JPS55126821A - Electromagnetic flow meter - Google Patents
Electromagnetic flow meterInfo
- Publication number
- JPS55126821A JPS55126821A JP3394279A JP3394279A JPS55126821A JP S55126821 A JPS55126821 A JP S55126821A JP 3394279 A JP3394279 A JP 3394279A JP 3394279 A JP3394279 A JP 3394279A JP S55126821 A JPS55126821 A JP S55126821A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnets
- electromotive force
- main
- electrodes
- opposite polarity
- 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.)
- Granted
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
PURPOSE: To obtain a miniature flow meter of simple constitution which provides accurate measurements of flow rates by compensating the temperature drift of an output voltage, by providing auxiliary permanent magnets of the opposite polarity to main permanent magnets, arranged sandwiching a pipe, at both terminal parts of the main permanent magnets.
CONSTITUTION: Along pipe 1 through which a conductive liquid such as liquid sodium flows, main permanet magnets 2a and 2b are provided so as to measure the flow rate of the conductive liquid by making use of a voltage developed between electrodes 3a and 3b. In this case, auxiliary permanent magnets 6a and 6b, and 7a and 7b of the opposite polarity to the main permanent magnets are closely arranged. Consequently, electromotive force with its level suppressed through the terminal effect of a magnetic field of an eddy current is generated at electrodes 3a and 3b. Although the suppressing power of this electromotive force decreases as a temperature rises, the intensity of the magnetic filed of the permanent magnets also decreases. For the purpose, the increment of the electromotive force through the terminal effect is set equal to the decrement of the electromotive force by the permanent magnets, so that the constant electromotive force can be obtained without reference to variation in temperature.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3394279A JPS597933B2 (en) | 1979-03-23 | 1979-03-23 | electromagnetic flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3394279A JPS597933B2 (en) | 1979-03-23 | 1979-03-23 | electromagnetic flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55126821A true JPS55126821A (en) | 1980-10-01 |
| JPS597933B2 JPS597933B2 (en) | 1984-02-21 |
Family
ID=12400553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3394279A Expired JPS597933B2 (en) | 1979-03-23 | 1979-03-23 | electromagnetic flow meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS597933B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509824A (en) * | 2016-01-25 | 2016-04-20 | 中国原子能科学研究院 | Permanent-magnetic liquid metal flowmeter |
-
1979
- 1979-03-23 JP JP3394279A patent/JPS597933B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509824A (en) * | 2016-01-25 | 2016-04-20 | 中国原子能科学研究院 | Permanent-magnetic liquid metal flowmeter |
| CN105509824B (en) * | 2016-01-25 | 2018-10-09 | 中国原子能科学研究院 | A kind of magneto flow of liquid metal gauge |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS597933B2 (en) | 1984-02-21 |
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