Method for operating a mass flow meter

US7343822B2 · kind B2 · utility

Assignee

• KROHNE AG · CH

Inventors

• Kourosh Kolahi · Duisburg, DE
• Thorsten Schröder · Gifhorn, DE
• Ralf Storm · Essen, DE

Key dates

• Filing date: Oct 26, 2005
• Grant date: Mar 18, 2008
• Expiry date: Apr 26, 2026

Classification

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

Abstract

A method for operating a mass flowmeter that employs the Coriolis principle and through which flows a medium, wherein the mass flowmeter incorporates a measuring tube that can be stimulated to oscillate, the measuring tube is stimulated to oscillate at a minimum of two mutually different frequencies and/or in at least two mutually different natural oscillating modes, and the resulting oscillations of the measuring tube are recorded. The density of the medium flowing through the measuring tube is determined by evaluating the acquired oscillations of the measuring tube on the basis of a physical-mathematical model for the dynamics of the mass flowmeter. In this fashion, highly accurate measurements are obtained for determining the density of the medium flowing through the measuring tube.