TEMPERATURFÜHLER UND VERFAHREN ZUR HERSTELLUNG VON TEMPERATURFÜHLERELEMENTEN

摘要

PCT No. PCT/DE91/00601 Sec. 371 Date Feb. 12, 1993 Sec. 102(e) Date Feb. 12, 1993 PCT Filed Jul. 25, 1991 PCT Pub. No. WO92/03711 PCT Pub. Date Mar. 5, 1992.A positive temperature coefficient temperature sensor for use in exhaust-gas systems of internal-combustion engines includes a sensor element having a multilayer laminate composite structure with a positive temperature coefficient thermistor, formed by at least two resistor tracks arranged one above another and electrically insulated from one another. One of the layers of the multilayer structure is an insulating ceramic base film, and a first one of the at least two resistor tracks, with a supply lead, is printed onto the insulating ceramic base film. A second one of the at least two resistor tracks is disposed separately on the insulating ceramic base film by means of at least one insulating layer printed above the first one of the at least two resistor tracks. The at least two resistor tracks disposed one above another are connected by a land guided through the at least one insulating layer. A further film is subsequently laminated on the surface of the insulating ceramic base film printed with the at least two resistor tracks. The at least two resistor tracks are hermetically sealed by the laminate composite structure with respect to a gas being measured and environmental air.