GB1370588A - Flowmeter computer - Google Patents

Flowmeter computer

Info

Publication number
GB1370588A
GB1370588A GB805273A GB805273A GB1370588A GB 1370588 A GB1370588 A GB 1370588A GB 805273 A GB805273 A GB 805273A GB 805273 A GB805273 A GB 805273A GB 1370588 A GB1370588 A GB 1370588A
Authority
GB
United Kingdom
Prior art keywords
signal
counter
receipt
flow velocity
elapsed time
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
GB805273A
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.)
CBS Corp
Original Assignee
Westinghouse 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
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1370588A publication Critical patent/GB1370588A/en
Expired 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
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters

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)

Abstract

1370588 Acoustic flow meter WESTING- HOUSE ELECTRIC CORP 19 Feb 1973 [1 March 1972] 8052/73 Heading H4D [Also in Division G4] The flow velocity of a liquid 20 relative to two transducers 11, 12 is measured by simultaneously transmitting an acoustic signal from each transducer, measuring the time delay before receipt of the signal at each transducer and calculating the flow velocity from the elapsed time by digital programmable means. The time measurement device 16 comprises two elapsed time counters and a source of clock pulses. Transmission of the acoustic signal from 13 initiates the feeding of clock pulses to a first counter. This count is stopped and a pulse feed to the second counter started on receipt of a signal from either receiver A or B. The count in the second counter is stopped on receipt of a signal from the other receiver. The counter readings then represent the elapsed times. The digital processor comprises a preprocessor, a programming unit and an arithmetic unit. Its caldilation and function can be altered by changing plug-in modules and it includes self checking apparatus and means for checking that the elapsed time signals fall within a predetermined time span. The apparatus may comprise several transducers which can be selectively grouped in pairs for measurement. The output display may indicate flow velocity, flow direction and mass flow rate.
GB805273A 1972-03-01 1973-02-19 Flowmeter computer Expired GB1370588A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23087472A 1972-03-01 1972-03-01

Publications (1)

Publication Number Publication Date
GB1370588A true GB1370588A (en) 1974-10-16

Family

ID=22866917

Family Applications (1)

Application Number Title Priority Date Filing Date
GB805273A Expired GB1370588A (en) 1972-03-01 1973-02-19 Flowmeter computer

Country Status (6)

Country Link
JP (1) JPS4896157A (en)
CA (1) CA1003945A (en)
CH (1) CH565370A5 (en)
DE (1) DE2309606A1 (en)
GB (1) GB1370588A (en)
ZA (1) ZA73612B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0407676B1 (en) * 1989-07-14 1994-04-27 Haiges Elektronik Gmbh Method for measuring the time differences among the ultrasound signals belonging to a group, and apparatus for carrying out the method
DE102015106897B4 (en) * 2015-05-04 2021-12-02 Endress+Hauser Flowtec Ag Method and device for verifying the operation of an ultrasonic flow measuring device based on the transit time difference method

Also Published As

Publication number Publication date
CH565370A5 (en) 1975-08-15
ZA73612B (en) 1973-10-31
JPS4896157A (en) 1973-12-08
DE2309606A1 (en) 1973-09-06
CA1003945A (en) 1977-01-18
AU5165373A (en) 1974-08-01

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930217