HIOKI RM3544 Micro-Resistance Meter

The HIOKI RM3544 micro-resistance meter is a high-precision instrument designed for measuring low resistance values in the range of 0.001 mΩ to 3.5 MΩ. It is ideal for use in both manual and automated production lines, ensuring accurate measurement of motor windings, transformers, as well as contact resistance of relays, switches, and connectors.

Main Features of RM3544

• Resistance measurement range: 0.001 mΩ to 3.5 MΩ.
• Basic accuracy: ±0.02%.
• Maximum resolution: 1 µΩ.
• Maximum test current: 300 mA.
• Measurement speed:
  • Fast mode – 21 ms (at 50 Hz) or 18 ms (at 60 Hz).
  • Medium mode – 101 ms.
  • Slow mode – 401 ms.
• Functions:
  • Temperature correction to account for changes in resistance due to temperature variations.
  • Comparator function with visual and audio indication of measurement results (pass/fail).
  • Ability to connect an LED comparator indicator to improve result visibility on the production line.
• Interfaces (RM3544-01 model):
  • EXT I/O.
  • RS-232C.
  • USB for integration into automated systems and data transfer.

Additional Features

The device supports a four-wire measurement method, ensuring high accuracy by eliminating the influence of lead resistance. Additionally, RM3544 has an automatic power frequency detection function (50/60 Hz) and corresponding adjustment to minimize interference.

For temperature measurement, an optional Z2001 temperature sensor can be used, allowing temperature correction and ensuring high measurement accuracy. Additional accessories, such as L2101 (clip-type) and L2102 (pin-type) measurement probes, expand the device's capabilities and allow adaptation to various tasks.