Patent ID: 6715366
Filing Date: 2004-04-06
Classification: G01F

Abstract:
A clamp-on ultrasonic flowmeter comprising a pair of ultrasonic transmitting-receiving devices, each comprising a ultrasonic propagating element in the form of a wedge having a bottom surface and a slanting surface extending from one edge of the bottom surface at an acute angle, and a ultrasonic transducer attached on the slanting surface, wherein the ultrasonic propagating element comprises a first ultrasonic propagating member having on a bottom surface thereof a plurality of planes aligned in parallel with the slanting surface on which the ultrasonic transducer is attached, the first ultrasonic propagating member being composed of a plurality of sheet units in which each sheet unit is composed of plural high modulus fibers aligned in parallel in resinous material, and a second ultrasonic propagating member of elastic or plastic material, so as to propagate ultrasonic wave emitted by the ultrasonic transducer onto the bottom surface of the ultrasonic propagating element at an angle perpendicular to the slanting surface.