Title:
圧力センサ、圧力トランスミッタおよび差圧測定における誤差補償方法
Document Type and Number:
Japanese Patent JP4860043
Kind Code:
B2
Abstract:
The cavities in a cell casing have silicone oil adapted to receive pressure and exert corresponding force on diaphragm. The diaphragm is deflected based on difference in received pressure. Electrodes defining variable capacitors are coupled to center and edges of interior wall and coupled to conductive portion of diaphragm. The cell casing has interior walls with edge surrounding center region and defining a cavity, portioned by deflectable diaphragm arranged between interior walls. Independent claims are also included for the following: (a) process pressure transmitter; (b) differential pressure measuring method; (c) error compensating method in measuring differential pressure.
Inventors:
Flick, Roger, Elle.
Rad, Stanley, E. Jr.
Broden, David, A.
Rad, Stanley, E. Jr.
Broden, David, A.
Application Number:
JP2000618705A
Publication Date:
January 25, 2012
Filing Date:
May 11, 2000
Export Citation:
Assignee:
Rosemount Incorporated
International Classes:
G01L13/06; G01L9/00; G01L13/02; G01L19/04
Domestic Patent References:
JPH0297643A | 1990-04-10 | |||
JPH04370729A | 1992-12-24 |
Foreign References:
US3557621A | 1971-01-26 |
Attorney, Agent or Firm:
Kaori Tanaka
Michito Hiraki
Sanji Tanabe
Michito Hiraki
Sanji Tanabe