ES8206022A1 - Procedimiento y dispositivo electronico para la medicion de caudales de fluidos por medios termicos - Google Patents
Procedimiento y dispositivo electronico para la medicion de caudales de fluidos por medios termicosInfo
- Publication number
- ES8206022A1 ES8206022A1 ES504933A ES504933A ES8206022A1 ES 8206022 A1 ES8206022 A1 ES 8206022A1 ES 504933 A ES504933 A ES 504933A ES 504933 A ES504933 A ES 504933A ES 8206022 A1 ES8206022 A1 ES 8206022A1
- Authority
- ES
- Spain
- Prior art keywords
- flow
- fluid
- measuring
- heating resistor
- thermal flowmeter
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 4
- 238000011144 upstream manufacturing Methods 0.000 abstract 3
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
- G01F1/68—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 using thermal effects
- G01F1/696—Circuits therefor, e.g. constant-current flow meters
-
- 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
- G01F1/68—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 using thermal effects
-
- 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
- G01F1/68—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 using thermal effects
- G01F1/696—Circuits therefor, e.g. constant-current flow meters
- G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
-
- 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
- G01F1/68—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 using thermal effects
- G01F1/696—Circuits therefor, e.g. constant-current flow meters
- G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
- G01F1/6986—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters with pulsed heating, e.g. dynamic methods
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
PROCEDIMIENTO Y DISPOSITIVOS ELECTRONICO PARA LA MEDICION DE CAUDALES DE FLUIDOS POR MEDIOS TERMICOS. CONSISTE EN CALENTAR UN FLUIDO QUE CIRCULA EN UN CONDUCTO POR MEDIO DE UNA RESISTENCIA, MIDIENDOSE LA ELEVACION DE TEMPERATURA ENTRE DOS PUNTOS FIJOS, COLOCANDOSE EN DICHOS DOS PUNTOS DOS CAPTADORES. EL CAPTADOR DE ENTRADA SE COLOCA MAS ALEJADO DE LA RESISTENCIA DE CALENTAMIENTO QUE EL CAPTADOR DE SALIDA. EN UN PRIMER MODO DE FUNCIONAMIENTO LA POTENCIA P DISIPADA EN LA RESISTENCIA SE MANTIENE CONSTANTE Y EL CAUDAL D SE MIDE SEGUN LA ECUACION (1), DONDE TS Y TE SON LAS TEMEPERATURAS DETECTADAS POR LOS CAPTADORES DE ENTRADA Y DE SALIDA Y A ES EL COEFICIENTE QUE DEPENDE DEL FLUIDO. EN UN SEGUNDO MODO DE FUNCIONAMIENTO LA DIFERENCIA DE TEMPERATURA SE MANTIENE CONSTANTE, QUEDANDO DEFINIDO EL CAUDAL EN LA ECUACION (II), DONDE TO VIENE DADA POR LA ECUACION (III).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8017697A FR2487973B1 (fr) | 1980-08-01 | 1980-08-01 | Debitmetre thermique : procede et dispositifs electroniques permettant de mesurer l'ecoulement d'un fluide en fonction des variations de sa temperature |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8206022A1 true ES8206022A1 (es) | 1982-06-16 |
ES504933A0 ES504933A0 (es) | 1982-06-16 |
Family
ID=9245089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES504933A Granted ES504933A0 (es) | 1980-08-01 | 1981-07-27 | Procedimiento y dispositivo electronico para la medicion de caudales de fluidos por medios termicos |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE3130405A1 (es) |
ES (1) | ES504933A0 (es) |
FR (1) | FR2487973B1 (es) |
IT (1) | IT1142593B (es) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3841637C1 (es) * | 1988-12-10 | 1990-05-10 | Gebr. Schmidt Fabrik Fuer Feinmechanik, 7742 St Georgen, De | |
AT395483B (de) * | 1989-01-13 | 1993-01-25 | Vaillant Gmbh | Rein elektrisch beheizter durchlauferhitzer mit vorrichtung zum ermitteln des wasserdurchsatzes |
DE3938286C2 (de) * | 1989-11-17 | 1999-11-04 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Temperatursteuerung eines den Durchsatz einer strömenden Fluidmasse erfassenden Meßwiderstands |
WO1991019170A1 (en) * | 1990-06-04 | 1991-12-12 | Mcpherson's Limited | Flow sensor and control system |
DE4127675C2 (de) * | 1991-08-21 | 1996-08-14 | Elbau Elektronik Bauelemente G | Verfahren und Vorrichtung zum Überwachen der Strömung eines Fluids in einer Leitung, insbesondere für Infusionssysteme |
US8550702B2 (en) | 2011-10-31 | 2013-10-08 | International Business Machines Corporation | Calibrated airflow sensor facilitating monitoring of electronic system cooling |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1341354A (fr) * | 1962-12-19 | 1963-10-25 | Rheostatic Co Ltd | Procédé et dispositif pour mesurer le débit massique d'un fluide |
US3438254A (en) * | 1965-10-19 | 1969-04-15 | United Control Corp | Fluid flow detector |
FR2246846A1 (en) * | 1973-10-09 | 1975-05-02 | Thomson Csf | Linear flow meter based on thermodynamic laws - measures temp upstream and downstream of heat source in fluid flow |
-
1980
- 1980-08-01 FR FR8017697A patent/FR2487973B1/fr not_active Expired
-
1981
- 1981-07-24 IT IT48964/81A patent/IT1142593B/it active
- 1981-07-27 ES ES504933A patent/ES504933A0/es active Granted
- 1981-07-31 DE DE19813130405 patent/DE3130405A1/de not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
FR2487973B1 (fr) | 1986-07-25 |
FR2487973A1 (fr) | 1982-02-05 |
ES504933A0 (es) | 1982-06-16 |
IT1142593B (it) | 1986-10-08 |
DE3130405A1 (de) | 1982-06-16 |
IT8148964A0 (it) | 1981-07-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19970203 |