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:
Mar. 05, 2024
Filed:
Mar. 12, 2020
Applicant:
Endress+hauser Se+co. KG, Maulburg, DE;
Inventors:
Assignee:
Endress+Hauser SE+Co. KG, Maulburg, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 25/20 (2022.01); G01F 23/296 (2022.01);
U.S. Cl.
CPC ...
G01F 25/20 (2022.01); G01F 23/296 (2013.01);
Abstract
The invention relates to a method for state monitoring of a coil that is part of a device for determining at least one process variable of a medium in a containment. The method includes supplying the coil with an electrical excitation signal and receiving an electrical, received signal from the coil, ascertaining a first frequency for the excitation signal, in the case of which a first phase shift between the excitation signal and received signal is less than a predeterminable limit value, and ascertaining a state indicator for the coil based on the first frequency. Further disclosed is a device embodied for performing a method of the invention.