JPS5728212A - Electromagnetic flowmeter - Google Patents

Electromagnetic flowmeter

Info

Publication number
JPS5728212A
JPS5728212A JP10267480A JP10267480A JPS5728212A JP S5728212 A JPS5728212 A JP S5728212A JP 10267480 A JP10267480 A JP 10267480A JP 10267480 A JP10267480 A JP 10267480A JP S5728212 A JPS5728212 A JP S5728212A
Authority
JP
Japan
Prior art keywords
inductance
excitation coil
amplifier
flow
outputting
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
JP10267480A
Other languages
Japanese (ja)
Inventor
Ichiu Suzuki
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric Corp
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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP10267480A priority Critical patent/JPS5728212A/en
Publication of JPS5728212A publication Critical patent/JPS5728212A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
    • G01F1/60—Circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To measure accurately only a flow speed regardless of the concentration of an included magnetic substance and composition thereof by correcting and outputting a flow signal according to a measured value of inductance of an excitation coil. CONSTITUTION:The device is constituted by an insulated conduit tube 1, an excitation coil 3 that generates a magnetic field crossing, at right angles, the flow direction of a fluid, electrodes 5a, 5b prepared in opposition to the insulated conduit tube 1 in the direction crossing, at right angles, both the flow direction of a fluid and the direction of a magnetic field, an amplifier 7 that amplifies signals from said electrodes 5a, 5b and an inductance measuring device 8 that measures inductance of the excitation coil 3. Further both outputs from the amplifier 7 and the inductance measuring device 8 are operated by a microporocesser 11, and the output from the amplifier 7 is divided by a value proportional to the inductance of the excitation coil 3, and thus by outputting the signal after dividing, a flow signal is corrected.
JP10267480A 1980-07-26 1980-07-26 Electromagnetic flowmeter Pending JPS5728212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10267480A JPS5728212A (en) 1980-07-26 1980-07-26 Electromagnetic flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10267480A JPS5728212A (en) 1980-07-26 1980-07-26 Electromagnetic flowmeter

Publications (1)

Publication Number Publication Date
JPS5728212A true JPS5728212A (en) 1982-02-15

Family

ID=14333771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10267480A Pending JPS5728212A (en) 1980-07-26 1980-07-26 Electromagnetic flowmeter

Country Status (1)

Country Link
JP (1) JPS5728212A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58198724A (en) * 1982-05-14 1983-11-18 Yokogawa Hokushin Electric Corp Converter of electromagnetic flow meter
US5351554A (en) * 1991-06-08 1994-10-04 Endress + Hauser Flowtec Ag Magnetoinductive flowmeter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58198724A (en) * 1982-05-14 1983-11-18 Yokogawa Hokushin Electric Corp Converter of electromagnetic flow meter
US5351554A (en) * 1991-06-08 1994-10-04 Endress + Hauser Flowtec Ag Magnetoinductive flowmeter

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