Sonel MMR-640 Micro-Ohmmeter
The Sonel MMR-640 Micro-Ohmmeter can be used to measure very low resistance of resistive objects such as breakers, contacts, earthing conductors, equipotential bondings, and welded, soldered and bolted connections. This makes it particularly useful to maintenance, railway and power plant companies. It can also be used to verify quality at the final stage of production lines. The Sonel MMR-640 Micro-Ohmmeter has a maximum resistance range of 1999.9Ω.
The Sonel MMR-640 Micro-Ohmmeter is auto-ranging and features an automatic measurement mode, making this resistance meter simple to use. Also adding to the Sonel MMR-640 Micro-Ohmmeter’s ease of operation is its modern user interface, advanced data management system and large touchscreen display with 800 x 480px resolution. The Sonel MMR-640 Micro-Ohmmeter’s display is both comfortable and easy to read.
Furthermore, the Sonel MMR-640 Micro-Ohmmeter is housed in a durable, waterproof and dustproof casing with an ingress protection rating of IP67. As a result, the Sonel MMR-640 Micro-Ohmmeter is suitable for use in rugged environments.
Additionally, the Sonel MMR-640 Micro-Ohmmeter has high immunity to disturbances and is high performing ensuring that it is able to ascertain accurate and reliable measurement results.
The Sonel MMR-640 Micro-Ohmmeter is a high-performing, easy-to-use and ergonomic resistance meter with an advanced data management system.
Sonel MMR-640 Micro-Ohmmeter Key Features
- Measure very low resistance of resistive objects
- Check breakers, contacts, earthing conductors, equipotential bondings and welded, soldered and bolted connections
- Ideal for maintenance, railway and power plant companies
- Suitable for quality control applications on production lines
- Maximum resistance range: 1999.9Ω
- Auto-ranging
- Automatic measurement mode
- Modern user interface
- Advanced data management system
- Large touchscreen display
- Resolution: 800 x 480px
- The display is comfortable and easy to read
- Housed in a durable, waterproof and dustproof casing
- IP67 (with the lid closed, IP54 with the lid open)
- Suitable for use in rugged environments
- High immunity to disturbances
- High performing
- High-performing, easy-to-use and ergonomic resistance meter with an advanced data management system
What’s Included?
- Sonel MMR-640 Micro-Ohmmeter
- 2x Kelvin Crocodile Clips
- 3x Double-Wire Test Lead
- Li-Ion Rechargeable Battery 7.2V
- USB Cable
- Mains IEC C13 Plug
- Sonel Reader PC Software
- L-11 Carrying Case
- Calibration Certificate
Sonel MMR-640 Micro-Ohmmeter Technical Specifications
| Resistance Measurement | |||
| Range | Resolution | Test Current | Accuracy |
| 0…999.9 μΩ | 0.1 μΩ | 10 A | ±(0.25% m.v. + 2 digits) |
| 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 | |
| Technical Specifications | |||
| insulation type according to EN 61010-1 | double | ||
| insulation type according to EN 61010-1 | III 600 V | ||
| ingress protection according to EN 60529 | with closed housing | IP67 | |
| with open housing, powered from the battery pack, installed plugs | IP54 | ||
| with open housing, powered from mains and/or without plugs | P40 | ||
| protection against external voltage | up to 600 V AC for 10 s | ||
| power supply to battery charger | 90 V…265 V | ||
| 50 Hz…60 Hz | |||
| 2 A | |||
| battery charging time | approximately 3.5 hours | ||
| number of measurements (of resistive objects) with 10 A current performed when powered from the battery pack |
700…800 depending on the ambient temperature | ||
| maximum wire resistance for 10 A current | 300 mΩ | ||
| time of performing the resistance measurement | with selected resistive object type and bidirectional current flow |
3s | |
| with selected inductive object type, dependent on the resistance and inductance of the object | 5 s or more | ||
| dimensions | 318 x 257 x 152 mm | ||
| meter weight | approx. 3.5 kg | ||
| operating temperature | -10°C…+50°C | ||
| charger operating temperature | 0°C…+45°C | ||
| storage temperature | -20°C…+60°C | ||
| humidity | 20%…90% | ||
| reference temperature | +23°C ± 2°C | ||
| reference humidity | 40%…60% | ||
| altitude (above sea level) | <2000 m | ||
| temperature coefficient | ±0.01% of d.v./°C ± 0.1 digit/°C | ||
| time to AUTO-OFF | 5…45 minutes or option not active, depending on the setting | ||
| TFT graphic display | 800 x 480 pixels | ||
| interface standard | USB | ||
| quality standard | design and manufacturing are ISO 9001 compliant | ||
| the product meets the EMC requirements (emission for industrial environment) according to |
EN 61326-1 and EN 61326-2-2 | ||
| compliance with FCC Rules | Class A digital device | ||
| SKU | MMR-640 |
|---|---|
| Manufacturer Part Code | MMR-640 |
