Torque Meter Operating and Calibration Guide
Torque meters measure rotational force in applications ranging from motor testing to fastener tightening verification. Accurate torque measurement is essential for quality control and equipment protection.
I. Operating Principles
- Strain Gauge Torque Sensors: Measure the torsional strain on a shaft. Provide high accuracy and are suitable for dynamic measurements.
- Reaction Torque Sensors: Measure the reaction force on a stationary housing. Suitable for static torque measurements such as motor stall torque testing.
- Rotary Torque Sensors: Use slip rings or wireless telemetry to transmit signals from a rotating shaft. Essential for measuring torque on rotating machinery.
II. Installation
- Align the torque sensor carefully with the drive and load shafts. Misalignment causes measurement errors and premature bearing wear.
- Use flexible couplings on both sides of the torque sensor to accommodate minor misalignment
- Ensure adequate support for the sensor and connected equipment to prevent bending moments
- For rotary sensors, verify that the speed rating of the sensor is not exceeded
III. Calibration
- Use a calibrated torque calibration beam and reference weights for static calibration
- Apply torque in both clockwise and counterclockwise directions to verify bidirectional accuracy
- Calibrate at multiple points across the full measurement range
- Document calibration results and update calibration certificates
IV. Maintenance
- Inspect couplings for wear and replace as needed
- Check for bearing noise indicating wear in rotary sensors
- Verify calibration quarterly for critical applications
- Protect sensors from overload by using mechanical stops or torque limiters
