FR2280884B1 - - Google Patents
Info
- Publication number
- FR2280884B1 FR2280884B1 FR7523671A FR7523671A FR2280884B1 FR 2280884 B1 FR2280884 B1 FR 2280884B1 FR 7523671 A FR7523671 A FR 7523671A FR 7523671 A FR7523671 A FR 7523671A FR 2280884 B1 FR2280884 B1 FR 2280884B1
- 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
-
- 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)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT6943974A IT1016749B (it) | 1974-08-01 | 1974-08-01 | Dispositivo ad ultrasuoni per la misura della portata d aria in mas sa in un condotto |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2280884A1 FR2280884A1 (fr) | 1976-02-27 |
FR2280884B1 true FR2280884B1 (fr) | 1978-06-09 |
Family
ID=11312136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7523671A Granted FR2280884A1 (fr) | 1974-08-01 | 1975-07-29 | Appareil a ultrasons pour mesurer le debit d'air dans un conduit |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5137669A (fr) |
DE (1) | DE2527286B2 (fr) |
FR (1) | FR2280884A1 (fr) |
GB (1) | GB1509963A (fr) |
IT (1) | IT1016749B (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2648718C2 (de) * | 1976-10-27 | 1978-12-21 | Danfoss A/S, Nordborg (Daenemark) | Mit Ultraschall arbeitendes Gerät zum Ermitteln physikalischer Größen eines Mediums |
CH604133A5 (fr) * | 1977-05-10 | 1978-08-31 | Landis & Gyr Ag | |
DE2953179A1 (de) * | 1978-09-29 | 1980-12-04 | Neil Brown Instr Syst Inc | Acoustic current meter |
IT1144295B (it) * | 1981-07-10 | 1986-10-29 | Fiat Ricerche | Dispositivo ultrasonico per la misura della portata di un fluido in un condotto |
CA1307605C (fr) * | 1987-06-23 | 1992-09-15 | Rene Arpin | Polymeres a groupements imides sans diamine et leur procede de preparation |
US5221723A (en) * | 1987-06-23 | 1993-06-22 | Ciba-Geigy Corporation | Thermally stable bisimido copolymerizates |
WO1994020822A1 (fr) * | 1993-03-09 | 1994-09-15 | Commonwealth Scientific And Industrial Research Organisation | Structure de debitmetre de fluide |
DE19704001A1 (de) * | 1997-02-04 | 1998-08-06 | Herzog Stephan | Windgeschwindigkeitsmessung per Ultraschall |
US9335194B2 (en) | 2013-09-16 | 2016-05-10 | Agena A/S | System or a method for measuring flow of fluid or gas |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2831348A (en) * | 1953-08-14 | 1958-04-22 | Kritz Jack | Apparatus for suppressing undesirable modes in ultrasonic flowmeters |
US2991650A (en) * | 1956-03-07 | 1961-07-11 | Henry S Katzenstein | Sonic flow meter |
US3050997A (en) * | 1958-06-10 | 1962-08-28 | Nat Res Dev | Flowmeters |
GB1072519A (en) * | 1964-11-24 | 1967-06-21 | Decca Ltd | Improvements in or relating to speed measuring devices |
FR95411E (fr) * | 1968-02-26 | 1970-11-06 | Realisations Ultrasoniques Sa | Débitmetre a ultra-sons. |
FR2070438A5 (fr) * | 1969-12-04 | 1971-09-10 | Alais Pierre | |
US3575049A (en) * | 1970-01-08 | 1971-04-13 | Atomic Energy Commission | Sonic flow meter |
FR2077827A1 (fr) * | 1970-02-17 | 1971-11-05 | Thomson Csf |
-
1974
- 1974-08-01 IT IT6943974A patent/IT1016749B/it active
-
1975
- 1975-05-20 GB GB2154875A patent/GB1509963A/en not_active Expired
- 1975-06-19 DE DE19752527286 patent/DE2527286B2/de not_active Ceased
- 1975-07-23 JP JP9001175A patent/JPS5137669A/ja active Pending
- 1975-07-29 FR FR7523671A patent/FR2280884A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5137669A (en) | 1976-03-30 |
DE2527286A1 (de) | 1976-02-19 |
GB1509963A (en) | 1978-05-10 |
FR2280884A1 (fr) | 1976-02-27 |
IT1016749B (it) | 1977-06-20 |
DE2527286B2 (de) | 1977-12-22 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |