JPS5629120A - Flow measuring method - Google Patents
Flow measuring methodInfo
- Publication number
- JPS5629120A JPS5629120A JP10540279A JP10540279A JPS5629120A JP S5629120 A JPS5629120 A JP S5629120A JP 10540279 A JP10540279 A JP 10540279A JP 10540279 A JP10540279 A JP 10540279A JP S5629120 A JPS5629120 A JP S5629120A
- Authority
- JP
- Japan
- Prior art keywords
- flow
- signal
- fluid
- operation unit
- orifice
- 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 Volume Flow (AREA)
Abstract
PURPOSE: To increase the measuring accuracy at low flow area, by the correction based on a given relation between the flow coefficient and flow to the flow measuring values obtained from the pressure difference before and after the orifice, liquid pressure and temperature.
CONSTITUTION: The pressure difference ΔP before and after the orifice 1 of the fluid tube system 2, fluid pressure P1 at the primary side, and fluid temperature T1 are respectively detected and converted into electric signal and input to the density correction operation unit 7, and after correcting the fluid density, the signal is operated at the square root operator 8 and flow signal is picked up. Further, the signal is made for the corrective operation of flow coefficient α at the function operation unit 10, and linear flow signal S is output with the α average signal processing at the first order delay element operation unit 11. Accordingly, since the flow coefficient giving greater result of measurement can be corrected according to flow, the measurement up to low flow can be made accurately.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10540279A JPS5629120A (en) | 1979-08-17 | 1979-08-17 | Flow measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10540279A JPS5629120A (en) | 1979-08-17 | 1979-08-17 | Flow measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5629120A true JPS5629120A (en) | 1981-03-23 |
Family
ID=14406623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10540279A Pending JPS5629120A (en) | 1979-08-17 | 1979-08-17 | Flow measuring method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5629120A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62263416A (en) * | 1986-05-10 | 1987-11-16 | Yokogawa Electric Corp | Differential pressure type flow rate measuring system |
| JPS6415305A (en) * | 1987-07-08 | 1989-01-19 | Nippon Kokan Kk | Apparatus for producing metal powder |
| CN104807508A (en) * | 2015-04-13 | 2015-07-29 | 浙江大学 | Digital display flow meter for experiment teaching based on piezometer tube display and measuring method thereof |
-
1979
- 1979-08-17 JP JP10540279A patent/JPS5629120A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62263416A (en) * | 1986-05-10 | 1987-11-16 | Yokogawa Electric Corp | Differential pressure type flow rate measuring system |
| JPH0476565B2 (en) * | 1986-05-10 | 1992-12-04 | Yokogawa Electric Corp | |
| JPS6415305A (en) * | 1987-07-08 | 1989-01-19 | Nippon Kokan Kk | Apparatus for producing metal powder |
| CN104807508A (en) * | 2015-04-13 | 2015-07-29 | 浙江大学 | Digital display flow meter for experiment teaching based on piezometer tube display and measuring method thereof |
| CN104807508B (en) * | 2015-04-13 | 2018-01-05 | 浙江大学 | A kind of experimental teaching is with the digital indication flow meter and measuring method shown with pressure-measuring pipe |
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