The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2007
Filed:
Dec. 07, 2004
Matt Christian, Aesch, CH;
Ida Wenger, Legal Representative, Neftenbach, CH;
Michael Fuchs, Eschbach, DE;
Wolfgang Drahm, Erding, DE;
Matt Christian, Aesch, CH;
Ida Wenger, legal representative, Neftenbach, CH;
Michael Fuchs, Eschbach, DE;
Wolfgang Drahm, Erding, DE;
Endress + Hauser Flowtec AG, Reinach, CH;
Abstract
A Coriolis mass-flow/density meter includes at least one measuring tube through which a two, or more, phase medium during operation. A support means of the Coriolis mass-flow/density meter is fixed to an inlet end and an outlet end of the measuring tube and thus holds the tube such that it can oscillate. During operation, the measuring tube is made to oscillate with mechanical oscillations, especially bending oscillations, by means of an exciter arrangement. Additionally, the Coriolis mass-flow/density meter includes means for producing measurement signals (x, x) representing inlet end and outlet end oscillations of the measuring tube. An evaluation electronics produces an intermediate value (X') derived from the measurement signals (x, x) and representing a provisionally determined mass flow rate. The evaluation electronics also produces a second intermediate value (X) derived from the measurement signals (x, x), especially from a second measured value (X) representing a density of the medium and likewise produced in the evaluation electronics. The second intermediate value (X) represents a measure for an amount of a phase of the medium. Using the intermediate value (X), a correction value (X) for the first intermediate value (X′) is determined, with the correction value (X) being selected by means of the intermediate value (X) from a plurality of preset values stored in a table memory. Additionally, the evaluation electronics produces a measured value (X) representing a mass flow rate through use of the intermediate value (X′) and the correction value (X).