Gas Flow Sensors
Working with Gill Technology, we have produced a number of custom
gas-flow products which use ultrasonic technology to determine
the rate of flow.
Each system has a pair of ultrasonic transducers and conditioning
electronics that are used to measure the time taken for a pulse
of ultrasound to travel between the transducer pair. A measurement
is taken in both directions and the difference in time of flight
is then used to calculate the flow velocity.
If there is no gas flow then the time measured in each direction
will be the same and no velocity will be measured. If a gas flow
is present then the down stream ultrasonic pulse will get there
quicker than the upstream ultrasonic pulse and hence a velocity
can be computed.
This
information has been kindly supplied by:
Gill
Sensors
Tel: +44 (0)1590 613400
Fax: +44 (0) 1590 613401
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