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1. (WO2009127469) HEATED BISTABLE PROBE HAVING SIMPLIFIED ELECTRICAL CONTACTING

Pub. No.:    WO/2009/127469    International Application No.:    PCT/EP2009/052666
Publication Date: Oct 22, 2009 International Filing Date: Mar 6, 2009
IPC: G01N 27/406
Applicants: ROBERT BOSCH GMBH
Diehl, Lothar
Seiler, Thomas
Inventors: Diehl, Lothar
Seiler, Thomas
Title: HEATED BISTABLE PROBE HAVING SIMPLIFIED ELECTRICAL CONTACTING
Abstract:
The invention relates to a sensor element (112) for determining at least one physical property of a gas in a measuring gas chamber (130), in particular for determining an oxygen concentration in the exhaust gas of an internal combustion engine. The sensor element (112) has at least two electrodes (124, 128), and at least one solid electrolyte (126) connecting the electrodes (124, 128). Furthermore, the sensor element (112) has at least one heating element (136) having at least two heating contacts (144, 146), wherein at least one first heating contact (144) of said heating contacts (144, 146) and one first electrode (124) of said electrodes (124, 128) can be contacted via a shared connection line (152), and wherein at least one second heating contact (146) of said heating contacts (144, 146) and one second electrode (128) of said electrodes (124, 128) are connected using a shared ground line (148).