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 termicos

Info

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
Application number
ES504933A
Other languages
English (en)
Other versions
ES504933A0 (es
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.)
Soule SA
Original Assignee
Soule SA
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 Soule SA filed Critical Soule SA
Publication of ES504933A0 publication Critical patent/ES504933A0/es
Publication of ES8206022A1 publication Critical patent/ES8206022A1/es
Expired 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
    • G01F1/68—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).
ES504933A 1980-08-01 1981-07-27 Procedimiento y dispositivo electronico para la medicion de caudales de fluidos por medios termicos Expired ES8206022A1 (es)

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
ES504933A0 ES504933A0 (es) 1982-06-16
ES8206022A1 true ES8206022A1 (es) 1982-06-16

Family

ID=9245089

Family Applications (1)

Application Number Title Priority Date Filing Date
ES504933A Expired ES8206022A1 (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) ES8206022A1 (es)
FR (1) FR2487973B1 (es)
IT (1) IT1142593B (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
IT1142593B (it) 1986-10-08
FR2487973A1 (fr) 1982-02-05
ES504933A0 (es) 1982-06-16
FR2487973B1 (fr) 1986-07-25
IT8148964A0 (it) 1981-07-24
DE3130405A1 (de) 1982-06-16

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970203