FR2421371A1 - Perfectionnements aux debitmetres ultrasoniques - Google Patents

Perfectionnements aux debitmetres ultrasoniques

Info

Publication number
FR2421371A1
FR2421371A1 FR7907645A FR7907645A FR2421371A1 FR 2421371 A1 FR2421371 A1 FR 2421371A1 FR 7907645 A FR7907645 A FR 7907645A FR 7907645 A FR7907645 A FR 7907645A FR 2421371 A1 FR2421371 A1 FR 2421371A1
Authority
FR
France
Prior art keywords
electroacoustic transducers
generation
fluid flow
detection functions
employs
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.)
Withdrawn
Application number
FR7907645A
Other languages
English (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.)
Flowmetering Instruments Ltd
Original Assignee
Flowmetering Instruments 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 Flowmetering Instruments Ltd filed Critical Flowmetering Instruments Ltd
Publication of FR2421371A1 publication Critical patent/FR2421371A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic 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
    • 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
    • G01P5/247—Sing-around-systems

Abstract

Ce débitmètre comprend un premier et un deuxième transducteurs électroacoustiques 13, 14 espacés de part et d'autre d'un parcours d'écoulement du fluide dont il s'agit de mesurer le débit et placés face à face le long d'un axe ayant une composante parallèle au parcours d'écoulement, un générateur 33 courant ou de tension électrique, des moyens permettant de détecter respectivement une tension ou un courant électrique, des moyens 32 de commutation ayant un premier état dans lequel le générateur est relié au premier transducteur et les moyens de détection au deuxième transducteur et un deuxième état dans lequel les moyens de détection sont reliés au premier transducteur et le générateur au deuxième transducteur. Des moyens 35 de rythme permettent de mesurer la différence de temps ou de phase entre l'émission du signal par le générateur et la réception du signal par les moyens de détection pour les deux états des moyens de commutation, et des moyens 43 permettant de convertir ladite différence de temps ou de phase en une indication de débit. Application à la mesure de l'écoulement de fluides.
FR7907645A 1978-03-29 1979-03-27 Perfectionnements aux debitmetres ultrasoniques Withdrawn FR2421371A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1215078 1978-03-29

Publications (1)

Publication Number Publication Date
FR2421371A1 true FR2421371A1 (fr) 1979-10-26

Family

ID=9999269

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7907645A Withdrawn FR2421371A1 (fr) 1978-03-29 1979-03-27 Perfectionnements aux debitmetres ultrasoniques

Country Status (5)

Country Link
BE (1) BE875194A (fr)
DE (1) DE2911962A1 (fr)
FR (1) FR2421371A1 (fr)
LU (1) LU81093A1 (fr)
NL (1) NL7902458A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3025788C2 (de) * 1980-07-08 1985-07-04 Danfoss A/S, Nordborg Ultraschall-Meßgerät
RU2502054C1 (ru) * 2012-04-17 2013-12-20 Общество с ограниченной ответственностью "Научно-производственное предприятие "Уралтехнология" (ООО НПП "Уралтехнология") Ультразвуковой расходомер

Also Published As

Publication number Publication date
DE2911962A1 (de) 1979-10-11
LU81093A1 (fr) 1979-06-19
NL7902458A (nl) 1979-10-02
BE875194A (fr) 1979-07-16

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Legal Events

Date Code Title Description
ST Notification of lapse