Device for measuring the oxygen concentration in gases

US6739179B2 · kind B2 · utility

Assignee

• ABB PATENT GMBH · DE

Inventors

• Albrecht Vogel · Oberkochen, DE
• Dieter Binz · Hirschberg, DE
• Manfred Wetzko · Wilhelmsfeld, DE
• Peter Krippner · Karlsruhe, DE

Key dates

• Filing date: Oct 29, 2001
• Grant date: May 25, 2004
• Expiry date: Oct 29, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/74
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A measuring device for determining the oxygen content in gases is described. The measuring device is disposed between two magnets that are positioned at a distance from one another. The measuring device is equipped with a sensor that is held rotatably within a frame. The sensor has two parallelepipedic bodies that are both made hollow or solid and are connected to one another via a web-shaped structural element. The web-shaped structural element is fastened to the frame via at least one holding element, so that the sensor can be rotated about its center of gravity. The amount of rotation is dependent on the quantity of oxygen that is concentrated between the two magnets. A current can be conducted through a conductor track led on the surface of the sensor and generates a correspondingly high restoring force by which the sensor is brought into the position of rest again.