Title:
PROCESS PRESSURE TRANSMITTER WITH POLYMER SEAL
Document Type and Number:
WIPO Patent Application WO/2018/058487
Kind Code:
A1
Abstract:
A process pressure transmitter system includes a process pressure transmitter housing (14) and a process pressure sensor (28) in the process pressure transmitter housing (14). A metal flange (17) is configured to mount to a process vessel (10) which carries a process fluid (16). An isolation diaphragm (25) attaches to the metal flange (17) and is exposed to the process fluid (16) through an opening in the process vessel (10). The isolation diaphragm (25)comprises a polymer diaphragm bonded to a metal face of the metal flange (17). A capillary passageway carries a fill fluid from the isolation diaphragm to thereby convey a process pressure to the pressure sensor (28).
Inventors:
LI BAOGANG (CN)
Application Number:
PCT/CN2016/100974
Publication Date:
April 05, 2018
Filing Date:
September 30, 2016
Export Citation:
Assignee:
ROSEMOUNT INC (US)
International Classes:
G01L19/14; G01L9/00
Foreign References:
| CN105203252A | 2015-12-30 | |||
| US20070241916A1 | 2007-10-18 | |||
| CN101495846A | 2009-07-29 | |||
| EP0940664A1 | 1999-09-08 | |||
| US4735090A | 1988-04-05 | |||
| CN1439094A | 2003-08-27 |
Other References:
See also references of EP 3504527A4
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)
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