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ES2069678T3 - Metodo y aparato para la medicion de la conductividad termica de gases. - Google Patents

Metodo y aparato para la medicion de la conductividad termica de gases.

Info

Publication number
ES2069678T3
ES2069678T3 ES90301086T ES90301086T ES2069678T3 ES 2069678 T3 ES2069678 T3 ES 2069678T3 ES 90301086 T ES90301086 T ES 90301086T ES 90301086 T ES90301086 T ES 90301086T ES 2069678 T3 ES2069678 T3 ES 2069678T3
Authority
ES
Spain
Prior art keywords
katharometer
changes
temperature
new
amplifier
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 - Lifetime
Application number
ES90301086T
Other languages
English (en)
Inventor
Raynald Hachey
Daniel Lamarre
Jacques Marcotte
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.)
Rio Tinto Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
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
Priority claimed from US07/307,318 external-priority patent/US4918974A/en
Application filed by Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Application granted granted Critical
Publication of ES2069678T3 publication Critical patent/ES2069678T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G01N27/185—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 using a catharometer
    • 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

Landscapes

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

Abstract

SE PROVEEN NUEVOS METODOS Y NUEVOS APARATOS CATAROMETROS PARA LA MEDICION DE LA CONDUCTIVIDAD TERMICA DE GASES. EL APARATO UTILIZA UN UNICO ELEMENTO CATAROMETRICO (10), QUE SE MANTIENE A UNA TEMPERATURA DE OPERACION CONSTANTE. SI LA TEMPERATURA DEL ELEMENTO (10) CAMBIA, CAMBIA SU RESISTENCIA, DEBIDO AL PASAJE DE UN GAS DE DISTINTA CARACTERISTICA TERMICA, UN AMPLIFICADOR (32) CAMBIA LA POTENCIA SUMINISTRADA AL ELEMENTO DE CATAROMETRO (10) PARA REESTABLECER LA TEMPERATURA PREDETERMINADA, SIENDO LA SALIDA DEL AMPLIFICADOR (32) UNA MEDICION DE LA CONDUCTIVIDAD TERMICA DEL GAS. POR LO TANTO LA OPERACION DEL APARATO ES INDEPENDIENTE DE LA CARACTERISTICA DE RESISTENCIA/TEMPERATURA DEL ELEMENTO (10) Y ES RELATIVAMENTE INSENSIBLE A LOS CAMBIOS DE TEMPERATURA AMBIENTE. PREFERENTEMENTE SE UTILIZA UN TERMISTOR COMO ELEMENTO CATAROMETRICO (10). SE REVELAN VARIOS CIRCUITOS DE OPERACION PARA EL CATAROMETRO. EL INVENTO TAMBIEN PROVEE NUEVOS METODOS DE OPERACION PARA CATAROMETROS PARA REDUCIR LA SENSIBILIDAD DE LAS MEDICIONES EN CUANTO A PERDIDAS TERMICAS Y CAMBIOS DE TEMPERATURA EN EL CUERPO DEL CATAROMETRO, Y PARA PERMITIR UNA COMPARACION DE TENSIONES A TRAVES DE UNA CONEXION EN SERIE DEL ELEMENTO DE CATAROMETRO (10) Y LA RESISTENCIA (18) A UN PUNTO DE REFERENCIA COMUN.
ES90301086T 1989-02-06 1990-02-02 Metodo y aparato para la medicion de la conductividad termica de gases. Expired - Lifetime ES2069678T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/307,318 US4918974A (en) 1989-02-06 1989-02-06 Method and apparatus for the measurement of the thermal conductivity of gases
US07/448,548 US5081869A (en) 1989-02-06 1989-12-11 Method and apparatus for the measurement of the thermal conductivity of gases

Publications (1)

Publication Number Publication Date
ES2069678T3 true ES2069678T3 (es) 1995-05-16

Family

ID=26975664

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90301086T Expired - Lifetime ES2069678T3 (es) 1989-02-06 1990-02-02 Metodo y aparato para la medicion de la conductividad termica de gases.

Country Status (13)

