Electrochemical sensor with diffusion labyrinth

US8632665B2 · kind B2 · utility

Assignee

• MSA Auer GmbH · DE

Inventors

• Rolf Eckhardt · Alzenau, DE
• Martin Weber · Borgo San Lazzaro, DE

Key dates

• Filing date: May 7, 2009
• Grant date: Jan 21, 2014
• Expiry date: May 7, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/404
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to an electrochemical sensor including a housing with a chamber containing an electrolyte, at least one measuring electrode for oxygen detection, at least one counter electrode and at least one reference electrode, wherein the sensor has a two-part diffusion barrier, wherein a first part of the barrier forms a labyrinth with a second part of the barrier disposed between the measuring and the counter electrode.