Air Flow Sensors, Liquid Flow Sensors

We have a vast history in ultrasonic flow sensor development (developed by Gill Technology), producing solid-state gas flow sensor and liquid flow sensor products suitable for harsh environments. 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.

We have recently developed a compact Ultrasonic Oil Flow Sensor, suitable for motorsport engine development applications along with many others. Please click below to view details about this groundbreaking development.

Flow Sensors - Further Information

Each flow sensor 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.

Click here to view an animation showing how this flow sensor theory works.

If you have a custom flow sensor requirement please visit the Gill Technology website to view our examples of gas and liquid flow sensors and how we will work with you to get your product to market.

You may also be interested in: Ultrasonic Anemometers by Gill Instruments