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:
Jul. 10, 2012
Filed:
Jul. 16, 2007
Armin Wernet, Rheinfelden, DE;
Roland Dieterle, Lörrach, DE;
Kaj Uppenkamp, Wehr, DE;
Endress + Hauser GmbH + Co. KG, Maulberg, DE;
Abstract
An apparatus for ascertaining and/or monitoring a process variable. The apparatus includes a sensor element, and at least one electronics unit, which, for measuring the process variable, supplies the sensor element with an electrical exciter signal, receives an electrical measurement signal from the sensor element and evaluates the measurement signal with respect to the process variable. An analog-digital converter is provided in the electronics unit. For measuring the process variable, the electronics unit supplies the sensor element with a first exciter signal and a second exciter signal, timewise one after the other, in such a manner, that the first exciter signal and the second exciter signal have a settable phase (φ)relative to one another.