JPS5537966A - Pressure measuring instrument - Google Patents
Pressure measuring instrumentInfo
- Publication number
- JPS5537966A JPS5537966A JP11146478A JP11146478A JPS5537966A JP S5537966 A JPS5537966 A JP S5537966A JP 11146478 A JP11146478 A JP 11146478A JP 11146478 A JP11146478 A JP 11146478A JP S5537966 A JPS5537966 A JP S5537966A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- pressure measuring
- variation
- measuring instrument
- wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
PURPOSE: To make it possible to obtain a measured value with high precision under no influence of thermal contraction of an insulating solution due to variation in ambient temperature, by forming either one of diaphragms of a conventional pressure measuring instrument in a wave shape.
CONSTITUTION: At both sides of external cylinder 22, this pressure measuring instrument is hermetically sealed by discs 27 and 43 with a penetrating hole. On diaphragm pedestal 27, diaphragm 28 is welded and outside of cradle board 43, wave-shaped diaphragm 44 is welded. Insulator 33 is held at a fixed distance depending upon the height of flanges formed on diaphragm pedestal 27 and reference electrode plate 38, and also provided with electrodes 30a and 30B of metal foil. Reference electrode plate 38 is pushed by plate spring 38 from cradle board 43. Measured pressure applied to both the diaphragms operate on the both through the through hole and the insulating liquid filling external cylinder 22. Then, a difference in pressure between the both can be found from variation in capacitor value between pressure measuring diaphragm 28 and electrode 30A and through the operation of wave-shaped diaphragm 44, a measured-value error is never caused by variation in temperature.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11146478A JPS5537966A (en) | 1978-09-11 | 1978-09-11 | Pressure measuring instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11146478A JPS5537966A (en) | 1978-09-11 | 1978-09-11 | Pressure measuring instrument |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5537966A true JPS5537966A (en) | 1980-03-17 |
Family
ID=14561893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11146478A Pending JPS5537966A (en) | 1978-09-11 | 1978-09-11 | Pressure measuring instrument |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5537966A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03175330A (en) * | 1989-09-18 | 1991-07-30 | Fuji Electric Co Ltd | Apparatus for detecting differential pressure |
-
1978
- 1978-09-11 JP JP11146478A patent/JPS5537966A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03175330A (en) * | 1989-09-18 | 1991-07-30 | Fuji Electric Co Ltd | Apparatus for detecting differential pressure |
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