Coriolis mass/flow density meter

US6513393B1 · kind B1 · utility

Inventors

• Gerhard Eckert · Weil am Rhein, DE
• Roman Häberli · Solothurn, CH
• Christian Matt · Lörrach, DE
• Alfred Wenger · Neftenbach, CH

Key dates

• Filing date: Dec 2, 1999
• Grant date: Feb 4, 2003
• Expiry date: Dec 2, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2009/006
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present Coriolis mass/flow density meter and method for measuring a mass flow rate of a medium flowing through a flow tube of a Coriolis mass flow meter provide measurement results which are independent of the current velocity field of the medium to be measured. At least one measuring tube is provided, through which the medium flows, which oscillates during operation. A means for measuring the oscillations is arranged at an inlet end of the measuring tube and provides a measurement signal. A second means for measuring the oscillations is arranged at the outlet of the measuring tube and provides a second measurement signal. A third measuring means provides a third measurement signal which represents the current Reynolds number of the flowing medium, Evaluation electronics generate a measurement value representing the mass through-flow. The evaluation electronics also generate a measurement value representing the current density of the medium.