Rotating torque sensors are incredibly precise instruments used to ensure peak performance in a variety of mechanical systems, from automotive drivetrains to wind turbines. Engineers take the time to carefully select the right type of torque transducer (analog/digital telemetry, circular shaft, reaction torque, etc.), and the same level of consideration should be paid to installing the device into the test and measurement driveline.
Installing your rotating torque sensor properly is critical for two overarching reasons. The first is to reduce measurement uncertainty, and the second is to reduce the risk of failure.
Improper mechanical installation can prove to be catastrophic for test benches, particularly in high-value applications where advanced measurement systems represent an enormous investment. In this article, HBM will offer a few brief tips on how to correctly install your rotating torque sensor and maintain confidence in your operation.
There is a set of basic mechanical principles that should be adhered to when designing your driveline and installing your rotating torque sensor, but it is important to remember that different configurations will require different mechanical parameters to reach maximum efficiency. For instance: When measuring peak torque, you are going to want a torsionally rigid coupling capable of transmitting accurate torque information at high RPMs. However, for lower speed torque signals, coupling rigidity can be relaxed.
This also depends upon the type of mounting used – typically either foot-mounted or floating. As mentioned earlier, it is always best to install the torque sensor as close to a bearing as possible to eliminate vibration, particularly for floating drivelines. There are too many possible configurations to cover in a single article, so please refer to our in-depth technical note below for more detail on specific driveline setups:
Installing your torque sensor properly is vital to successful data acquisition. We appreciate that no two systems are alike and that covering the broad strokes of installation here may not answer all of your questions. Yet the HBM team is always happy to help. Contact us today if you have any specific queries about rotating torque sensor installation, or for more information on our transducer range.