Country Link
US (1) US5081869A (es)
EP (1) EP0382414B1 (es)
JP (1) JP2928306B2 (es)
KR (1) KR0183398B1 (es)
AT (1) ATE117083T1 (es)
AU (1) AU631176B2 (es)
BR (1) BR9000506A (es)
CA (1) CA2009260C (es)
DE (1) DE69015838T2 (es)
ES (1) ES2069678T3 (es)
MX (1) MX172280B (es)
MY (1) MY105178A (es)
NO (1) NO302320B1 (es)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2806765B2 (ja) * 1993-11-24 1998-09-30 日本電気株式会社 熱伝導率測定装置および測定方法
DE69516274T2 (de) * 1994-12-29 2000-08-31 Mitsuteru Kimura Feuchtigkeitssensor
JP3114139B2 (ja) * 1995-01-24 2000-12-04 株式会社山武 熱伝導率計
US5834627A (en) * 1996-12-17 1998-11-10 Sandia Corporation Calorimetric gas sensor
IT1312311B1 (it) 1999-05-07 2002-04-15 Thermoquest Italia Spa Dispositivo per la misurazione della conducibilita' termica di unfluido
US6357279B1 (en) 2001-01-29 2002-03-19 Leco Corporation Control circuit for thermal conductivity cell
DE10119788C2 (de) * 2001-04-23 2003-08-07 Siemens Ag Wärmeleitfähigkeitsdetektor
US20040184039A1 (en) * 2001-07-16 2004-09-23 Ralf Christoph Co-ordinate measuring device with additional heat source
US20040163445A1 (en) * 2002-10-17 2004-08-26 Dimeo Frank Apparatus and process for sensing fluoro species in semiconductor processing systems
US7080545B2 (en) * 2002-10-17 2006-07-25 Advanced Technology Materials, Inc. Apparatus and process for sensing fluoro species in semiconductor processing systems
US7193187B2 (en) * 2004-02-09 2007-03-20 Advanced Technology Materials, Inc. Feedback control system and method for maintaining constant resistance operation of electrically heated elements
US20060211253A1 (en) * 2005-03-16 2006-09-21 Ing-Shin Chen Method and apparatus for monitoring plasma conditions in an etching plasma processing facility
WO2007041454A2 (en) * 2005-10-03 2007-04-12 Advanced Technology Materials, Inc. Systems and methods for determination of endpoint of chamber cleaning processes
US20080291966A1 (en) * 2007-05-24 2008-11-27 Engel Steven J Thermal conductivity detector (TCD) having compensated constant temperature element
JP2008311372A (ja) * 2007-06-13 2008-12-25 Nomura Micro Sci Co Ltd 超純水中の溶存窒素の測定方法及び溶存窒素測定装置
EP2037233A1 (en) 2007-09-14 2009-03-18 General Electric Company Fluid detector
JP5165627B2 (ja) * 2009-03-30 2013-03-21 アズビル株式会社 物性値測定システム及び物性値測定方法
US20110079074A1 (en) * 2009-05-28 2011-04-07 Saroj Kumar Sahu Hydrogen chlorine level detector
WO2010138942A2 (en) * 2009-05-28 2010-12-02 Deeya Energy, Inc. Redox flow cell rebalancing
WO2011064310A1 (de) * 2009-11-25 2011-06-03 Siemens Aktiengesellschaft Verfahren und anordnung zur gaschromatographischen analyse einer gasprobe
TW201227753A (en) * 2010-12-28 2012-07-01 British Virgin Islands Central Digital Inc Sensor temperature compensation circuit and method thereof
US8878598B2 (en) 2010-12-28 2014-11-04 British Virgin Islands Central Digital Inc. Sensing module
KR102365955B1 (ko) * 2015-07-21 2022-02-25 한국전력공사 열전도도 측정 장치

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864959A (en) * 1971-12-16 1975-02-11 Pye Ltd Thermal conductivity detector apparatus
GB1557921A (en) * 1977-01-10 1979-12-19 British Steel Corp Gas monitors
US4164862A (en) * 1977-11-25 1979-08-21 Jackson Milton L Multicomponent thermal conductivity analyzer
US4470298A (en) * 1978-01-30 1984-09-11 Gomidas Jibelian Method and apparatus for analyzing gases
JPS5716343A (en) * 1980-07-04 1982-01-27 Yokogawa Hokushin Electric Corp Thermal conductivity detector
JPS57189289A (en) * 1981-05-15 1982-11-20 Toubishi Kogyo Kk Gas detection monitor
US4461166A (en) * 1982-02-26 1984-07-24 Delta Associates, Inc. Dynamic current drive method for powering thermal conductivity detectors
US4541988A (en) * 1983-12-13 1985-09-17 Bacharach Instrument Company Constant temperature catalytic gas detection instrument
US4533520A (en) * 1984-07-02 1985-08-06 Mine Safety Appliances Company Circuit for constant temperature operation of a catalytic combustible gas detector
GB2185577B (en) * 1986-01-21 1989-11-29 Draegerwerk Ag Method and apparatus for detection of combustible gases
US4685325A (en) * 1986-02-03 1987-08-11 Aluminum Company Of America Measurement of gas content in molten metal using a constant current source
DE3632698A1 (de) * 1986-09-26 1988-03-31 Draegerwerk Ag Vorrichtung zur automatischen kalibrierung eines gassensors
US4722217A (en) * 1986-10-17 1988-02-02 The Boc Group, Inc. Method and apparatus for calibrating gas monitors
US4813267A (en) * 1987-03-05 1989-03-21 The Perkin-Elmer Corporation Thermal conductivity detector
CA1276235C (en) * 1987-05-28 1990-11-13 Ghyslain Dube Probe for the determination of gas concentration in molten metal
US4829810A (en) * 1988-01-04 1989-05-16 Aluminum Company Of America Filament drive circuit

Also Published As

Publication number Publication date
AU631176B2 (en) 1992-11-19
EP0382414B1 (en) 1995-01-11
MY105178A (en) 1994-08-30
JP2928306B2 (ja) 1999-08-03
AU4915990A (en) 1990-08-09
KR0183398B1 (ko) 1999-05-15
MX172280B (es) 1993-12-10
EP0382414A2 (en) 1990-08-16
ATE117083T1 (de) 1995-01-15
NO900569D0 (no) 1990-02-06
NO302320B1 (no) 1998-02-16
CA2009260C (en) 1996-09-17
EP0382414A3 (en) 1991-10-09
JPH0361843A (ja) 1991-03-18
DE69015838T2 (de) 1995-08-10
DE69015838D1 (de) 1995-02-23
BR9000506A (pt) 1991-01-15
US5081869A (en) 1992-01-21
NO900569L (no) 1990-08-07
CA2009260A1 (en) 1990-08-06
KR900013305A (ko) 1990-09-05

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