Sensor for measuring partial pressures of gases

US4792752A · kind A · utility

Assignees

• Societe Anonyme Drager · FR
• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Gerhard-Ludwig Schlechtriemen · Lübeck, DE
• Werner Weppner · Stuttgart, DE
• Helmut Schubert · Stuttgart, DE

Key dates

• Filing date: Dec 9, 1986
• Grant date: Dec 20, 1988
• Expiry date: Dec 9, 2006

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/4073
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor for measuring partial pressures of oxygen with an ion-conducting lid electrolyte of zirconium dioxide as the sensor element, which is arranged between two electrodes for measuring an electrically measurable quantity, is improved so that it is usable at an operating temperature of about 200.degree. C., by providing that the zirconium dioxide as the solid electrolyte is solely in its tetragonal modification and containing an addition of about 2-3 mol % yttrium oxide.