FR2444929A1 - Debitmetre a ultrasons - Google Patents

Debitmetre a ultrasons

Info

Publication number
FR2444929A1
FR2444929A1 FR7930575A FR7930575A FR2444929A1 FR 2444929 A1 FR2444929 A1 FR 2444929A1 FR 7930575 A FR7930575 A FR 7930575A FR 7930575 A FR7930575 A FR 7930575A FR 2444929 A1 FR2444929 A1 FR 2444929A1
Authority
FR
France
Prior art keywords
transducers
ultrasonic flowmeter
acoustic pulses
pulses
sound
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.)
Granted
Application number
FR7930575A
Other languages
English (en)
Other versions
FR2444929B1 (fr
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.)
Schneider Electric Systems USA Inc
Original Assignee
Foxboro Co
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 Foxboro Co filed Critical Foxboro Co
Publication of FR2444929A1 publication Critical patent/FR2444929A1/fr
Application granted granted Critical
Publication of FR2444929B1 publication Critical patent/FR2444929B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01F1/668—Compensating or correcting for variations in velocity of sound

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne un débitmètre à ultrasons. Il comporte deux transducteurs qui émettent chacun alternativement des impulsions acoustiques vers l'autre. Ces deux transducteurs sont montés de préférence sur le même côté d'une conduite de manière à diriger les impulsions acoustiques obliquement pour qu'elles soient réfléchies par la paroi opposée. Chaque transducteur comporte un dispositif de transmission du son rigide qui réfléchit lui-même une partie des impulsions le long d'un trajet connu, afin de compenser les écarts de mesure résultant des variations de vitesse du son dans le fluide dont le débit est mesuré. L'invention s'applique notamment à des mesures de débit dans des dispositifs de commande de processus.
FR7930575A 1978-12-18 1979-12-13 Debitmetre a ultrasons Granted FR2444929A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/970,675 US4195517A (en) 1978-12-18 1978-12-18 Ultrasonic flowmeter

Publications (2)

Publication Number Publication Date
FR2444929A1 true FR2444929A1 (fr) 1980-07-18
FR2444929B1 FR2444929B1 (fr) 1983-12-16

Family

ID=25517304

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7930575A Granted FR2444929A1 (fr) 1978-12-18 1979-12-13 Debitmetre a ultrasons

Country Status (12)

Country Link
US (1) US4195517A (fr)
JP (1) JPS5593018A (fr)
AR (1) AR219845A1 (fr)
CA (1) CA1123088A (fr)
DE (1) DE2950732C2 (fr)
FI (1) FI793951A7 (fr)
FR (1) FR2444929A1 (fr)
GB (1) GB2037986B (fr)
IT (1) IT1164099B (fr)
NL (1) NL7909020A (fr)
NO (1) NO794111L (fr)
SE (1) SE445261B (fr)

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Also Published As

Publication number Publication date
JPS5593018A (en) 1980-07-15
NO794111L (no) 1980-06-19
SE7910386L (sv) 1980-08-06
CA1123088A (fr) 1982-05-04
NL7909020A (nl) 1980-06-20
GB2037986A (en) 1980-07-16
DE2950732A1 (de) 1980-07-10
US4195517A (en) 1980-04-01
FI793951A7 (fi) 1981-01-01
AR219845A1 (es) 1980-09-15
DE2950732C2 (de) 1985-12-12
GB2037986B (en) 1982-12-22
IT1164099B (it) 1987-04-08
FR2444929B1 (fr) 1983-12-16
IT7951102A0 (it) 1979-12-17
SE445261B (sv) 1986-06-09

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