Patent ID: 6380840
Filing Date: 2002-04-30
Classification: G01K

Abstract:
A temperature sensor comprising a measuring resistor (1), at least two conductors (4, 5) electrically connected to the measuring resistor (1) at one end of the conductors and having outer connection contacts (8, 9) at a second end of the conductors, a plastic casing (10) serving as a primary, inner housing for the measuring resistor (1), and a plastic extrusion coating (13) serving as an outer housing for the measuring resistor (1), wherein the measuring resistor (1) comprises a surface mounted device having a resistance layer (16) situated on an electrically insulating surface of a substrate (15), wherein the plastic casing (10) comprises a temperature-stable plastic which seals the measuring resistor (1) against its surroundings, and wherein the measuring resistor (1) and plastic casing (10) are surrounded by the plastic extrusion coating (13), except that the at least two conductors (4, 5) pass gas and liquid tight through the plastic casing (10) and plastic extrusion coating (13) extending from the measuring resistor (1) to the outer connection contacts (8, 9).