Device for gas-sensoring electrodes

US6325979A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Dieter Hahn · Memmelsdorf, DE
• Gottfried Flik · Leonberg, DE
• Bernd Schumann · Rutesheim, DE

Key dates

• Filing date: Jun 7, 1999
• Grant date: Dec 4, 2001
• Expiry date: Jun 7, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2027/222
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensing element, in particular for an electrochemical sensor for determining gas concentrations, having at least one three-dimensional electrode arrangement, applied on a support plate and forming trenches of a depth for measuring changes in capacitance and/or conductivity in a gas-sensitive layer arranged to a height in the trenches, the height of the gas-sensitive layer being less than the depth of the trenches.