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ROTARY TELEMETRY INTRODUCTION
A miniature
transmitter is attached to, or installed within the component under test. This
converts the transducer signals - usually strain and/or temperature - into a
form which enables non-contact transmission - usually inductive or RF.
A stationary pickup mounted nearby receives this signal and
re-transmits it via cable to the system demodulator/decoder for conversion to
analogue or digital data. In many systems the pickup incorporates an inductive
power supply which provides electrical power to the transmitter. In
non-demanding applications the transmitter may be powered by a small battery
unit.
Measurement tasks for rotary telemetry cover many areas and
although the operating principle is simple, transmitter designs are becoming
even smaller and more specialised - reflecting the trend in modern engineering.
As an example, over 70% of our sales are now custom designs.
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