JPH0297643U - - Google Patents
Info
- Publication number
- JPH0297643U JPH0297643U JP625589U JP625589U JPH0297643U JP H0297643 U JPH0297643 U JP H0297643U JP 625589 U JP625589 U JP 625589U JP 625589 U JP625589 U JP 625589U JP H0297643 U JPH0297643 U JP H0297643U
- Authority
- JP
- Japan
- Prior art keywords
- differential pressure
- detection electrode
- temperature
- pressure detection
- holes
- 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
- 238000001514 detection method Methods 0.000 claims description 13
- 239000012212 insulator Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Description
第１図は本考案の１実施例の要部の構成を示す
構成図、第２図は第１図における差圧検出電極と
温度検出電極の近傍を拡大した拡大図、第３図は
本考案の他の実施例の要部を示す構成図、第４図
は従来の差圧伝送器の検出部の構成を示す縦断面
図である。
１０，１１……カバーフランジ、１４，１５…
…封液、１６，１７……バツクアツププレート、
２０……センターダイアフラム、２５，２６……
シールダイアフラム、２７，２８……環状ダイア
フラム、３４……差圧センサ、３５……センサハ
ウジング、４０……メインダイアフラム、５１…
…差圧センサ、５２，５３……保持リング、５４
……メインダイアフラム、５５，５６……絶縁体
、６１，６２……差圧検出電極、６３，６４……
温度検出電極、７２……切替回路、７３……温度
測定回路、７４……差圧測定回路、７５……温度
補正回路。
Figure 1 is a block diagram showing the configuration of the main parts of one embodiment of the present invention, Figure 2 is an enlarged view of the vicinity of the differential pressure detection electrode and temperature detection electrode in Figure 1, and Figure 3 is the invention FIG. 4 is a longitudinal cross-sectional view showing the configuration of a detection section of a conventional differential pressure transmitter. 10, 11...Cover flange, 14, 15...
... Sealing liquid, 16, 17 ... Backup plate,
20... Center diaphragm, 25, 26...
Seal diaphragm, 27, 28... Annular diaphragm, 34... Differential pressure sensor, 35... Sensor housing, 40... Main diaphragm, 51...
... Differential pressure sensor, 52, 53 ... Retaining ring, 54
... Main diaphragm, 55, 56 ... Insulator, 61, 62 ... Differential pressure detection electrode, 63, 64 ...
Temperature detection electrode, 72...Switching circuit, 73...Temperature measurement circuit, 74...Differential pressure measurement circuit, 75...Temperature correction circuit.
Claims (1)
れこれ等の内面に差圧検出電極が形成されると共
にこれ等の内面の中央に導電性のメインダイアフ
ラムがその周辺で固定され前記絶縁体を貫通して
貫通孔が開けられると共にこれ等の内面側には封
液が封入されこの封液を介して前記貫通孔から高
圧と低圧の測定圧力が導入されてこれ等の差圧を
測定する差圧伝送器において、前記内面上であつ
て前記差圧検出電極の外部にこの差圧検出電極と
は間隔を保つて温度検出電極を形成し、この温度
検出電極と前記差圧検出電極とに発生する信号を
用いて所定の演算を実行することにより温度信号
を導出し、この温度信号により前記差圧検出電極
に発生する差圧信号に対して温度補正をすること
を特徴とする差圧伝送器。 The inner surfaces of the left and right insulators are each curved, and differential pressure detection electrodes are formed on these inner surfaces, and a conductive main diaphragm is fixed around the center of these inner surfaces and penetrates through the insulators. Through-holes are opened and a sealing liquid is sealed on the inner surface of these holes, and high and low measurement pressures are introduced from the through-holes through this sealing liquid to measure the differential pressure. In the transmitter, a temperature detection electrode is formed on the inner surface and outside of the differential pressure detection electrode at a distance from the differential pressure detection electrode, and a temperature detection electrode is formed between the temperature detection electrode and the differential pressure detection electrode. A differential pressure transmitter, characterized in that a temperature signal is derived by executing a predetermined calculation using the signal, and the differential pressure signal generated at the differential pressure detection electrode is subjected to temperature correction using the temperature signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP625589U JPH0297643U (en) | 1989-01-23 | 1989-01-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP625589U JPH0297643U (en) | 1989-01-23 | 1989-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0297643U true JPH0297643U (en) | 1990-08-03 |
Family
ID=31210332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP625589U Pending JPH0297643U (en) | 1989-01-23 | 1989-01-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0297643U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002544514A (en) * | 1999-05-14 | 2002-12-24 | ローズマウント インコーポレイテッド | Error compensation method in pressure sensor, pressure transmitter and differential pressure measurement |
| JP2014106184A (en) * | 2012-11-29 | 2014-06-09 | Azbil Corp | Differential pressure sensor |
-
1989
- 1989-01-23 JP JP625589U patent/JPH0297643U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002544514A (en) * | 1999-05-14 | 2002-12-24 | ローズマウント インコーポレイテッド | Error compensation method in pressure sensor, pressure transmitter and differential pressure measurement |
| JP2014106184A (en) * | 2012-11-29 | 2014-06-09 | Azbil Corp | Differential pressure sensor |
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