Electrochemical gas sensor with diamond electrode

US6584827B2 · kind B2 · utility

Assignee

• Drägerwerk Aktiengesellschaft · DE

Inventors

• Herbert Kiesele · Lübeck, DE
• Frank Mett · Lübeck, DE
• Peter Tschuncky · Lübeck, DE

Key dates

• Filing date: May 16, 2002
• Grant date: Jul 1, 2003
• Expiry date: May 16, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/308
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An electrochemical gas sensor for detecting a specific gas being measured with a plurality of electrodes (21, 3, 4), an electrolyte (7) and a gas-permeable membrane (9) has a reduced cross sensitivity with respect to interfering gases, a short response time and high sensitivity for the measured gas without the service life being reduced. The measuring electrode is a layer of doped diamond thin (21) on a porous substrate (22), where the gas-permeable memebrane is disposed over the measuring electrode to permit passage therethru of the gas being measured.