Ingress protection: IP 67
Measurement category: CAT III 600 V, CAT IV 300 V
Data transmission: Wi-Fi, LAN, USB
Display: touchscreen, graphic, color, backlit
Low resistance within range
Product features
- measurement of very low resistance
- high immunity to disturbances
- easy operation
- big touchscreen
- automatic measurement mode
- autoranging
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).
The MMR-640 meter provides an innovative combination of a high-performance measuring device with a modern user interface and advanced data management system.
Durable and practical casing
In response to the customers' needs the MMR-640 has been designed to operate in difficult environmental conditions. A unique casing with the IP67 ingress protection rating ensures that the device is both waterproof and dustproof.
The MMR-640 meter is equipped with a readable colour touchscreen that, due to its 800 x 480-pixel resolution, provides both high comfort of interacting with the interface and high readability of the measurement results.
Technical data
Resistance measurement
| Range |
Resolution |
Test current |
Accuracy |
| 0...999.9 μΩ |
1 μΩ |
10 A |
±(0.25% m.v. + 2 digits) |
| 1.000...1.999 mΩ |
0.001 mΩ |
10 A |
±(0.25% m.v. + 2 digits) |
| 2.00...19.999 mΩ |
0.01 mΩ |
10 A |
±(0.25% m.v. + 2 digits) |
| 20.0...199.99 mΩ |
0.1 mΩ |
10 A / 1 A |
±(0.25% m.v. + 2 digits) |
| 200...999.9 mΩ |
1 mΩ |
1 A / 0.1 A |
±(0.25% m.v. + 2 digits) |
| 1.000...1.999 Ω |
0.001 Ω |
1 A / 0.1 A |
±(0.25% m.v. + 2 digits) |
| 2.00...19.999 Ω |
0.01 Ω |
0.1 A |
±(0.25% m.v. + 2 digits) |
| 20.0...199.99 Ω |
0.1 Ω |
10 mA |
±(0.25% m.v. + 2 digits) |
| 200...1999.9 Ω |
1 Ω |
1 mA |
±(0.25% m.v. + 2 digits) |
Weight and dimensions
| Parameter |
Value |
| Net weight (kg) |
3.4 |
| Package weight (kg) |
5.9 |
| Package width (cm) |
30.5 |
| Package height (cm) |
25 |
| Package length (cm) |
40.5 |
