Patent ID: 6613207
Filing Date: 2003-09-02
Classification: G01N

Abstract:
An electrochemical sensor for ascertaining a gas concentration in an exhaust gas of an internal combustion engine, comprising:an oxygen-ion-conductive solid electrolyte provided with electrode layers situated at a preselected distance from one another; at least one resistance heating element; at least one electrical insulating layer separating the at least one resistance heating element from the solid electrolyte, the at least one electrical insulating layer including an electrode-side electrical insulating layer; at least one foil binder layer situated between the at least one electrical insulating layer and the solid electrolyte; and at least one electron-conductive intermediate layer situated between the electrode-side electrical insulating layer and the solid electrolyte, wherein no solid electrolyte layer is situated in a region above the at least one resistance heating element between the at least one resistance heating element and the at least one electron-conductive intermediate layer.