Sensor Technology has released a range of rotary torque transducers
called TorqSense, which uses surface acoustic wave devices as 'frequency
dependent' strain gauges to measure the change in resonant frequency
caused by applied shaft strain. The method offers inherently wide
bandwidth and immunity to electrical interference, the latter being one
of the main failings of other analogue based torque measurement
techniques.
TorqSense transducers are available in seven sizes to measure torque from
100mNm up to 10,000Nm at full scale deflection. To complete the picture,
Sensor Technology also supplies the necessary interface electronics and
an optional Windows based software package called TorqView, to display
the measured results.
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