Valve device, valve assembly and method for calibrating a valve assembly

US9441758B2 · kind B2 · utility

Assignee

• Festo AG & Co. KG · DE

Inventors

• Martin Maichl · Salach, DE
• Martin Meier · Heidenheim, DE
• Andreas Dickhoff · Rochester, US

Key dates

• Filing date: Dec 5, 2013
• Grant date: Sep 13, 2016
• Expiry date: Sep 17, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/8175
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A valve device including a valve housing which bounds a valve chamber in which a valve member is accommodated for movement between a blocking position and a release position in order to influence a free flow cross-section for a fluid in a flow path between an inlet passage terminating into the valve chamber and an outlet passage leading from the valve chamber, further including a first absolute pressure sensor for providing a first pressure signal as a function of an operating pressure in the flow path, and further including an evaluation circuit for processing the first pressure signal. It is provided that a second absolute pressure sensor is located outside the flow path, which is designed to provide a second pressure signal as a function of an operating pressure outside the flow path and which is connected to the evaluation circuit for enabling a differential pressure between the first and second pressure signals to be determined.