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.

Date of Patent:
Feb. 14, 2023

Filed:

Dec. 10, 2018
Applicant:

Endress+hauser Flowtec Ag, Reinach, CH;

Inventors:

Stefan Pflüger, Munich, DE;

Wolfgang Drahm, Erding, DE;

Hao Zhu, Freising, DE;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 9/00 (2006.01); G01N 22/00 (2006.01); G01N 33/06 (2006.01); G01F 1/74 (2006.01); G01F 1/84 (2006.01); G01L 19/00 (2006.01); G01K 13/02 (2021.01);
U.S. Cl.
CPC ...
G01N 9/002 (2013.01); G01F 1/74 (2013.01); G01F 1/8436 (2013.01); G01F 1/8468 (2013.01); G01K 13/02 (2013.01); G01L 19/00 (2013.01); G01N 22/00 (2013.01); G01N 33/06 (2013.01); G01K 13/026 (2021.01);
Abstract

Disclosed is a method for determining of fat content of milk having variable solids fractions and flowing with variable gas content in a pipeline. The method includes ascertaining a velocity of sound and an average density value for the milk based on eigenfrequencies of at least two bending oscillation wanted modes of measuring tubes of a densimeter arranged in the pipeline. The method further includes ascertaining a static pressure in the pipeline; a gas volume fraction based on the velocity of sound; the average density; the pressure; a density of the milk without gas content based on the average density and the gas volume fraction; and a permittivity of the milk based on a propagation velocity and/or an absorption of microwaves in the milk. The fat fraction is calculated based on the density of the milk without gas content and on the effective permittivity.


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