초록 ▼

Media compatible packages for pressure sensing devices include molded polymeric housings and diaphragms which mount and isolate pressure sensing devices in operative contact with any type of corrosive or non-corrosive media for pressure measurement. The various pressure sensor package housings inclu

Media compatible packages for pressure sensing devices include molded polymeric housings and diaphragms which mount and isolate pressure sensing devices in operative contact with any type of corrosive or non-corrosive media for pressure measurement. The various pressure sensor package housings include a main cavity in which a pressure sensor is mounted, a polymeric diaphragm bonded to the housing within the main cavity, at least one media port which leads to a pressure port on one side of the diaphragm, and a pressure transfer cavity on an opposite side of the diaphragm in which a pressure sensor is located. A fill port through a wall of the housing between the diaphragm and the pressure sensor allows the pressure transfer cavity to be filled with a pressure transfer medium such as oil and then sealed, without introducing any excess pressure. The use of bondable polymers to form the housing and thin film diaphragms provides excellent media compatibility for pressure measurements in corrosive environments. Differential dual port packages having a media conduit and diaphragm on opposite sides of a single sensor are also provided. Internal walls of the connectable halves of the pressure sensor housing are configured to capture, position and hold a pressure sensing device within a main cavity of the housing, and to form at least one pressure transfer cavity between a pressure sensing device and a diaphragm.

대표청구항 ▼

[ What is claimed is:] [1.] A media compatible pressure sensor package for receiving a pressure sensing device in operable contact with a media from which pressure is to be measured while isolating the pressure sensing device from direct physical contact with the media, the package comprising:a hous

[ What is claimed is:] [1.] A media compatible pressure sensor package for receiving a pressure sensing device in operable contact with a media from which pressure is to be measured while isolating the pressure sensing device from direct physical contact with the media, the package comprising:a housing adapted for attachment to a base on which a pressure sensing device is mounted such that the housing and the base form a main cavity located between said base and said housing, said housing having a media port which extends from the main cavity;a diaphragm in the main cavity;a pressure port in the main cavity between the diaphragm and the media port; anda fill port extending to said main cavity.