MX172280B - Aparato y metodo para la medida de la conductividad termica de un gas - Google Patents

Aparato y metodo para la medida de la conductividad termica de un gas

Info

Publication number
MX172280B
MX172280B MX019399A MX1939990A MX172280B MX 172280 B MX172280 B MX 172280B MX 019399 A MX019399 A MX 019399A MX 1939990 A MX1939990 A MX 1939990A MX 172280 B MX172280 B MX 172280B
Authority
MX
Mexico
Prior art keywords
katharometer
changes
gas
thermal conductivity
temperature
Prior art date
Application number
MX019399A
Other languages
English (en)
Inventor
Raynald Hachey
Daniel Lamarre
Jacques Marcotte
Original Assignee
Alcan Int Ltd
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 Int Ltd filed Critical Alcan Int Ltd
Publication of MX172280B publication Critical patent/MX172280B/es

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

Abstract

La presente invención se refiere a aparato para la medida de la conductividad térmica de un gas de prueba que comprende un catarómetro con un recinto en su interior con una entrada y una salida; un catarómetro termistor montado en el recinto, conductores eléctricos para que el termistor pase a través de las paredes del recinto, pero eléctricamente aislado del recinto y del catarómetro; elementos para proveer un gas de prueba al interior del recinto; elementos para proveer energía eléctrica al termistor a través de los conductores eléctricos, para calentar el termistor a una temperatura previamente determinada; elementos de control para mantener al termistor a una temperatura previamente determinada por diferentes conductividades térmicas del gas de prueba; y elementos para medir la cantidad de energía requerida para mantener el termistor a una temperatura previamente determinada; caracterizado porque incluye además elementos para mantener la temperatura de los conductores eléctricos en un punto adyacente al punto en el cual los conductores eléctricos pasan a través de las paredes del recinto de forma isotérmica con el catarómetro y entre unos y otros.
MX019399A 1989-02-06 1990-02-06 Aparato y metodo para la medida de la conductividad termica de un gas MX172280B (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
MX172280B true MX172280B (es) 1993-12-10

Family

ID=26975664

Family Applications (1)

Application Number Title Priority Date Filing Date
MX019399A MX172280B (es) 1989-02-06 1990-02-06 Aparato y metodo para la medida de la conductividad termica de un gas

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)

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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
CA2184055C (en) * 1994-12-29 2001-12-18 Mitsuteru Kimura Humidity sensor
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
DE50207022D1 (de) * 2001-07-16 2006-07-06 Werth Messtechnik Gmbh Koordinatenmessgerät mit zusatzwärmequelle
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
US8878598B2 (en) 2010-12-28 2014-11-04 British Virgin Islands Central Digital Inc. Sensing module
TW201227753A (en) * 2010-12-28 2012-07-01 British Virgin Islands Central Digital Inc Sensor temperature compensation circuit and method thereof
KR102365955B1 (ko) * 2015-07-21 2022-02-25 한국전력공사 열전도도 측정 장치

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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
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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
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US4541988A (en) * 1983-12-13 1985-09-17 Bacharach Instrument Company Constant temperature catalytic gas detection instrument
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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
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Also Published As

Publication number Publication date
US5081869A (en) 1992-01-21
CA2009260C (en) 1996-09-17
MY105178A (en) 1994-08-30
KR0183398B1 (ko) 1999-05-15
ATE117083T1 (de) 1995-01-15
CA2009260A1 (en) 1990-08-06
AU631176B2 (en) 1992-11-19
NO900569D0 (no) 1990-02-06
NO302320B1 (no) 1998-02-16
ES2069678T3 (es) 1995-05-16
EP0382414A2 (en) 1990-08-16
BR9000506A (pt) 1991-01-15
KR900013305A (ko) 1990-09-05
EP0382414B1 (en) 1995-01-11
JP2928306B2 (ja) 1999-08-03
EP0382414A3 (en) 1991-10-09
AU4915990A (en) 1990-08-09
JPH0361843A (ja) 1991-03-18
NO900569L (no) 1990-08-07
DE69015838T2 (de) 1995-08-10
DE69015838D1 (de) 1995-02-23

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