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JPS5563716A - Electromagnetic flow-meter - Google Patents

Electromagnetic flow-meter

Info

Publication number
JPS5563716A
JPS5563716A JP13702578A JP13702578A JPS5563716A JP S5563716 A JPS5563716 A JP S5563716A JP 13702578 A JP13702578 A JP 13702578A JP 13702578 A JP13702578 A JP 13702578A JP S5563716 A JPS5563716 A JP S5563716A
Authority
JP
Japan
Prior art keywords
exciting
signals
coils
thermal
electromotive force
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
Application number
JP13702578A
Other languages
Japanese (ja)
Inventor
Ichiro Wada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13702578A priority Critical patent/JPS5563716A/en
Publication of JPS5563716A publication Critical patent/JPS5563716A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To eliminate effect due to thermal, electromotive force, by totally using electric means without employing mechanical constitution, in this electromagnetic flow-meter for a high temperature conductive fluid.
CONSTITUTION: Exciting currents are supplied to exciting coils 13a, 13b through an exciting signal switching appliance 15 for changing over said coils in series and in parallel from an exciting power source 14. An output signal switching appliance 16 is interlocked with the exciting signal switching appliance 15, selects hold circuits 17a, 17b and holds the outut signals of a pair of electrodes 11a, 11b. Hold signals Sa in the case when the coils are connected in series and hold signals Sb in the case when thdy are connected in parallel are shown in formulae Sa=2AX+B and Sb=AX+B (where, A: a constant regarding exciting currents, X: a flow rate, B: thermal, electromotive force), and are fixed in change-over measurement for a short time. Original flow-rate signals AX that thermal, electromotive force B is removed are obtained by operating Sa-Sb by means of a computing element 18.
COPYRIGHT: (C)1980,JPO&Japio
JP13702578A 1978-11-07 1978-11-07 Electromagnetic flow-meter Pending JPS5563716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13702578A JPS5563716A (en) 1978-11-07 1978-11-07 Electromagnetic flow-meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13702578A JPS5563716A (en) 1978-11-07 1978-11-07 Electromagnetic flow-meter

Publications (1)

Publication Number Publication Date
JPS5563716A true JPS5563716A (en) 1980-05-14

Family

ID=15189073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13702578A Pending JPS5563716A (en) 1978-11-07 1978-11-07 Electromagnetic flow-meter

Country Status (1)

Country Link
JP (1) JPS5563716A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147220A (en) * 1983-02-14 1984-08-23 Sukegawa Denki Kogyo Kk Thermoelectric power compensating apparatus of electromagnetic flow meter for molten metal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147220A (en) * 1983-02-14 1984-08-23 Sukegawa Denki Kogyo Kk Thermoelectric power compensating apparatus of electromagnetic flow meter for molten metal

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