Title:
【発明の名称】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 JP2002544514
Kind Code:
A
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.
More Like This:
| JPH0394133 | DIFFERENTIAL PRESSURE MEASURING DEVICE |
| JPH0353140 | DIFFERENTIAL PRESSURE TRANSMITTER |
| JP2005010021 | DIFFERENTIAL PRESSURE TRANSMITTER |
Inventors:
Flick, Roger, Elle.
Rad, Stanley, E. Jr.
Broden, David, A.
Rad, Stanley, E. Jr.
Broden, David, A.
Application Number:
JP2000618705A
Publication Date:
December 24, 2002
Filing Date:
May 11, 2000
Export Citation:
Assignee:
Rosemount Incorporated
International Classes:
G01L13/06; G01L9/00; G01L13/02; G01L19/04; (IPC1-7): G01L13/06; G01L13/02
Domestic Patent References:
| JPH0297643U | 1990-08-03 | |||
| JPH04502508A | 1992-05-07 | |||
| JPH04370729A | 1992-12-24 |
Foreign References:
| US3557621A | 1971-01-26 |
Attorney, Agent or Firm:
Kazuki Tanaka (2 outside)