SENSOR ELEMENT FOR DETERMINING A PHYSICAL PROPERTY OF A MEASURING GAS

SENSOR ELEMENT FOR DETERMINING A PHYSICAL PROPERTY OF A MEASURING GAS

A sensor element is provided for determining a physical property of a measuring gas, especially of the concentration of at least one gas component in the measuring gas, which has at least one ceramic layer, a diffusion barrier adjoining the at least one ceramic layer and at least one electrode that...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DIEHL LOTHAR, SEILER THOMAS, OHLY CHRISTIAN, GRAEBER JOACHIM, EISELE ULRICH, STRASSNER WALTER
Format: Patent
Sprache:eng
Schlagworte:
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:A sensor element is provided for determining a physical property of a measuring gas, especially of the concentration of at least one gas component in the measuring gas, which has at least one ceramic layer, a diffusion barrier adjoining the at least one ceramic layer and at least one electrode that is exposed to the measuring gas diffusing through the diffusion barrier. In order to reduce the production variations with respect to the static pressure dependence and the limiting current of the diffusion barrier), the proportions of silicon in the diffusion barrier and in the at least one ceramic layer are approximately equal and differ by not more than 1 wt. %.