Patent ID: 6820500
Filing Date: 2004-11-23
Classification: G01F

Abstract:
A flowmeter detector for determining the flow volume of a fluid medium, said flowmeter detector comprising:a measuring line having first and second ends and fluid medium entry and exit ports adjacent said first and second ends, respectively, said fluid medium flowing within said measuring line between said entry and exit ports; first and second acoustic couplers for introducing acoustic energy into said measuring line located at said first and second ends, respectively; each of said acoustic couplers including; a cylindrical portion having a planar end wall on one end attached to a respective and associated first and second end, said cylindrical portion having a cross-section diameter less than the cross-section diameter of said interior bore; and a conical portion including a frustum extending from a second end of said cylindrical member, to a base surface having a diameter greater than the cross-section diameter of said interior bore, said conical member base surface having an acoustic transducer attached thereon; each of said transducers first operated to simultaneously transmit pulsed acoustic energy into said measuring line, and subsequently operated to receive the acoustic energy propagated through said measuring line; and means for receiving the acoustic energy propagated through said measuring line to determine said flow volume by evaluating the difference in the travel times of the pulsed acoustic energy propagated through said measuring line.