CA1182307A - Tunable notch filter for reducing vibration sensitivity for vortex shedding flowmeter generator - Google Patents

Tunable notch filter for reducing vibration sensitivity for vortex shedding flowmeter generator

Info

Publication number
CA1182307A
CA1182307A CA000417250A CA417250A CA1182307A CA 1182307 A CA1182307 A CA 1182307A CA 000417250 A CA000417250 A CA 000417250A CA 417250 A CA417250 A CA 417250A CA 1182307 A CA1182307 A CA 1182307A
Authority
CA
Canada
Prior art keywords
vibration signal
switches
vortex shedding
signal
frequency
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
CA000417250A
Other languages
English (en)
French (fr)
Inventor
William L. Thompson
Michael S. Willey
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.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox Co
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 Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Application granted granted Critical
Publication of CA1182307A publication Critical patent/CA1182307A/en
Expired 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
    • G01F1/05—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 mechanical effects
    • G01F1/20—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 mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—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 mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3287—Means for detecting quantities used as proxy variables for swirl circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
CA000417250A 1981-12-10 1982-12-08 Tunable notch filter for reducing vibration sensitivity for vortex shedding flowmeter generator Expired CA1182307A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/329,539 1981-12-10
US06/329,539 US4432242A (en) 1981-12-10 1981-12-10 Tunable notch filter for reducing vibration sensitivity for vortex shedding flowmeter generator

Publications (1)

Publication Number Publication Date
CA1182307A true CA1182307A (en) 1985-02-12

Family

ID=23285881

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000417250A Expired CA1182307A (en) 1981-12-10 1982-12-08 Tunable notch filter for reducing vibration sensitivity for vortex shedding flowmeter generator

Country Status (5)

Country Link
US (1) US4432242A (en])
EP (1) EP0084232B1 (en])
JP (1) JPS58154620A (en])
CA (1) CA1182307A (en])
DE (1) DE3275403D1 (en])

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63231221A (ja) * 1987-03-19 1988-09-27 Mitsubishi Electric Corp エンジンの吸気量測定装置
KR920010913B1 (ko) * 1988-04-19 1992-12-24 미쓰비시전기 주식회사 와 유량계
CA2000700A1 (en) * 1988-10-14 1990-04-14 Gerald L. Schlatter Signal processing method and apparatus for flowmeters
JPH0648351Y2 (ja) * 1988-11-14 1994-12-12 オーバル機器工業株式会社 渦流量計信号増幅回路
US5710720A (en) * 1996-04-30 1998-01-20 Board Of Regents Of The University Of Nebraska Phase lock loop based system and method for decomposing and tracking decomposed frequency components of a signal, with application to vibration compensation system
US8606543B2 (en) 2010-04-30 2013-12-10 Rosemount Aerospace Inc. Method to detect angle sensor performance degradation through dither monitoring
DE102011009894A1 (de) * 2011-01-31 2012-08-02 Krohne Messtechnik Gmbh Vortex-Durchflussmessgerät

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709034A (en) * 1971-02-02 1973-01-09 Fischer & Porter Co Signal conditioner for recovering dominant signals from swirl-type meters
US4019384A (en) * 1974-02-26 1977-04-26 Fischer & Porter Co. Digital read-out system for external-sensor vortex flowmeter
US3982434A (en) * 1975-03-14 1976-09-28 Eastech, Inc. Fluid flow signal processing circuit
US4094194A (en) * 1977-02-14 1978-06-13 Fischer & Porter Company Sensing system for vortex-type flowmeters
US4123940A (en) * 1977-09-23 1978-11-07 Fischer & Porter Company Transmission system for vortex-shedding flowmeter
JPS55113911A (en) * 1979-02-26 1980-09-02 Nissan Motor Co Ltd Karman vortex flow meter
JPS55117323A (en) * 1979-03-02 1980-09-09 Matsushita Electric Ind Co Ltd Filter
US4270391A (en) * 1979-08-24 1981-06-02 Fischer & Porter Co. Frequency-responsive filter for flowmeter transmission system
JPS5698613A (en) * 1980-01-11 1981-08-08 Nissan Motor Co Ltd Fuel control device
US4336513A (en) * 1980-07-02 1982-06-22 Hewlett-Packard Company Hum reduction circuit

Also Published As

Publication number Publication date
US4432242A (en) 1984-02-21
DE3275403D1 (en) 1987-03-12
JPS635686B2 (en]) 1988-02-04
EP0084232A1 (en) 1983-07-27
EP0084232B1 (en) 1987-02-04
JPS58154620A (ja) 1983-09-14

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry