy use. A big multifunctional LCD display shows the results and explains the necessary user inputs. All functions are easy accessible and customizable with the soft-touch buttons through the built-in menu.The MRU-21 can be connected to a PC with the supplied USB-cable. Measurement results can then be downloaded with the included Sonel Reader software. The internal memory of the meter can support up to 990 measurements.
Features of Sonel MRU-21 Earth Resistance Tester:
- 3-Pole Earth Resistance Tester Kit
- Earth resistance measurements using auxilary probes with 3-pole method, with the resistance of auxillary rods up to 50k, as well as resistance measurements using 2-pole method
- Measurement of continuity of equipotential bondings and protective conductors with auto-zero function
- Measurement of and high immunity to presence of interfering voltages from power system
- Measurement of resistance of auxiliary electrodes RS and RH
- Memory of 990 measurements, can transfer data via USB
- Battery or rechargeable battery power supply, with indication of battery state and auto-off after 5 minutes
- Selection of maximal measurement voltage (25V or 50V)
- 300V CAT IV
- Includes: 1.2m blue test lead, 2.2m black test lead, 30m red test lead on reel, 15m blue test lead on reel, 2x crocodile clips black & blue, USB cable, 2x 30cm earth probes, carry case, hanging straps, batteries, Sonel Reader software, Calibration certificate.
Specifications of Sonel MRU-21 Earth Resistance Tester:
| Measurements |
battery charge > 1000 |
| Continuity |
0.13 - 199 kΩ |
| IP Rating |
IP54 |
| Dimensions |
288 x 223 x 75 mm |
| Earthing Resistance |
0 - 1,99 kΩ |
| interference voltage |
0 - 100V |
| Internal Memory |
up to 990 measurements |
| Measurement Range |
0 - 1,99 kΩ |
| Connectivity |
USB |
Document:
Sonel MRU-21 Earth Resistance Tester
