Title:
【発明の名称】圧力検知装置用の汎用媒体パッケージ
Document Type and Number:
Japanese Patent JP2001527210
Kind Code:
A
Abstract:
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.
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Inventors:
Bang christopher
Nagi Michael El
Young Ziaofeng
Just Marcus S
Nagi Michael El
Young Ziaofeng
Just Marcus S
Application Number:
JP2000525739A
Publication Date:
December 25, 2001
Filing Date:
December 22, 1998
Export Citation:
Assignee:
Rosemount Aerospace Incorporated
International Classes:
G01L9/00; G01L9/04; G01L19/06; (IPC1-7): G01L9/04
Attorney, Agent or Firm:
Toshiaki Hamada