Exhaust-gas treatment device having a sensor foil

1. A device for exhaust-gas treatment, the device comprising:

at least one housing having an inner surface and an opening;

an electrical insulating layer surrounding said opening on said inner surface;

an electrode extending through said opening; and

at least one sensor foil disposed in said housing and having an edge bearing against said inner surface of said housing, said sensor foil being formed at least with a sensor element and a conductor element, said conductor element extending to said edge of said housing, said conductor element configured to be contacted through said opening in said housing, and said conductor element being cohesively connected to said electrode close to said edge.

2. The device according to claim 1 , wherein said at least one sensor foil forms a honeycomb body.

3. The device according to claim 1 , wherein said housing has an outer surface, a sleeve is gas-tightly mounted on said outer surface, and said electrode is mounted in an electrically insulated manner in said sleeve.

4. The device according to claim 3 , which further comprises a connecting plug to which at least one of said electrode or said sleeve is directly connected.

5. The device according to claim 1 , wherein said at least one sensor foil is brazed to said housing.

6. The device according to claim 5 , wherein said electric insulating layer, disposed on said inner surface of said housing around said opening, is formed with a material which cannot be brazed.

7. The device according to claim 1 , wherein said at least one conductor element is formed at least partially with a protective coating.