GB2311608B - Timing arrangement for an air flow meter - Google Patents

Timing arrangement for an air flow meter

Info

Publication number
GB2311608B
GB2311608B GB9606277A GB9606277A GB2311608B GB 2311608 B GB2311608 B GB 2311608B GB 9606277 A GB9606277 A GB 9606277A GB 9606277 A GB9606277 A GB 9606277A GB 2311608 B GB2311608 B GB 2311608B
Authority
GB
United Kingdom
Prior art keywords
air flow
flow meter
timing arrangement
timing
arrangement
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 - Fee Related
Application number
GB9606277A
Other versions
GB9606277D0 (en
GB2311608A (en
Inventor
Jan Casimir Kowal
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.)
Airflow Developments Ltd
Original Assignee
Airflow Developments 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 Airflow Developments Ltd filed Critical Airflow Developments Ltd
Priority to GB9606277A priority Critical patent/GB2311608B/en
Publication of GB9606277D0 publication Critical patent/GB9606277D0/en
Priority to GBGB9703968.9A priority patent/GB9703968D0/en
Publication of GB2311608A publication Critical patent/GB2311608A/en
Application granted granted Critical
Publication of GB2311608B publication Critical patent/GB2311608B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
    • G01P5/245—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by measuring transit time of acoustical waves
    • 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
    • G01F1/662—Constructional details
    • 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
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measuring Volume Flow (AREA)
GB9606277A 1996-03-26 1996-03-26 Timing arrangement for an air flow meter Expired - Fee Related GB2311608B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9606277A GB2311608B (en) 1996-03-26 1996-03-26 Timing arrangement for an air flow meter
GBGB9703968.9A GB9703968D0 (en) 1996-03-26 1997-02-26 Timing arrangement for an air flow meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9606277A GB2311608B (en) 1996-03-26 1996-03-26 Timing arrangement for an air flow meter

Publications (3)

Publication Number Publication Date
GB9606277D0 GB9606277D0 (en) 1996-05-29
GB2311608A GB2311608A (en) 1997-10-01
GB2311608B true GB2311608B (en) 1999-10-27

Family

ID=10790993

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9606277A Expired - Fee Related GB2311608B (en) 1996-03-26 1996-03-26 Timing arrangement for an air flow meter
GBGB9703968.9A Pending GB9703968D0 (en) 1996-03-26 1997-02-26 Timing arrangement for an air flow meter

Family Applications After (1)

Application Number Title Priority Date Filing Date
GBGB9703968.9A Pending GB9703968D0 (en) 1996-03-26 1997-02-26 Timing arrangement for an air flow meter

Country Status (1)

Country Link
GB (2) GB2311608B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176894A (en) * 1985-06-17 1987-01-07 John Traina Method and apparatus for measurement of the time required for an ultrasonic tone burst to traverse a medium

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176894A (en) * 1985-06-17 1987-01-07 John Traina Method and apparatus for measurement of the time required for an ultrasonic tone burst to traverse a medium

Also Published As

Publication number Publication date
GB9606277D0 (en) 1996-05-29
GB9703968D0 (en) 1997-04-16
GB2311608A (en) 1997-10-01

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090326