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:
Nov. 28, 2023
Filed:
Sep. 15, 2021
Krohne Messtechnik Gmbh, Duisburg, DE;
Jan Förster, Essen, DE;
Abstract
A method for operating a magnetic-inductive flowmeter includes several steps. In a calibration step, a plurality of noise-removed comparison flow measurement values are determined. A comparison frequency spectrum is determined from at least a part of a plurality of detected, noisy raw measurement signals, on which the calculation of the noise-removed comparison flow measurement values is based. In a measurement operation step, a current noise-removed flow measurement value is calculated from a plurality of detected, noisy raw measurement signals. A current measurement frequency spectrum is determined from at least some of the plurality of detected, noisy raw measurement signals. In a comparison step, the current measurement frequency spectrum is compared with one of the comparison frequency spectra and a deviation value is determined. Depending on the deviation value, the current noise-removed flow measurement value is signaled as unreliable and/or as reliable. A corresponding magnetic-inductive flowmeter is also disclosed.