Vibration-type measurement pickup for measuring media flowing in two medium-lines, and inline measuring device having such a pickup

US7350422B2 · kind B2 · utility

Assignee

• Endress+Hauser Flowtec AG · CH

Inventors

• Ennio Bitto · Aesch, CH
• Holger Bernhard · Weil am Rhein, DE

Key dates

• Filing date: Oct 31, 2006
• Grant date: Apr 1, 2008
• Expiry date: Oct 31, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F15/02
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A measurement pickup includes at least four measuring tubes for conveying media to be measured. Each measuring tube has a first in-/outlet end and a second in-/outlet end. During operation, the measuring tubes vibrate, at least at times, especially simultaneously. The measurement pickup further includes an electromechanical exciter mechanism causing the measuring tube to vibrate, as well as a sensor arrangement reacting at least to local vibrations of the measuring tubes for producing at least one measurement signal influenced by vibrations of the measuring tubes. Of the at least four measuring tubes, two measuring tubes are, at least at times, inserted into the course of a first medium-line such that each of these two measuring tubes simultaneously conveys, in each case, a partial volume of a medium flowing through the first medium line, and two other measuring tubes of the at least four measuring tubes are, at least at times, inserted into the course of a second medium line such that each of these two measuring tubes simultaneous conveys, in each case, a partial volume of a second medium flowing through the second medium line. The measurement pickup can thus, on the one hand, hav…