Coriolis mass flow/density sensor with single straight measuring tube

US6647807B2 · kind B2 · utility

Assignee

• Endress+Hauser Flowtec AG · CH

Inventors

• Wolfgang Drahm · Erding, DE
• Georg Szaloky · Basel, CH
• Alfred Wenger · Neftenbach, CH
• Ennio Bitto · Aesch, CH
• Ole Koudal · Reinach, CH
• Christian Matt · Lörrach, DE
• Christian Schutze · Basel, CH

Key dates

• Filing date: Apr 30, 2002
• Grant date: Nov 18, 2003
• Expiry date: Apr 30, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N11/162
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A Coriolis mass flow/density sensor is provided. The sensor includes a measuring tube for conducting a fluid. The measuring tube is fixed in a support and may be coupled to a pipe via an inlet tube and an outlet tube. The sensor further includes an excitation arrangement for vibrating the measuring tube in a predetermined vibration mode, a sensor arrangement for detecting vibrations of the measuring tube, and a brake assembly coupled to the measuring tube and the support. The brake assembly is operable to suppress at least one mode of vibrations other than the predetermined vibration mode.