FR2333401B2 - - Google Patents

Info

Publication number
FR2333401B2
FR2333401B2 FR7629445A FR7629445A FR2333401B2 FR 2333401 B2 FR2333401 B2 FR 2333401B2 FR 7629445 A FR7629445 A FR 7629445A FR 7629445 A FR7629445 A FR 7629445A FR 2333401 B2 FR2333401 B2 FR 2333401B2
Authority
FR
France
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
FR7629445A
Other versions
FR2333401A2 (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.)
Fiat Auto SpA
Original Assignee
Fiat Auto SpA
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 US05/636,054 external-priority patent/US4011473A/en
Application filed by Fiat Auto SpA filed Critical Fiat Auto SpA
Publication of FR2333401A2 publication Critical patent/FR2333401A2/fr
Application granted granted Critical
Publication of FR2333401B2 publication Critical patent/FR2333401B2/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
    • G01F1/662—Constructional details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • B06B1/0662—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface
    • B06B1/0681—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface and a damping structure

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Volume Flow (AREA)
FR7629445A 1975-11-28 1976-09-30 Transducteur ultrasonore directionnel presentant des lobes secondaires reduits Granted FR2333401A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/636,054 US4011473A (en) 1974-08-26 1975-11-28 Ultrasonic transducer with improved transient response and method for utilizing transducer to increase accuracy of measurement of an ultrasonic flow meter

Publications (2)

Publication Number Publication Date
FR2333401A2 FR2333401A2 (fr) 1977-06-24
FR2333401B2 true FR2333401B2 (fr) 1982-03-19

Family

ID=24550217

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7629445A Granted FR2333401A2 (fr) 1975-11-28 1976-09-30 Transducteur ultrasonore directionnel presentant des lobes secondaires reduits

Country Status (2)

Country Link
FR (1) FR2333401A2 (fr)
IT (1) IT1069118B (fr)

Also Published As

Publication number Publication date
FR2333401A2 (fr) 1977-06-24
IT1069118B (it) 1985-03-25

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Legal Events

Date Code Title Description
TP Transmission of property