GB2070771B - Methods and apparatus for measuring the cross-sectional area of a duct and the volume flow rate of fluid in the duct - Google Patents

Methods and apparatus for measuring the cross-sectional area of a duct and the volume flow rate of fluid in the duct

Info

Publication number
GB2070771B
GB2070771B GB8103354A GB8103354A GB2070771B GB 2070771 B GB2070771 B GB 2070771B GB 8103354 A GB8103354 A GB 8103354A GB 8103354 A GB8103354 A GB 8103354A GB 2070771 B GB2070771 B GB 2070771B
Authority
GB
United Kingdom
Prior art keywords
duct
fluid
measuring
methods
cross
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
GB8103354A
Other versions
GB2070771A (en
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.)
National Research Development Corp UK
National Research Development Corp of India
Original Assignee
National Research Development Corp UK
National Research Development Corp of India
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 National Research Development Corp UK, National Research Development Corp of India filed Critical National Research Development Corp UK
Publication of GB2070771A publication Critical patent/GB2070771A/en
Application granted granted Critical
Publication of GB2070771B publication Critical patent/GB2070771B/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/06—Measuring blood flow
    • 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
    • G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/663—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters by measuring Doppler frequency shift

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Fluid Mechanics (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measuring Volume Flow (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
GB8103354A 1980-02-29 1981-02-04 Methods and apparatus for measuring the cross-sectional area of a duct and the volume flow rate of fluid in the duct Expired GB2070771B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8007008 1980-02-29

Publications (2)

Publication Number Publication Date
GB2070771A GB2070771A (en) 1981-09-09
GB2070771B true GB2070771B (en) 1984-08-08

Family

ID=10511790

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8103354A Expired GB2070771B (en) 1980-02-29 1981-02-04 Methods and apparatus for measuring the cross-sectional area of a duct and the volume flow rate of fluid in the duct

Country Status (2)

Country Link
JP (1) JPS56137113A (en)
GB (1) GB2070771B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9112854D0 (en) * 1991-06-14 1991-07-31 Skidmore Robert Flowmeters
US6473705B1 (en) * 2000-10-10 2002-10-29 General Electric Company System and method for direct non-intrusive measurement of corrected airflow

Also Published As

Publication number Publication date
GB2070771A (en) 1981-09-09
JPS56137113A (en) 1981-10-26

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930204