How to Calibrate a Torque Sensor?

The torque sensor calibration device is divided into two categories: dynamic and static. Dynamic torque sensors can also be called torque sensors, torque-speed sensors, non-contact torque sensors, and rotational torque sensors. Torque sensors are the detection of torsional torque sensing on various rotating or non-rotating mechanical components. ATO torque sensors convert physical changes in torque into precise electrical signals. It can be used in the manufacture of viscometers and electric (pneumatic, hydraulic) torque wrenches, with the advantages of high precision, fast frequency response, good reliability and long life.
However, when the existing torque sensor is used, it is mostly used as a precision torque measurement, which will cause mechanical fatigue after long-term use, so it must be calibrated and tested. So how to calibrate the torque sensor?

Torque sensor calibration method and steps

1. Calibration preparation: Prepare the calibration tools (weight components, torsion joints (for folding testing machines), enamel discs (for automatic torque machines), rotary testers, torsion handles).
2. Turn on the industrial control host, open the test software, and ensure that the pressure sensor and the motion card are connected stably, and the numerical value is within the range of error (0.01gf.cm-0.03gf).
3. Assemble the auxiliary connectors.
4. Open the software to select the corresponding range of the sensor, then open the calibration sensor interface, and clear the value when the sensor has no load.
5. Select the appropriate weight according to the range of the sensor (for the sensor with a small range, choose a small weight, and for a large range, choose a larger weight. For example, 2N.m choose 200g, 100g weight, 50N.m choose 500g, 1kg weight code), tie the weight to one end of the connecting piece, and hang it on one end of the pulley through the rope along the groove of the standard piece to keep the contact state stable without external force.
6. On the software calibration interface, click Allow Calibration, enter the torque value of the calibration weight (gravity * force arm), and click OK.
7. Wind the weight in another direction to check the reverse force value. If the difference is large (>0.5gf.cm), take the average value of the positive and negative force values.
8. Record the calibration data.
9. The calibration cycle is normally 1 year. If it is repaired or adjusted during use, it needs to be re-calibrated.

If you want to know more about how to  calibrate a rotary torque sensor, please check: