JPS562506A - Electromagnetic flowmeter - Google Patents
Electromagnetic flowmeterInfo
- Publication number
- JPS562506A JPS562506A JP7804779A JP7804779A JPS562506A JP S562506 A JPS562506 A JP S562506A JP 7804779 A JP7804779 A JP 7804779A JP 7804779 A JP7804779 A JP 7804779A JP S562506 A JPS562506 A JP S562506A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- intensity
- poles
- resistance
- gap
- 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 make it possible to obtain stable magnetic-field intensity by freely reducing the magnetic resistance of a magnetic circuit according to a decrease in magnetomotive force due to the demagnetizing of a permanent magnet.
CONSTITUTION: Process fluid 2 protects permanent magnet 1 from heating and heat insulator 5 is provided for heat insulation. Magnetic fluxes generated from the N poles of magnets 1, arranged sandwiching them, cross process piping 4 at right angles and reach the opposite S poles and at the same time, electromotive force proportional to the density of the magnetic fluxes is induced in fluid 2 and detected by electrode 3 as an EMF output value. Those magnetic fluxes form a magnetic circuit by passing through magnetic materials 6, coupled with magnets 1, and air gap 11. The length of the gap 11 is varied to vary composite magnetic resistance R of the magnetic circuit. Further, the magnetic intensity becomes measurable at any time by magnetic intensity measurer 9 provided at a random position of magnetic pole 3. When a decrease in magnetic intensity is detected, the length of gap 11 is shortened and resistance R is reduced, so that magnetic intensity between magnetic poles 3 can be stabilized.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7804779A JPS562506A (en) | 1979-06-22 | 1979-06-22 | Electromagnetic flowmeter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7804779A JPS562506A (en) | 1979-06-22 | 1979-06-22 | Electromagnetic flowmeter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS562506A true JPS562506A (en) | 1981-01-12 |
Family
ID=13650929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7804779A Pending JPS562506A (en) | 1979-06-22 | 1979-06-22 | Electromagnetic flowmeter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS562506A (en) |
-
1979
- 1979-06-22 JP JP7804779A patent/JPS562506A/en active Pending
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