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:
Oct. 26, 2010
Filed:
May. 23, 2005
Wolfgang Brutschin, Schopfheim, DE;
Sascha D'angelico, Rümmingen, DE;
Wolfgang Brutschin, Schopfheim, DE;
Sascha D'Angelico, Rümmingen, DE;
Endress + Hauser GmbH + Co. KG, Maulburg, DE;
Abstract
An apparatus for determining and/or monitoring at least one process variable of a medium, and includes a sensor unit, a feedback electronics and a supplemental electronics. The sensor unit, feedback electronics and supplemental electronics form a first oscillatory circuit, which oscillates with at least one resonance frequency (ω) and/or with a resonance frequency (ω) within at least one resonance frequency range. The feedback electronics and the supplemental electronics form a second oscillatory circuit, which oscillates at a resonance frequency (ω), which differs from the resonance frequency (ω, ω) of the first oscillatory circuit.