21 tips on how to install a torque sensor
The torque sensor is a critical component of accurate measurement and, by design, can act similar to a mechanical fuse. If it’s installed improperly, the torque sensor can be damaged beyond repair - costing you time and money. To get the best performance and longevity out of your torque sensor, be sure to install it properly. In this paper, you’ll learn installation tips and tricks in the following areas:
- Arrival - handling, moving, shipping
- Driveline design - critical speed, parasitic forces and design
- Mechanical installation - couplings, mounting and alignment
- Cabling - construction and noise immunity
- Electrical setup - shunt value, calibration data and onsite calibration.
Handle with care
Rotating torque sensors and reaction torque sensors are very sensitive measuring devices, and in turn, must be handled with care. Low-capacity torque sensors - those under 100 Newton Meters - in particular can be overloaded or wrecked very easily, so handle them gently. Just accidentally dropping the sensor can cause damage.
➤ Tip 1: Some of the heavier, larger-capacity torque sensors have threaded holes. To prevent rough handling, you can attach eyebolts and straps to the holes to lift and move the sensor more easily around your facility.
➤ Tip 2: If you need to ship your torque sensor, delicately pack the device in protective packing material.
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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.
Common shaft connections
There are three common shaft designs in torque sensors:
- Circular shaft-with or without keyways; with splines in some aerospace or automotive applications
- Flange-designed (flange-to-flange)-usually for telemetry-type torque sensors
- Square drive-typically for the calibration of torque wrenches or in the fatigue or tightening of fasteners
Each shaft design has different mechanical and electrical requirements for installation.