S Himmelstein, represented in Australia by Hylec Controls , has released a range of power transducers with noncontact inductive coupling of torque signal. They also have an in-built amplifier, providing digital and analogue outputs of torque, speed and power.
An RS232 serial port provides the digital outputs and the ability to scale and calibrate the analogue and digital outputs in engineering units. These developments give an accuracy of 0.08% and enable the transducers to be connected to a PC for calibration and data logging. They are also more cost effective than a standard transducer with a separate measuring instrument.
The units are particularly resistant to electrical interference, which simplifies measurement in noisy environments.