The Use and Maintenance of Torque Sensors

A torque sensor, also known as a torque transducer, torque meter, or torque gauge, is a precision measuring instrument used to measure various types of torque, rotational speeds, and mechanical power. They are categorized into dynamic and static types. These sensors feature high precision, fast frequency response, good reliability, and a long lifespan.

The application range is extremely broad and is primarily used for:

1. Detecting the output torque and power of rotating power devices like electric motors, engines, and internal combustion engines.
2. Testing torque and power in devices such as fans, water pumps, gearboxes, and torque wrenches.
3. Measuring torque and power in railway locomotives, automobiles, tractors, aircraft, ships, and mining machinery.
4. Monitoring torque and power within sewage treatment systems.
5. Manufacturing viscosity meters.
6. Within the process industry and continuous manufacturing processes.
7. In laboratories, testing departments, production monitoring, and quality control.

Using Torque Sensors

1. Based on the shaft connection form and the length of the torque sensor, determine the distance between the prime mover and the load. Adjust the axial alignment relative to the reference plane so that the co-axiality is less than φ0.03mm, and secure both the prime mover and the load to the reference plane.
2. Install the couplings onto their respective shafts.
3. Adjust the position of the torque sensor relative to the reference plane so that the co-axiality between its axis and those of the prime mover and load is less than φ0.03mm, and secure the torque sensor to the reference plane.

Signal Output and Signal Acquisition of Torque Sensors

The basic forms of torque signal output include square wave signals and pulse signals. According to user requirements, these can be configured to output voltage analog signals or current analog signals (for unidirectional, static torque measurements).

The torque signal processing includes:

• Sending the frequency signal output by the torque sensor to a frequency counter or digital display for direct reading of a frequency signal or voltage/current signal proportional to the torque.
• Sending the torque and frequency signals from the torque sensor to a microcontroller's secondary instrument for direct display of real-time torque values, speed, output power values, and RS232 communication signals.
• Directly sending the frequency signals of torque and speed to a computer or programmable logic device (PLD) for processing.

Maintenance and Upkeep of Torque Sensors

1. Lubricate the bearings at both ends of the torque sensor annually. To do this, simply open the bearing caps at both ends, apply lubricating grease to the bearings, and reinstall the end caps.
2. Store the sensor in a dry, non-corrosive environment with a room temperature range of -20°C to +70°C.