JPS5523443A - Flow-rate measuring method by electromagnetic flow meter - Google Patents
Flow-rate measuring method by electromagnetic flow meterInfo
- Publication number
- JPS5523443A JPS5523443A JP9615878A JP9615878A JPS5523443A JP S5523443 A JPS5523443 A JP S5523443A JP 9615878 A JP9615878 A JP 9615878A JP 9615878 A JP9615878 A JP 9615878A JP S5523443 A JPS5523443 A JP S5523443A
- Authority
- JP
- Japan
- Prior art keywords
- flow meter
- electromagnetic flow
- alternating
- rms
- current component
- 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
Abstract
PURPOSE: To make it possible to detect and calibrate easily the aging variation of an electromagnetic flow meter, by supervising RMS of a detection output voltage developed by the electromagnetic flow meter.
CONSTITUTION: When liquid metal is flowing at mean speed (u) per hour, providing magnetic field B perpendicular to the flow direction in electromagnetic flow meter 100 develops electromotive force across electrodes 1 and 2. The electromotive force is amplified by amplifier 3 and then inputted to filter 4, which outputs only the alternating-current component. On receiving the alternating-current component, RMS arithmetic unit 5 applies a voltage, in proportion to RMS of the alternating- current component, to indicator 6, which indicates the flow rate or mean flow speed of the liquid metal. On the basis of this indication value, the actual measurement value is calibrated, so that the real measurement value can be detected according to the state of the electromagnetic flow meter.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9615878A JPS5523443A (en) | 1978-08-09 | 1978-08-09 | Flow-rate measuring method by electromagnetic flow meter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9615878A JPS5523443A (en) | 1978-08-09 | 1978-08-09 | Flow-rate measuring method by electromagnetic flow meter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5523443A true JPS5523443A (en) | 1980-02-19 |
Family
ID=14157542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9615878A Pending JPS5523443A (en) | 1978-08-09 | 1978-08-09 | Flow-rate measuring method by electromagnetic flow meter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5523443A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4918973A (en) * | 1988-03-18 | 1990-04-24 | Great Plains Industries, Inc. | Apparatus and method for calibrating a measuring device |
US5012667A (en) * | 1988-03-18 | 1991-05-07 | Great Plains Industries, Inc. | Apparatus and method for calibrating a measuring device |
CN110313140A (en) * | 2017-02-28 | 2019-10-08 | 三菱电机株式会社 | Wireless communication device and wireless communications method |
-
1978
- 1978-08-09 JP JP9615878A patent/JPS5523443A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4918973A (en) * | 1988-03-18 | 1990-04-24 | Great Plains Industries, Inc. | Apparatus and method for calibrating a measuring device |
US5012667A (en) * | 1988-03-18 | 1991-05-07 | Great Plains Industries, Inc. | Apparatus and method for calibrating a measuring device |
CN110313140A (en) * | 2017-02-28 | 2019-10-08 | 三菱电机株式会社 | Wireless communication device and wireless communications method |
DE112017006914T5 (en) | 2017-02-28 | 2019-10-10 | Mitsubishi Electric Corporation | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD |
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