JPS55106316A - Electromagnetic flow meter - Google Patents
Electromagnetic flow meterInfo
- Publication number
- JPS55106316A JPS55106316A JP1391679A JP1391679A JPS55106316A JP S55106316 A JPS55106316 A JP S55106316A JP 1391679 A JP1391679 A JP 1391679A JP 1391679 A JP1391679 A JP 1391679A JP S55106316 A JPS55106316 A JP S55106316A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- exciting
- poles
- magnetic flux
- magnetic
- 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
- 230000004907 flux Effects 0.000 abstract 3
- 238000012935 Averaging Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000005284 excitation Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000005070 sampling Methods 0.000 abstract 1
Landscapes
- Measuring Volume Flow (AREA)
Abstract
PURPOSE: To realize a flow meter which features the reduced effect of the zero-point fluctuation due to the electrochemical function as well as the reduced amount of power consumption, by applying the pulse which features the small pulse duration with the polarities changing alternately to the exciting coil of the magnetic circuit.
CONSTITUTION: A pair of electrodes 2a and 2b are provided in tube path 1 of the fluid, and exciting coils 5a and 5b are mounted to magnetic poles 4a and 4b to give excitation to magnetic circuit 4. The pulse of the small duration featuring the polarities changing alternately is applied to coils 5a and 5b via exciting device 6 and controller 7. Thus nearly the fixed residual magnetic flux is caused following the magnetic flux changing in the form of a peak between poles 4a and 4b. In that case, the voltage occurring between electrodes 2a and 2b is proportional to the product of the magnetic flux and the flowing speed within path 1. And then the sampling is given to the output between poles 2a and 2b along with the time averaging by avoiding the period during which the exciting pulse is applied with large voltage fluctuation. As a result, the zero-point fluctuation due to the electrochemical function is eliminated, thus ensuring the flow amount measurement with the reduced amount of power consumption.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1391679A JPS597930B2 (en) | 1979-02-08 | 1979-02-08 | electromagnetic flow meter |
| US06/175,611 US4409846A (en) | 1979-02-08 | 1980-08-06 | Electromagnetic flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1391679A JPS597930B2 (en) | 1979-02-08 | 1979-02-08 | electromagnetic flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55106316A true JPS55106316A (en) | 1980-08-15 |
| JPS597930B2 JPS597930B2 (en) | 1984-02-21 |
Family
ID=11846485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1391679A Expired JPS597930B2 (en) | 1979-02-08 | 1979-02-08 | electromagnetic flow meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS597930B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57134629U (en) * | 1981-02-13 | 1982-08-21 | ||
| JPS6383613A (en) * | 1986-09-27 | 1988-04-14 | Shimadzu Corp | Electromagnetic flow meter |
| US7293468B2 (en) | 2004-04-08 | 2007-11-13 | Yokogawa Electric Corporation | Electromagnetic flowmeter |
-
1979
- 1979-02-08 JP JP1391679A patent/JPS597930B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57134629U (en) * | 1981-02-13 | 1982-08-21 | ||
| JPS6383613A (en) * | 1986-09-27 | 1988-04-14 | Shimadzu Corp | Electromagnetic flow meter |
| US7293468B2 (en) | 2004-04-08 | 2007-11-13 | Yokogawa Electric Corporation | Electromagnetic flowmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS597930B2 (en) | 1984-02-21 |
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