Transducer of the vibration type, such as an electromechanical transducer of the coriollis type

US6807866B2 · kind B2 · utility

Assignee

• Endress+Hauser Flowtec AG · CH

Inventors

• Wolfgang Drahm · Erding, DE
• Alfred Rieder · Landshut, DE

Key dates

• Filing date: Feb 22, 2002
• Grant date: Oct 26, 2004
• Expiry date: Feb 22, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F1/8472
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An electromechanical transducer of the Coriolis type which provides an output in response to the mass flow rate of a fluid flowing in a pipe. The transducer has a flow tube, curved symmetrically with respect to an axis of symmetry lying in a tube plane, for conducting the fluid. It also has a rigid support body for mounting the flow tube, with the flow tube being fixed to the rigid support body at both an inlet end and an outlet end. It further has an excitation system which in operation excites the flow tube into vibrations in a first eigenmode which is symmetrical in the tube plane.