Piezoelectric pressure transducer

US8113058B2 · kind B2 · utility

Assignee

• Piezocryst Advanced Sensorics GmbH · AT

Inventors

• Martin Baumgartner · Graz, AT
• Christian Reiter · Sarstedt, DE
• Friedrich Anton Holzinger · Graz, AT
• Alexander Schricker · Graz, AT

Key dates

• Filing date: Sep 10, 2009
• Grant date: Feb 14, 2012
• Expiry date: Nov 22, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L9/008
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

To render possible a high-quality, yet cost-effective provision suitable for mass production of a piezoelectric pressure transducer (1) with at least one piezoelectric measuring element (3, 3′, 3″) arranged on a housing base part (2), which measuring element is connected on the opposite side to a diaphragm (4), the measuring element (3, 3′, 3″) is fixed on an electrode sheet (5, 5′, 5″, 5″′) or directly on the base part 2 or the diaphragm 4, wherein the electrode sheet (5, 5′, 5″, 5″′) wraps conductively and positively as well as in a manner fixing the layers around a contact pin (7) insulated with respect to the base part (2) and projecting outwards.