CA2746335C - Procede permettant de detecter la composition et la pression d'un gaz - Google Patents

Procede permettant de detecter la composition et la pression d'un gaz Download PDF

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Publication number
CA2746335C
CA2746335C CA2746335A CA2746335A CA2746335C CA 2746335 C CA2746335 C CA 2746335C CA 2746335 A CA2746335 A CA 2746335A CA 2746335 A CA2746335 A CA 2746335A CA 2746335 C CA2746335 C CA 2746335C
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CA
Canada
Prior art keywords
gas
variable electrical
gas pressure
electrical resistor
sensor assembly
Prior art date
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Active
Application number
CA2746335A
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English (en)
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CA2746335A1 (fr
Inventor
Loeic Le Noc
Jean-Francois Viens
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Institut National dOptique
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Institut National dOptique
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Publication of CA2746335A1 publication Critical patent/CA2746335A1/fr
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Publication of CA2746335C publication Critical patent/CA2746335C/fr
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G01L11/002—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by thermal means, e.g. hypsometer
    • 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

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  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • Measuring Fluid Pressure (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

L'invention concerne un procédé permettant de détecter la composition d'un gaz et la pression d'un gaz, sur la base des constantes thermiques d'une résistance électrique variable. Le procédé permettant de détecter la composition et la pression d'un gaz consiste à surveiller une résistance électrique variable dont la réponse thermique dynamique est déterminée par la conductivité thermique et la capacité thermique du gaz environnant d'un environnement atmosphérique donné. Dans le domaine thermique, le capteur possède une caractéristique passe-bas, dont le retard de phase est déterminé par les caractéristiques thermodynamiques du gaz environnant comme la composition et la pression. La présente invention peut servir de procédé permettant de détecter la composition d'un gaz. La présente invention peut également servir de procédé de détection de la pression d'un gaz.
CA2746335A 2008-12-19 2008-12-19 Procede permettant de detecter la composition et la pression d'un gaz Active CA2746335C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA2008/002231 WO2010069035A1 (fr) 2008-12-19 2008-12-19 Procédé permettant de détecter la composition et la pression d'un gaz

Publications (2)

Publication Number Publication Date
CA2746335A1 CA2746335A1 (fr) 2010-06-24
CA2746335C true CA2746335C (fr) 2014-05-13

Family

ID=42268213

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2746335A Active CA2746335C (fr) 2008-12-19 2008-12-19 Procede permettant de detecter la composition et la pression d'un gaz

Country Status (2)

Country Link
CA (1) CA2746335C (fr)
WO (1) WO2010069035A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6938493B2 (en) * 1997-07-21 2005-09-06 Helix Technology Corporation Apparatus and methods for heat loss pressure measurement
JP2002310826A (ja) * 2001-02-08 2002-10-23 Tgk Co Ltd 圧力センサの調整方法
US20060021444A1 (en) * 2004-07-28 2006-02-02 Helix Technology Corporation Method of operating a resistive heat-loss pressure sensor
US7385199B2 (en) * 2005-09-26 2008-06-10 Teledyne Licensing, Llc Microbolometer IR focal plane array (FPA) with in-situ mirco vacuum sensor and method of fabrication
US7331237B2 (en) * 2006-02-01 2008-02-19 Brooks Automation, Inc. Technique for improving Pirani gauge temperature compensation over its full pressure range

Also Published As

Publication number Publication date
WO2010069035A1 (fr) 2010-06-24
CA2746335A1 (fr) 2010-06-24

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