FR2308090A1 - Fluid flow determination using thermoresistances - has electrical heating pulses applied to resistances in flow channels - Google Patents

Fluid flow determination using thermoresistances - has electrical heating pulses applied to resistances in flow channels

Info

Publication number
FR2308090A1
FR2308090A1 FR7511844A FR7511844A FR2308090A1 FR 2308090 A1 FR2308090 A1 FR 2308090A1 FR 7511844 A FR7511844 A FR 7511844A FR 7511844 A FR7511844 A FR 7511844A FR 2308090 A1 FR2308090 A1 FR 2308090A1
Authority
FR
France
Prior art keywords
thermoresistances
flow
electrical heating
resistances
pulses applied
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.)
Granted
Application number
FR7511844A
Other languages
French (fr)
Other versions
FR2308090B1 (en
Inventor
Pierre Calvet
Francoise Liousse
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.)
Office National dEtudes et de Recherches Aerospatiales ONERA
Original Assignee
Office National dEtudes et de Recherches Aerospatiales ONERA
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 Office National dEtudes et de Recherches Aerospatiales ONERA filed Critical Office National dEtudes et de Recherches Aerospatiales ONERA
Priority to FR7511844A priority Critical patent/FR2308090A1/en
Publication of FR2308090A1 publication Critical patent/FR2308090A1/en
Application granted granted Critical
Publication of FR2308090B1 publication Critical patent/FR2308090B1/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
    • G01F1/68—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

Abstract

The method of measuring the mass flow of a fluid flowing in a known direction along a channel (11) whose walls (12) form heat sinks involves placing one or more thermoresistances (10) in the flow, applying an electrical heating current to these thermoresistances, and determining the thermal transfer within the fluid. The thermoresistances are actuated so that an alternating flow is set up superimposed upon the main flow. This is achieved by applying electrical heating current pulses to the thermoresistances at regular intervals, the thermal transfer being determined during the time intervals between the heating pulses. A diaphragm (13, 14) pierced with a slit or an orifice is placed in the flow to ensure that the flow velocity on the sensor is greater than that in the remainder of the channel. The diameter of the slit or orifice is approx. 10 mm.
FR7511844A 1975-04-16 1975-04-16 Fluid flow determination using thermoresistances - has electrical heating pulses applied to resistances in flow channels Granted FR2308090A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7511844A FR2308090A1 (en) 1975-04-16 1975-04-16 Fluid flow determination using thermoresistances - has electrical heating pulses applied to resistances in flow channels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7511844A FR2308090A1 (en) 1975-04-16 1975-04-16 Fluid flow determination using thermoresistances - has electrical heating pulses applied to resistances in flow channels

Publications (2)

Publication Number Publication Date
FR2308090A1 true FR2308090A1 (en) 1976-11-12
FR2308090B1 FR2308090B1 (en) 1978-04-21

Family

ID=9154030

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7511844A Granted FR2308090A1 (en) 1975-04-16 1975-04-16 Fluid flow determination using thermoresistances - has electrical heating pulses applied to resistances in flow channels

Country Status (1)

Country Link
FR (1) FR2308090A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451022A2 (en) * 1979-03-08 1980-10-03 Onera (Off Nat Aerospatiale) Fluid flow and heat transfer measurement - employs acoustic exciter to vary and apply alternating flow rate
FR2514128A1 (en) * 1981-10-05 1983-04-08 Onera (Off Nat Aerospatiale) Pneumatic measuring bridge e.g. for gas temp. - has two branches each including enclosure imposing load loss as function of flow, and supply providing alternate flow

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1026602A (en) * 1962-02-05 1966-04-20 Rank Organisation Ltd Improvements in or relating to flowmeters
FR1543132A (en) * 1966-11-02 1968-10-18 Graviner Colnbrook Ltd Method and apparatus for measuring the flow rate of fluids
FR2010445A6 (en) * 1968-06-08 1970-02-13 Graviner Ltd
US3699812A (en) * 1971-01-29 1972-10-24 Walter Masnik Mass flowmeter
FR2193487A5 (en) * 1972-07-21 1974-02-15 Onera (Off Nat Aerospatiale)
DE2311103A1 (en) * 1973-03-06 1974-09-12 Helmut Dipl-Chem Ulrich DEVICE FOR FLOW MEASUREMENT AND / OR THERMAL CONDUCTIVITY MEASUREMENT AND / OR MEASUREMENT OF THE SPECIFIC HEAT OR FOR GAS ANALYSIS

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1026602A (en) * 1962-02-05 1966-04-20 Rank Organisation Ltd Improvements in or relating to flowmeters
FR1543132A (en) * 1966-11-02 1968-10-18 Graviner Colnbrook Ltd Method and apparatus for measuring the flow rate of fluids
FR2010445A6 (en) * 1968-06-08 1970-02-13 Graviner Ltd
US3699812A (en) * 1971-01-29 1972-10-24 Walter Masnik Mass flowmeter
FR2193487A5 (en) * 1972-07-21 1974-02-15 Onera (Off Nat Aerospatiale)
DE2311103A1 (en) * 1973-03-06 1974-09-12 Helmut Dipl-Chem Ulrich DEVICE FOR FLOW MEASUREMENT AND / OR THERMAL CONDUCTIVITY MEASUREMENT AND / OR MEASUREMENT OF THE SPECIFIC HEAT OR FOR GAS ANALYSIS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451022A2 (en) * 1979-03-08 1980-10-03 Onera (Off Nat Aerospatiale) Fluid flow and heat transfer measurement - employs acoustic exciter to vary and apply alternating flow rate
FR2514128A1 (en) * 1981-10-05 1983-04-08 Onera (Off Nat Aerospatiale) Pneumatic measuring bridge e.g. for gas temp. - has two branches each including enclosure imposing load loss as function of flow, and supply providing alternate flow

Also Published As

Publication number Publication date
FR2308090B1 (en) 1978-04-21

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