JPS63181838U - - Google Patents
Info
- Publication number
- JPS63181838U JPS63181838U JP7081787U JP7081787U JPS63181838U JP S63181838 U JPS63181838 U JP S63181838U JP 7081787 U JP7081787 U JP 7081787U JP 7081787 U JP7081787 U JP 7081787U JP S63181838 U JPS63181838 U JP S63181838U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- fixed electrode
- differential pressure
- sensitive diaphragm
- metal oxide
- 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
- 239000007788 liquid Substances 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims 1
- 239000010419 fine particle Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Description
第１図は本考案の１実施例を示す縦断面図、第
２図は第１図における封液の実効誘電率と金属酸
化物の分散割合いを示す特性図、第３図は従来の
差圧・圧力伝送器の構成を示す構成図、第４図は
第３図における検出部の動作を説明する説明図、
第５図は第３図における伝送部の構成を示すブロ
ツク図、第６図は浮遊容量を低減する従来の検出
部の構成を示す縦断面図である。
１０，３２…ボデイ、１１…感圧ダイアフラム
、１２，１３…接液ダイアフラム、１４，１５…
固定電極、１６，１７…封液室、１８，１９，３
３，３４…封液、２０，３５…検出部、２１…伝
送部。
Fig. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, Fig. 2 is a characteristic diagram showing the effective dielectric constant of the sealing liquid and the dispersion ratio of metal oxide in Fig. 1, and Fig. 3 is the difference between the conventional A configuration diagram showing the configuration of the pressure/pressure transmitter, FIG. 4 is an explanatory diagram explaining the operation of the detection section in FIG. 3,
FIG. 5 is a block diagram showing the configuration of the transmission section in FIG. 3, and FIG. 6 is a longitudinal sectional view showing the configuration of a conventional detection section for reducing stray capacitance. 10, 32... Body, 11... Pressure sensitive diaphragm, 12, 13... Liquid diaphragm, 14, 15...
Fixed electrode, 16, 17...Sealing liquid chamber, 18, 19, 3
3, 34... Sealing liquid, 20, 35... Detection section, 21... Transmission section.
Claims (1)
と感圧ダイアフラムとのあいだの静電容量の変化
として検出する差圧・圧力伝送器において、前記
固定電極と感圧ダイアフラムとを含む封液室に高
誘電率の金属酸化物の微粒子をオイル中に分散さ
せた封入液を封入したことを特徴とする差圧・圧
力伝送器。 In a differential pressure/pressure transmitter that detects differential pressure or displacement caused by pressure as a change in capacitance between a fixed electrode and a pressure-sensitive diaphragm, a sealed liquid chamber containing the fixed electrode and the pressure-sensitive diaphragm is A differential pressure/pressure transmitter characterized by being filled with a liquid in which fine particles of a metal oxide with a high dielectric constant are dispersed in oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7081787U JPS63181838U (en) | 1987-05-12 | 1987-05-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7081787U JPS63181838U (en) | 1987-05-12 | 1987-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63181838U true JPS63181838U (en) | 1988-11-24 |
Family
ID=30912798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7081787U Pending JPS63181838U (en) | 1987-05-12 | 1987-05-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63181838U (en) |
-
1987
- 1987-05-12 JP JP7081787U patent/JPS63181838U/ja active Pending
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