Measuring arrangement for the determination of gas components in a gas mixtures

US6716327B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Claudio De La Prieta · Stuttgart, DE
• Gerhard Hoetzel · Stuttgart, DE
• Carmen Schmiedel · Marbach am Neckar, DE
• Petra Kitiratschky · Renningen, DE
• Thomas Schulte · Paderborn, DE
• Hans-Dieter Wiemhoefer · Münster, DE

Key dates

• Filing date: Sep 24, 1999
• Grant date: Apr 6, 2004
• Expiry date: Sep 12, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/419
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A measuring arrangement for the analysis of gas components in gas mixtures, having at least one electrochemical solid electrolyte test cell with at least one cathode in a diffusion channel is exposed to a gas mixture. The use of several cathodes wired one behind the other makes possible selective analysis of individual gas components. At the first cathode, oxygen is selectively pumped off by the use of specifically oxygen-ion-conductive layers so that another component of the gas mixture can be analyzed by the following electrode.