Fluid meter including a first wall thickness in the area of a transmitter and in the area of a receiver and a second wall thickness in the area there between

US10845338B2 · kind B2 · utility

Assignees

• BUERKERT WERKE Gmbh & CO. KG · DE
• BURKERT S.A.S. · FR

Inventors

• Yannick Fuchs · Ingelfingen, DE
• Yves Hoog · Triembach-au-Val, FR
• Bertrand Koenig · Ingelfingen, DE
• Stanislas Clatot · Ingelfingen, DE

Key dates

• Filing date: Apr 30, 2019
• Grant date: Nov 24, 2020
• Expiry date: Apr 30, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2291/048
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A fluid meter has a measuring tube which has a fluid channel allowing a fluid (F) to flow through and which has a measuring section in which at least one area of a measuring tube wall is formed as a waveguide for surface acoustic waves, which forms an interface with the fluid (F), and at least one transmitter for exciting acoustic waves in the waveguide as well as at least one receiver for receiving acoustic waves from the waveguide, wherein acoustic waves excited by the transmitter can propagate through the fluid (F) as a bulk wave (V) and the bulk wave (V) has at least one reflection point (IP) on the measuring tube wall. The measuring tube wall has a first wall thickness (T1) in the area of the transmitter and in the area of the receiver and has a second wall thickness (T2) which differs from the first wall thickness (T1) in the area of all reflection points (IP) of the bulk wave (V).