Why choosing the proper rotating torque sensor is important

There are two key reasons for taking the time to carefully select a torque sensor: to prevent damage and ensure accuracy.

Prevent damage - The torque sensor is a critical component of accurate measurement and, by design, can act similar to a mechanical fuse. Proper selection is important in order to avoid a mechanical failure as the torque sensor is one of the weaker parts of the driveline. This is because, to measure torque accurately, strain must be directed to an exact point and a strain gauge must be placed over that point - generally the weakest point of the sensor structure.

Ensure accuracy - It is important to limit the uncertainty of torque data. By ensuring that all of the electrical requirements of the torque sensor are addressed, you can acquire the best possible data, making it more usable in your specific application.

This white paper will help you choose the proper torque sensor for your needs by reviewing:

  • Types of torque sensors, such as reaction, circular shaft, analog telemetry, digital telemetry and dual-range torque sensors
  • Application considerations, such as accuracy, capacity range, RPM rating, output requirements and response times
  • Environmental considerations, such as temperature, dirt and electromagnetic interference
  • Dynamic considerations, such as rotational effects, critical speeds and extraneous loading
  • Physical requirements, such as size and mounting limitations of the torque sensor
  • Costs or budget considerations

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About the Author

Mark Minda is the business development manager for HBM’s torque products. He has more than 20 years of experience in the repair, calibration and day-to-day use of torque sensors. Mark has been with HBM for seven and a half years.

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