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Gas/liquid ultrasonic flowmeter

  • US 5,372,047 A
  • Filed: 09/28/1992
  • Issued: 12/13/1994
  • Est. Priority Date: 03/29/1990
  • Status: Expired due to Fees
First Claim
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1. An ultrasonic flowmeter having a measurement tube through which a fluid flows and having ultrasonic transducers operable as transmission transducers and reception transducers, comprising:

  • the ultrasound transducers being attached to a first sidewall of the measurement tube at a predetermined spacing from one another, and the ultrasound transducers having an associated principal ultrasound direction of transmitted ultrasound waves that defines a "W"-shaped ultrasonic path in the measurement tube;

    the measurement tube having a second sidewall opposed to the first sidewall, the "W"-shaped ultrasonic path defining a plurality of reflection locations on said first and second sidewalls relative to the transmitted ultrasound waves, and the second sidewall having convex area for dispersing a part of the transmitted ultrasound waves that departs from the principal ultrasound direction; and

    the measurement tube having at least one concave area in at least one of the reflection locations of the first and second sidewalls of the measurement tube for providing a focusing effect of the ultrasound waves that are transmitted along the "W"-shaped ultrasonic path.

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