IT1013572B - Dispositivo di misura mediante captatore attivo in specie ter moresistente per la misura di pressioni ed altro - Google Patents
Dispositivo di misura mediante captatore attivo in specie ter moresistente per la misura di pressioni ed altroInfo
- Publication number
- IT1013572B IT1013572B IT9557/73A IT955773A IT1013572B IT 1013572 B IT1013572 B IT 1013572B IT 9557/73 A IT9557/73 A IT 9557/73A IT 955773 A IT955773 A IT 955773A IT 1013572 B IT1013572 B IT 1013572B
- Authority
- IT
- Italy
- Prior art keywords
- moresistente
- ter
- species
- measurement device
- active sensor
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
- G01D1/16—Measuring arrangements giving results other than momentary value of variable, of general application giving a value which is a function of two or more values, e.g. product or ratio
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
- G01L21/10—Vacuum gauges by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
- G01N27/18—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested
-
- 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
- G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measuring Fluid Pressure (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7226310A FR2193487A5 (it) | 1972-07-21 | 1972-07-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1013572B true IT1013572B (it) | 1977-03-30 |
Family
ID=9102176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT9557/73A IT1013572B (it) | 1972-07-21 | 1973-07-19 | Dispositivo di misura mediante captatore attivo in specie ter moresistente per la misura di pressioni ed altro |
Country Status (4)
Country | Link |
---|---|
US (1) | US3905230A (it) |
FR (1) | FR2193487A5 (it) |
GB (1) | GB1396462A (it) |
IT (1) | IT1013572B (it) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2308090A1 (fr) * | 1975-04-16 | 1976-11-12 | Onera (Off Nat Aerospatiale) | Perfectionnements aux procedes et dispositifs de mesure de debit de fluide |
NO147929C (no) * | 1976-12-20 | 1983-07-06 | Bronson M Potter | Deteksjonssystem for oljeforurensning. |
US4220041A (en) | 1977-04-07 | 1980-09-02 | Potter Bronson M | Alien liquid detector and control |
AT370332B (de) * | 1977-12-06 | 1983-03-25 | Polyair Produkt Design Gmbh | Sicherheitsskibindung mit einer sohlenplatte |
US4221125A (en) * | 1979-03-09 | 1980-09-09 | Emhart Industries, Inc. | Apparatus and method for detecting the presence of a substance on a liquid surface |
EP0070801A1 (fr) * | 1981-07-13 | 1983-01-26 | Battelle Memorial Institute | Procédé pour déterminer au moins un paramètre instantané d'un fluide lié à l'échange thermique d'une sonde immergée dans ce fluide et dispositif pour la mise en oeuvre de ce procédé |
DE3242506C2 (de) * | 1982-11-18 | 1986-02-27 | Collins, Hans-Jürgen, Prof. Dr.-Ing., 3300 Braunschweig | Verfahren und Vorrichtung zur Bestimmung des Erreichens oder Überschreitens eines vorgegebenen Grenzwertes des in einem Flüssigkeitsgemisch enthaltenen Anteiles mit einer niedrigeren Verdampfungstemperatur als die übrige Flüssigkeit |
US4579002A (en) * | 1984-10-31 | 1986-04-01 | Varian Associates, Inc. | Thermocouple vacuum gauge |
FR2573871B1 (fr) * | 1984-11-23 | 1987-01-30 | Electricite De France | Procede et dispositif de detection de changement de phase |
CN1009579B (zh) * | 1986-11-18 | 1990-09-12 | 张开逊 | 一个与温度变化有关量的pn结传感器 |
