Pressure sensor and method for producing a pressure sensor

摘要

A pressure sensor (1) is specified, comprising a housing (2), a membrane (3), which forms with the housing (2) a chamber (4) closed off toward the outside, and a filling opening (6) for filling the chamber (4) with a fluid medium (5). The filling opening (6) is closed by means of a soldering or welding closure (7, 8). Furthermore, a method for producing a pressure sensor (1) is specified, wherein a housing (2), which together with a membrane (3) forms a chamber (4), is provided, the chamber (4) is filled with a fluid medium (5) through a filling opening (6), and the filling opening (6) is subsequently closed by means of soldering or welding.

主权项

1. A method for producing a pressure sensor, comprising the following steps:
providing a housing, which together with a membrane forms a chamber; filling the chamber with a fluid medium through a filling opening in the housing; and closing the filling opening by soldering or welding, wherein
the filling opening is closed by a closure part,the closure part comprises a metal plate,the closure part is soldered or welded to the housing in the region around the filling opening,the closure part is arranged on the housing but does not protrude into the filling opening such that the volume of the fluid medium inside the housing is not changed when the filling opening is closed,the pressure sensor comprises a sensor element,the membrane forms an outer side of the pressure sensor such that an outer pressure directly acts on the membrane, andthe outer pressure is transferred via the fluid medium on the sensor element.