Tentech MPK-257 Digital Micro-ohmmeter
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Tentech MPK-257 portable digital micro-ohmmeter with 1mA–10A test currents, 0.1µΩ resolution, 0.1% accuracy, 4-wire Kelvin measurement, and temperature compensation.
Product details
| Model | MPK-257 |
| Manufacturer | Tentech |
| Category | Milliohmmeters & Microohmmeters |
| Availability | Made to order |
Description
Overview
The Tentech MPK-257 is a portable, microprocessor-controlled digital micro-ohmmeter for high-precision measurement of low resistances in switches, circuit breaker contacts, transformer and motor windings, wire and cable samples, and busbar joints. It employs the Kelvin 4-wire measurement method with temperature compensation to provide accurate readings even in varying environmental conditions, and includes USB data output for analysis and documentation.
Key Features
- Kelvin-type 4-wire (U/I) measurement method
- Test current range: 1 mA to 10 A
- Resolution: 0.1 μΩ with readings up to 2,000 Ω
- Basic accuracy: 0.1%
- Alphanumeric display with 4½ digit resolution
- Temperature compensation for environmental stability
- Open circuit output voltage: up to 10 V for faster stabilization
- Measurement circuit protection against voltage peaks from inductances
- USB data output for computer analysis
- Rechargeable internal battery
- Rugged impact-resistant plastic case with carrying handle
Applications
- High-precision switch and circuit breaker contact testing
- Measuring transformer and motor winding resistances
- Assessing wire and cable sample integrity
- Evaluating busbar joint quality
- Field measurements under varying environmental conditions
- Laboratory and on-site diagnostics requiring temperature stability
Specifications
| Test Current Range | 1 mA to 10 A |
| Resolution | 0.1 μΩ |
| Resistance Reading | 0 to 2,000 Ω |
| Basic Accuracy | 0.1% |
| Measurement Method | Kelvin 4-wire (U/I) |
| Display | Alphanumeric, 4½ digits |
| Temperature Compensation | Yes |
| Open Circuit Output Voltage | Up to 10 V |
| Data Output | USB |
| Power | Rechargeable internal battery |
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Tentech MPK-257 Digital Micro-ohmmeter
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