DE3639666A1 (de) * | 1986-11-20 | 1988-06-01 | Draegerwerk Ag | Verfahren zur bestimmung einer messgroesse eines stroemenden mediums und messschaltung hierzu |
US5265459A (en) * | 1991-08-22 | 1993-11-30 | The Perkin Elmer Corporation | Single-element thermal conductivity detector |
US5351551A (en) * | 1993-05-27 | 1994-10-04 | The Fredericks Company | Convection thermocouple vacuum gauge |
US5551283A (en) * | 1993-08-10 | 1996-09-03 | Ricoh Seiki Company, Ltd. | Atmosphere measuring device and flow sensor |
EP0698786A1 (en) * | 1994-08-23 | 1996-02-28 | RICOH SEIKI COMPANY, Ltd. | Atmosphere measuring device and flow sensor |
FR2745375B1 (fr) * | 1996-02-28 | 1998-04-17 | Sgs Thomson Microelectronics | Procede de mesure de la vitesse d'ecoulement d'un fluide |
US5654507A (en) * | 1996-07-03 | 1997-08-05 | Board Of Trustees Operating Michigan State University | Pulse width modulated constant temperature anemometer |
EP1144958B1 (de) * | 1998-12-22 | 2004-03-24 | Sensirion AG | Verfahren und sensor zur messung eines massenflusses |
US6542854B2 (en) | 1999-04-30 | 2003-04-01 | Oracle Corporation | Method and mechanism for profiling a system |
JP3672082B2 (ja) * | 2000-09-14 | 2005-07-13 | 理研計器株式会社 | 熱線式ガスセンサーを用いたガス検知警報装置 |
EP1327865A1 (de) * | 2002-01-14 | 2003-07-16 | Abb Research Ltd. | Verfahren zur thermischen Durchflussmessung mit nicht konstanten Heizpulsen |
DE112006000725A5 (de) * | 2005-01-26 | 2008-01-10 | Systec Controls Mess- Und Regelungstechnik Gmbh | Staudrucksonde |
DE102005041427A1 (de) * | 2005-08-31 | 2007-03-01 | Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG | Sensorsimulator |
US7387022B1 (en) | 2007-05-02 | 2008-06-17 | Honeywell International Inc. | Thermal mass flow transducer including PWM-type heater current driver |
JP5078529B2 (ja) * | 2007-09-28 | 2012-11-21 | キヤノン株式会社 | インクジェット記録ヘッドおよびそれを備えるインクジェット記録装置 |
ITVI20110216A1 (it) * | 2011-08-02 | 2013-02-03 | St Microelectronics Srl | Sistema elettronico comprendente una struttura di sensore ed un'interfaccia analogica collegata ad essa con un intervallo di esercizio indipendente dal sensore |
US9835574B2 (en) | 2014-07-02 | 2017-12-05 | Stmicroelectronics S.R.L. | Gas measurement device and measurement method thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3216249A (en) * | 1961-05-18 | 1965-11-09 | Johnson Service Co | Differential pressure responsive signal circuit |
US3246523A (en) * | 1963-12-10 | 1966-04-19 | Joseph D Richard | Pressure rate measuring apparatus |
US3498128A (en) * | 1965-06-28 | 1970-03-03 | Pierre Jean Felix Calvet | Apparatus for measuring a physical quantity by the use of pulsed energy |
FR1577448A (it) * | 1968-05-22 | 1969-08-08 | ||
US3719083A (en) * | 1970-04-01 | 1973-03-06 | Nat Res Dev | Flowmeters |
-
1972
- 1972-07-21 FR FR7226310A patent/FR2193487A5/fr not_active Expired
-
1973
- 1973-07-04 GB GB3187173A patent/GB1396462A/en not_active Expired
- 1973-07-05 US US376416A patent/US3905230A/en not_active Expired - Lifetime
- 1973-07-19 IT IT9557/73A patent/IT1013572B/it active
Also Published As
Publication number | Publication date |
---|---|
DE2334319B2 (de) | 1976-08-12 |
GB1396462A (en) | 1975-06-04 |
DE2334319A1 (de) | 1974-02-07 |
FR2193487A5 (it) | 1974-02-15 |
US3905230A (en) | 1975-09-16 |
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