GB2254427B - Speed measurement device - Google Patents

Speed measurement device

Info

Publication number
GB2254427B
GB2254427B GB9212420A GB9212420A GB2254427B GB 2254427 B GB2254427 B GB 2254427B GB 9212420 A GB9212420 A GB 9212420A GB 9212420 A GB9212420 A GB 9212420A GB 2254427 B GB2254427 B GB 2254427B
Authority
GB
United Kingdom
Prior art keywords
measurement device
speed measurement
speed
measurement
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 - Lifetime
Application number
GB9212420A
Other versions
GB2254427A (en
GB9212420D0 (en
Inventor
Michael John Gill
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.)
British Gas PLC
Original Assignee
British Gas PLC
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 GB888813640A external-priority patent/GB8813640D0/en
Application filed by British Gas PLC filed Critical British Gas PLC
Priority to GB9212420A priority Critical patent/GB2254427B/en
Publication of GB9212420D0 publication Critical patent/GB9212420D0/en
Publication of GB2254427A publication Critical patent/GB2254427A/en
Application granted granted Critical
Publication of GB2254427B publication Critical patent/GB2254427B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measuring Volume Flow (AREA)
GB9212420A 1988-06-09 1992-06-11 Speed measurement device Expired - Lifetime GB2254427B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9212420A GB2254427B (en) 1988-06-09 1992-06-11 Speed measurement device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB888813640A GB8813640D0 (en) 1988-06-09 1988-06-09 Speed measurement device
GB8913320A GB2222254B (en) 1988-06-09 1989-06-09 A speed measurement device
GB9212420A GB2254427B (en) 1988-06-09 1992-06-11 Speed measurement device

Publications (3)

Publication Number Publication Date
GB9212420D0 GB9212420D0 (en) 1992-07-22
GB2254427A GB2254427A (en) 1992-10-07
GB2254427B true GB2254427B (en) 1993-02-03

Family

ID=27263937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9212420A Expired - Lifetime GB2254427B (en) 1988-06-09 1992-06-11 Speed measurement device

Country Status (1)

Country Link
GB (1) GB2254427B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2032117A (en) * 1978-08-25 1980-04-30 Nissan Motor Fluid measuring device
GB2052741A (en) * 1979-06-08 1981-01-28 Landis & Gyr Ag Measurement value generators for determining the through-flow rate of a flowing fluid
US4480486A (en) * 1982-03-01 1984-11-06 Lgz Landis & Gyr Zug Ag Apparatus for measuring liquid flow
GB2142725A (en) * 1983-06-21 1985-01-23 United Gas Industries Ltd Fluid flow meter
EP0202583A1 (en) * 1985-05-21 1986-11-26 Siemens Aktiengesellschaft Flow meter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2032117A (en) * 1978-08-25 1980-04-30 Nissan Motor Fluid measuring device
GB2052741A (en) * 1979-06-08 1981-01-28 Landis & Gyr Ag Measurement value generators for determining the through-flow rate of a flowing fluid
US4480486A (en) * 1982-03-01 1984-11-06 Lgz Landis & Gyr Zug Ag Apparatus for measuring liquid flow
GB2142725A (en) * 1983-06-21 1985-01-23 United Gas Industries Ltd Fluid flow meter
EP0202583A1 (en) * 1985-05-21 1986-11-26 Siemens Aktiengesellschaft Flow meter

Also Published As

Publication number Publication date
GB2254427A (en) 1992-10-07
GB9212420D0 (en) 1992-07-22

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Legal Events

Date Code Title Description
773C Action not proceeded with (sect. 73/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20090608