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:
Aug. 14, 2018
Filed:
Jun. 30, 2014
Siemens Aktiengesellschaft, Munich, DE;
Christoph Paulitsch, Karlsruhe, DE;
Stefan Von Dosky, Karlsruhe, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for operating a pressure transducer which transducer includes a pressure sensor having a measurement membrane and a base body, between which a cavity is enclosed with a reference pressure, wherein utilizing a control and calculation unit in a pressure measuring mode, the capacitance of a measuring capacitor and a reference capacitor are determined, and a measured value of the media pressure is calculated as a function thereof, where during a diagnostics mode, the capacitance is determined and evaluated for a diagnostics capacitor formed by one measuring capacitor electrode and one reference capacitor electrode arranged on the same surface such that changes in the relative humidity in the cavity and/or process medium penetrating through a tear can be detected with via the diagnostic capacitor, and a warning signal regarding an impending malfunction can thus be generated and output to a service device in a timely manner.