CN1005927B - 电磁式流量计用变换器 - Google Patents

电磁式流量计用变换器 Download PDF

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Publication number
CN1005927B
CN1005927B CN85107831.1A CN85107831A CN1005927B CN 1005927 B CN1005927 B CN 1005927B CN 85107831 A CN85107831 A CN 85107831A CN 1005927 B CN1005927 B CN 1005927B
Authority
CN
China
Prior art keywords
frequency
signal
output
multiplier
converter
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.)
Expired
Application number
CN85107831.1A
Other languages
English (en)
Chinese (zh)
Other versions
CN85107831A (zh
Inventor
小林保
后藤茂
太田博信
鸟丸尚
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
Yokogawa 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
Priority claimed from JP59224875A external-priority patent/JPS61102521A/ja
Priority claimed from JP18204384U external-priority patent/JPH0450512Y2/ja
Application filed by Yokogawa Electric Corp filed Critical Yokogawa Electric Corp
Publication of CN85107831A publication Critical patent/CN85107831A/zh
Publication of CN1005927B publication Critical patent/CN1005927B/zh
Expired legal-status Critical Current

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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

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
CN85107831.1A 1984-10-25 1985-10-24 电磁式流量计用变换器 Expired CN1005927B (zh)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP59224875A JPS61102521A (ja) 1984-10-25 1984-10-25 信号変換回路
JP224875/84 1984-10-25
JP84-224875 1984-10-25
JP18204384U JPH0450512Y2 (enExample) 1984-11-30 1984-11-30
JP84-182043 1984-11-30

Publications (2)

Publication Number Publication Date
CN85107831A CN85107831A (zh) 1986-05-10
CN1005927B true CN1005927B (zh) 1989-11-29

Family

ID=26500991

Family Applications (1)

Application Number Title Priority Date Filing Date
CN85107831.1A Expired CN1005927B (zh) 1984-10-25 1985-10-24 电磁式流量计用变换器

Country Status (4)

Country Link
US (1) US4680973A (enExample)
CN (1) CN1005927B (enExample)
DE (1) DE3537189A1 (enExample)
GB (1) GB2166550B (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079957A (en) * 1989-09-20 1992-01-14 Rosemount Inc. Conversion circuit for an electromagnetic flow transmitter
CN100342220C (zh) * 2005-12-14 2007-10-10 浙江大学 电磁流量计无源标准信号发生器
DE102011087827A1 (de) * 2011-12-06 2013-06-06 Endress + Hauser Flowtec Ag Verfahren und Schaltung zur Netzsynchronisation eines magnetisch-induktiven Durchflussmessgeräts
US10663331B2 (en) * 2013-09-26 2020-05-26 Rosemount Inc. Magnetic flowmeter with power limit and over-current detection

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783687A (en) * 1972-05-26 1974-01-08 Fischer & Porter Co Electromagnetic flowmeter with square-wave excitation
JPS5266452A (en) * 1975-11-29 1977-06-01 Hokushin Electric Works Signal converter
DE2733792C2 (de) * 1977-07-27 1979-06-13 Fa. Ludwig Krohne, 4100 Duisburg Verfahren und Schalteinrichtung zur Kompensationsverstärkung periodischer oder getakteter elektrischer Meßsignale
JPS5434863A (en) * 1977-08-24 1979-03-14 Hokushin Electric Works Excitation method of electromagnetic flowmeter
US4306461A (en) * 1979-10-09 1981-12-22 Emerson Electric Co. Meter incorporating a digital fullscale setting device
US4309909A (en) * 1979-10-09 1982-01-12 Emerson Electric Co. Crystal stabilized voltage to frequency converter with digital calibration for flowmeters
US4325261A (en) * 1979-10-09 1982-04-20 Emerson Electric Co. Pulsed DC constant current magnetic flowmeter
US4459857A (en) * 1982-06-16 1984-07-17 Rosemount Inc. Electromagnetic flowmeter

Also Published As

Publication number Publication date
DE3537189C2 (enExample) 1990-03-01
GB8524730D0 (en) 1985-11-13
GB2166550B (en) 1988-01-20
GB2166550A (en) 1986-05-08
CN85107831A (zh) 1986-05-10
US4680973A (en) 1987-07-21
DE3537189A1 (de) 1986-04-30

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