FR2450456B1 - - Google Patents
Info
- Publication number
- FR2450456B1 FR2450456B1 FR7905824A FR7905824A FR2450456B1 FR 2450456 B1 FR2450456 B1 FR 2450456B1 FR 7905824 A FR7905824 A FR 7905824A FR 7905824 A FR7905824 A FR 7905824A FR 2450456 B1 FR2450456 B1 FR 2450456B1
- 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
Links
Classifications
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- 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
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- 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
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7905824A FR2450456A1 (fr) | 1979-02-28 | 1979-02-28 | Velocimetre a onde acoustique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7905824A FR2450456A1 (fr) | 1979-02-28 | 1979-02-28 | Velocimetre a onde acoustique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2450456A1 FR2450456A1 (fr) | 1980-09-26 |
| FR2450456B1 true FR2450456B1 (US07166745-20070123-C00016.png) | 1983-03-25 |
Family
ID=9222840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7905824A Granted FR2450456A1 (fr) | 1979-02-28 | 1979-02-28 | Velocimetre a onde acoustique |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2450456A1 (US07166745-20070123-C00016.png) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2803032B1 (fr) * | 1999-12-28 | 2002-06-07 | Gaz De France | Procede et dispositif de mesure d'un debit de fluide circulant dans une canalisation |
| CN110542460B (zh) * | 2019-09-03 | 2021-07-27 | 西安安森智能仪器股份有限公司 | 一种多声道超声波流量计换能器驱动电路及其控制方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3420102A (en) * | 1966-12-15 | 1969-01-07 | Lockheed Aircraft Corp | Acoustic fluid metering device |
| US3751979A (en) * | 1971-11-17 | 1973-08-14 | Raytheon Co | Speed measurement system |
| US3914998A (en) * | 1974-01-03 | 1975-10-28 | Westinghouse Electric Corp | Ultrasonic flowmeter system with alternating two-way transmission |
| US4003256A (en) * | 1975-11-17 | 1977-01-18 | Canadian Patents And Development Limited | Acoustic oscillator fluid velocity measuring device |
-
1979
- 1979-02-28 FR FR7905824A patent/FR2450456A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2450456A1 (fr) | 1980-09-26 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |