Patent ID: 7480989
Filing Date: 2009-01-27
Classification: G01L,Y10T

Abstract:
1. A method for manufacturing a pressure detector comprising the steps of: preparing a first member including a stem and a sensing portion for outputting an electric signal corresponding to a pressure; preparing a second member including a pressure receiving diaphragm; preparing a pressure transmission member for transmitting the pressure received by the pressure receiving diaphragm to the sensing portion; arranging the pressure transmission member in a hollow portion of the stem; inserting the pressure transmission member in the stem between the sensing portion and the pressure receiving diaphragm; applying a preliminary load to the sensing portion through the pressure transmission member from the pressure receiving diaphragm; connecting the first member and the second member under the preliminary load; monitoring the electric signal outputted from the sensing portion, the electric signal corresponding to the preliminary load applied to the sensing portion; and determining the preliminary load on the basis of the electric signal monitored in the step of monitoring, wherein the stem includes a pressure transmission diaphragm, in the step of preparing the first member, the sensing portion is integrally bonded to the pressure transmission diaphragm in such a manner that the sensing portion is disposed outside of the hollow portion, and in the step of inserting the pressure transmission member in the stem, the first member is arranged on the second member.