Torque measurements

• Extremely fine 0.09° angular resolution
• Axial load
• Bidirectional torque measurement
• Rugged design
• Sampling rate up to 1 kHz

TASK

The task is to measure the static and dynamic torques in a test setup for a fan. An 8661 torque sensor, and specifically the dual-range model, was selected for the task, because not only can it measure the torque of the rotor drive in widely-spaced ranges at two speed levels but it can also provide extremely accurate readings.

SPECIFIC REQUIREMENT

• Static and dynamic torque measurements
• High angular resolution
• Rugged design using durable and low-friction sensor bearings
• High sampling rate because of the different operating states
• Precise measurement of clockwise and anticlockwise torque

SOLUTION

The 8661 torque sensor measures the rotating and static torque at two positions. A torque/speed/power calculation is performed for the rotating torque. The optional USB interface can be used with the application-oriented DigiVision software for analysing the measurements. 
The reactive torque and rotational angle are measured for the static torque. The dual-range model of the 8661 torque sensor is available with a choice of range factors (1:4, 1:5 and 1:10) or a custom factor. Dual-range sensors allow measurements in an additional measurement range which is narrower but has high measurement accuracy.