Elster Metering Limited

Cranfield University

Michael Langley Sanderson

Thomas P Doyle

William Leslie Hodges Rawes

Patrick C J Harvey

Jon C Scott

A flow tube for a bidirectional flow meter includes a first flow chamber for generating a periodic pressure fluctuation whose frequency varies in dependence on the flow rate of fluid through the meter in a first direction. The flow tube also includes a second flow chamber for generating a periodic pressure fluctuation whose frequency varies in dependence on the flow rate of fluid through the meter in a second direction, opposite to the first direction. The first and second flow chambers are connected in series between an inlet port and an outlet port.

Bi-directional flow meter with two fluidic oscillators connected in series

A bi-directional flowmeter comprises a first fluidic oscillator device arranged to measure the flow of fluid in a first direction and a second fluidic oscillator device arranged to measure the flow of fluid in a second direction opposite to the first direction and in which the two oscillators devices are connected together in series between an inlet port and an outlet port of the flowmeter between which the fluid to be measured can flow.

Bi-directional oscillating jet flowmeter

An ultrasonic insertion flowmeter ( ) is disclosed having a probe ( ) which is adapted to be inserted into a duct, the probe having at least first and second ultrasonic transducer means, the probe ( ) being adapted to measure the transit time difference of an ultrasonic pulse along a first path and a second path, the difference in transit time for signals along the two paths enabling the flow rate to be measured. Preferably, the probe takes measurements in both the forward and reverse directions along each path, and is adapted to rotate after initial insertion from an insertion position to a measurement position, whereafter the probe ( ) may be drawn up against a wall of the duct so that alignment of the probe within the duct is readily achieved.

Growing community of inventors

Milton Keynes, United Kingdom

Michael Langley Sanderson