Patent ID: 6735845
Filing Date: 2004-05-18
Classification: G01L,Y10T

Abstract:
A method of producing a pressure sensor comprising a pressure sensor house assembly which contains a reference cavity, in which a vacuum exists, and furthermore comprising a getter capable of being thermally activated, the method comprising activating the getter by directly contacting the getter with an exterior heated body that is heated via a heat source, conducting heat from the exterior heated body, maintaining the exterior heated body in direct contact with the getter for a predetermined period of time, and removing the heat source and sealing the pressure house assembly with the exterior heated body,wherein the method further comprises: producing the pressure sensor house of substantially ceramic material having the reference cavity arranged therein and a single closing channel from a main portion of the reference cavity to a mouth at the outside, pumping air out of a room containing the pressure sensor house, so that a vacuum is obtained therein and in the reference cavity, arranging a glass joint material on a closing lid, the glass joint material being capable of being thermally activated, the arranging step being practiced by arranging the joint material in a dotted pattern on the closing lid to allow gases that come into contact with the closing lid to be let out via a slot formed at a surface of the joint material, heating the closing lid and placing the closing lid over the mouth of the closing channel, and allowing the closing lid to cool.