JPH0247535U - - Google Patents
Info
- Publication number
- JPH0247535U JPH0247535U JP12509888U JP12509888U JPH0247535U JP H0247535 U JPH0247535 U JP H0247535U JP 12509888 U JP12509888 U JP 12509888U JP 12509888 U JP12509888 U JP 12509888U JP H0247535 U JPH0247535 U JP H0247535U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- absolute
- pressure side
- differential
- transmitter
- 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
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
- Measuring Fluid Pressure (AREA)
Description
第１図はこの考案の一実施例を示すブロツク図
、第２図はその動作を説明するためのフローチヤ
ート、第３図はこの装置に用いられる圧力センサ
の断面図、第４図はその側面図、第５図、第６図
は従来システムのブロツク図である。
２５……差圧発信器、２６……ＳＦＣ、２７…
…ジヤンクシヨンボツクス、２８……受信計、５
０……気体流路、５１……絞り、５７，５８……
バリヤダイヤフラム、５９……内機、６０……セ
ンタダイヤフラム、６１……差圧センサ、６２…
…静圧センサ、６３……基準圧室、６４，６５…
…連通管。
Fig. 1 is a block diagram showing an embodiment of this device, Fig. 2 is a flowchart for explaining its operation, Fig. 3 is a sectional view of a pressure sensor used in this device, and Fig. 4 is a side view thereof. 5 and 6 are block diagrams of conventional systems. 25...Differential pressure transmitter, 26...SFC, 27...
...Jankusion Box, 28...Receiver, 5
0... Gas flow path, 51... Throttle, 57, 58...
Barrier diaphragm, 59...inner unit, 60...center diaphragm, 61...differential pressure sensor, 62...
...Static pressure sensor, 63...Reference pressure chamber, 64, 65...
...Communication pipe.
Claims (1)
質量流量を測定するとき圧力変動による流体密度
変化の補正を行い質量流量を表示器に表示する信
号を出力する圧力補正形差圧発信器において、 高圧側または低圧側圧力のいずれか一方の絶対
圧力を測定する絶対圧力センサと、高圧側および
低圧側の両圧力の差圧を測定する差圧センサとを
一体に形成した圧力センサと、 表示圧力をゲージ圧力と絶対圧力とを選択する
手段と、 測定された絶対圧力からゲージ圧力に変換する
変換器とを備えたことを特徴とする圧力補正形差
圧発信器。[Claims for Utility Model Registration] When mass flow rate is measured by measuring the pressure on the high pressure side and low pressure side using an aperture, fluid density changes due to pressure fluctuations are corrected and a signal is output to display the mass flow rate on a display. In a pressure-compensated differential pressure transmitter, an absolute pressure sensor measures the absolute pressure on either the high pressure side or the low pressure side, and a differential pressure sensor measures the differential pressure between both the high pressure side and the low pressure side. A pressure-compensated differential pressure system comprising an integrally formed pressure sensor, means for selecting a displayed pressure between gauge pressure and absolute pressure, and a converter for converting the measured absolute pressure into gauge pressure. Transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12509888U JPH0247535U (en) | 1988-09-27 | 1988-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12509888U JPH0247535U (en) | 1988-09-27 | 1988-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0247535U true JPH0247535U (en) | 1990-03-30 |
Family
ID=31375398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12509888U Pending JPH0247535U (en) | 1988-09-27 | 1988-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0247535U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5562331A (en) * | 1978-11-06 | 1980-05-10 | Hitachi Ltd | Absolute pressure reference type pressure sensor |
| JPS638524A (en) * | 1986-06-30 | 1988-01-14 | Yamatake Honeywell Co Ltd | Differential pressure transmitter |
-
1988
- 1988-09-27 JP JP12509888U patent/JPH0247535U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5562331A (en) * | 1978-11-06 | 1980-05-10 | Hitachi Ltd | Absolute pressure reference type pressure sensor |
| JPS638524A (en) * | 1986-06-30 | 1988-01-14 | Yamatake Honeywell Co Ltd | Differential pressure transmitter |
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