Wedge and wedge unit for use in ultrasonic doppler flow meter

Details Wedge and wedge unit for use in ultrasonic doppler flow meter Wedge and wedge unit for use in ultrasonic doppler flow meter

G - Physics

01

F

G01F 1/66 (2006.01) G01F 15/00 (2006.01)

Patent

CA 2494509

A wedge unit according to the present invention is used for an ultrasonic Doppler flow meter, being mounted on the outer wall of a pipe in which a fluid flows, supplying an ultrasonic wave to the fluid, receives the reflected wave and supplies the reflected wave to a flow rate calculation unit, comprises a wedge with one surface thereof being mounted on a part of the outer circumference of the pipe and on another surface thereof being equipped with an ultrasonic oscillator that generates the ultrasonic wave in response to an electric signal and receives the reflected wave; and an ultrasonic wave attenuation unit being mounted on the outer circumference of the pipe so as to include a position where an ultrasonic wave injected from the ultrasonic oscillator into the pipe by way of the wedge first reaches the outer wall of the pipe after being reflected by the inner wall thereof.

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