Measurement transducer of vibration-type

US7325461B2 · kind B2 · utility

Assignee

• Endress+Hauser Flowtec AG · CH

Inventors

• Ennio Bitto · Aesch, CH
• Gerhard Eckert · Weil am Rhein, DE
• Sergej Lopatin · Lörrach, DE
• Christian Matt · Lörrach, DE
• Helmut Pfeiffer · Steinen, DE
• Alfred Rieder · Landshut, DE
• Martin Anklin-Imhof · Füssen, DE
• Martin Stucki · Pfäffikon, CH

Key dates

• Filing date: Dec 6, 2006
• Grant date: Feb 5, 2008
• Expiry date: Dec 6, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F1/8427
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The measurement transducer includes at least two oscillatably held transducer tubes vibrating, at least at times, during operation, of which at least one transducer tube serving to convey at least a volume portion of a medium to be measured, communicates with a pipeline; as well as at least one transducer element for converting electrical energy into mechanical and/or vice versa. The two transducer tubes are mechanically coupled together by means of at least one, inlet-side, coupling element and by means of at least one, outlet-side, coupling element in such a manner that both the inlet-side coupling element, as well as also the outlet-side coupling element, are subjected during operation repeatedly to deformations which correspond to vibrations of at least one of the two transducer tubes for converting electrical energy into mechanical, oscillatory energy and/or vice versa. The transducer element, especially a transducer element formed by means of a piezoelectric, deformation body, and at least one of the coupling elements, are, at least mediately, mechanically coupled together in such a manner that the transducer element executes, at least in part, oscillatory movements, which co…