Coriolis mass flowmeter

US7213470B2 · kind B2 · utility

Assignee

• ABB PATENT GMBH · DE

Inventors

• Jörg Gebhardt · Mainz, DE
• Frank Kassubek · Rheinfelden (Baden), DE
• Rene Friedrichs · Göttingen, DE
• Wolfgang Waldi · Schallstadt, DE
• Steffen Keller · Konstanz, DE
• Jorg Herwig · Dransfeld, DE
• Lothar Deppe · Oettingen, DE
• Kuno Hug · Heidelberg, DE
• Armin Gasch · Speyer, DE

Key dates

• Filing date: Oct 26, 2004
• Grant date: May 8, 2007
• Expiry date: Oct 26, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F1/849
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Coriolis mass flowmeter with a measuring pipe (2) vibrating in coupled flexural and torsional modes, characterized in that an attachment (20) which is formed rotationally symmetrically with respect to an axis of rotational symmetry and can be made to undergo torsional oscillations of the same frequency, but opposite phase, in relation to the torsional oscillating modes of the measuring pipe (2) is mechanically connected to the measuring pipe (2) and the axis of rotational symmetry of the attachment runs parallel to the straight line (8) (central axis) defined by the center points (4a, 6a) of the cross-sectional areas (4, 6) of the inlet and outlet of the measured section or coincides with this line.