Working Principle of Disc Flange Torque Sensor:
The core components are a ring-shaped magnetic sensitive element and a magnetic ring. The magnetic ring is fixed on the rotating shaft. When the shaft rotates, the magnetic ring rotates and generates a changing magnetic field around the magnetic sensitive element. This change in magnetic field is captured by the magnetic sensitive element and converted into an electrical signal, which is then converted into a torque value by the signal processing circuit. This process is continuous, so the change in torque can be monitored in real time.
Why do We Need to Measure Torque?
Reason 1: Optimizing Fuel Efficiency (Marine Industry)
When you measure the true mechanical torque and power on the drive shaft, you can verify the true power output of the engine.
Reason 2: Load Management
Continuously monitor the material load on the equipment. Torque data also indicates whether the capacity in the equipment exceeds the capacity being used, thereby maximizing the throughput of the process. Using torque data to manage loads in industrial processes helps reduce downtime and improve operational efficiency.
Reason 3: High/Low Torque Alarm
By continuously monitoring the torque and power output of rotating equipment, you can ensure that the load remains within a safe operating range. When the load limit is triggered, the torque measurement data can signal your equipment. To shut down the equipment before a catastrophic failure occurs.
4: Diagnostics
By measuring torque and power, you can clearly understand the function of the equipment and the cause of the failure.
Reason 5: Predictive Maintenance
In addition to providing diagnostic capabilities for your equipment, measuring torque and power also allows you to complete preventive maintenance before major equipment failures occur, while also extending the service life of machinery.
How is Torque Calculated?
Generally, the formula for calculating torque is: Torque M = lever length r × vertical force F. The symbol is “M” and the unit is Newton meter Nm. Clockwise torque is expressed as a negative quantity and counterclockwise torque is expressed as a positive quantity.
The simplest formula for calculating torque in a motor is the vector product of the lever length and the force F applied perpendicular to the lever, that is, M = r×F.
In the actual application of motors, torque is called “driving torque”. The common formula for calculating torque is torque T = 9550×power P÷speed n, where P is the output power in kilowatts, kWn is the speed in revolutions per minute r/min.
