Method for measuring a medium flowing in a pipeline and measurement system therefor

US7406878B2 · kind B2 · utility

Assignee

• Endress+Hauser Flowtec AG · CH

Inventors

• Alfred Rieder · Landshut, DE
• Wolfgang Drahm · Erding, DE

Key dates

• Filing date: Sep 27, 2006
• Grant date: Aug 5, 2008
• Expiry date: Jan 25, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F1/8431
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

For measuring a medium, the medium flows through at least one inline measuring device measuring tube joined into the course of a pipeline, especially a measuring tube which vibrates, at least at times. Using an inline measuring device sensor arrangement arranged on the measuring tube and/or in its vicinity and reacting, at least mediately, to changes of the at least one physical parameter of the medium, at least one measurement signal is produced, which is influenced by at least one physical parameter of the medium in the measuring tube. Additionally, pressures effective in the medium are registered, in order to determine repeatedly a pressure difference existing in the flowing medium at least in part along the at least one measuring tube. Taking into consideration a pressure difference currently determined for the flowing medium, as well as applying a transfer function, measured values of a first kind are produced, which represent, following in time one after the other, the at least one flow parameter to be measured for the medium. The transfer function determines, in such case, at least how the measured values of the first kind are generated under application of the pressure diff…