MMR-640
Catalog index: WMGBMMR640
Low Resistance Meter
The MMR-640 meter is designed to measure very low resistance of resistive objects. This product is made to be used in
power plants, railways and maintenance companies to measure resistance of:
- breakers, contacts,
- earthing conductors, equipotential bondings,
- welded and soldered connections,
- bolted connections,
- and other resistive objects.
MMR-640 can be also utilized on production lines (eg. at the final production control stage).
Product features
- measurement of very low resistance
- high immunity to disturbances
- easy operation
- big touchscreen
- automatic measurement mode
- autoranging
Measurement of resistance
| Range | Resolution | Measurement current | Accuracy |
| 0…999.9 μΩ | 0.1 μΩ | 10 A | ±(0.25% w.m. + 2 digts) |
| 1.0000…1.9999 mΩ | 0.0001 mΩ | ||
| 2.000…19.999 mΩ | 0.001 mΩ | ||
| 20.00…199.99 mΩ | 0.01 mΩ | 10 A / 1 A | |
| 200.0…999.9 mΩ | 0,1 mΩ | 1 A / 0.1 A | |
| 1.0000…1.9999 Ω | 0.0001 Ω | ||
| 2.000…19.999 Ω | 0.001 Ω | 0.1 A | |
| 20.00…199.99 Ω | 0.01 Ω | 10 mA | |
| 200.0…1999.9 Ω | 0.1 Ω | 1 mA |
Data Sheet 
User Manual
Declarations of conformity