JPS56148047A - Thermal conductivity type gas detector - Google Patents

Thermal conductivity type gas detector

Info

Publication number
JPS56148047A
JPS56148047A JP5149080A JP5149080A JPS56148047A JP S56148047 A JPS56148047 A JP S56148047A JP 5149080 A JP5149080 A JP 5149080A JP 5149080 A JP5149080 A JP 5149080A JP S56148047 A JPS56148047 A JP S56148047A
Authority
JP
Japan
Prior art keywords
gas
thermal conductivity
conductivity type
type gas
outputs
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.)
Pending
Application number
JP5149080A
Other languages
Japanese (ja)
Inventor
Junji Koyama
Tomoyuki Umezawa
Satoru Kitajima
Teruhisa Kojima
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.)
KOUMIYOU RIKAGAKU KOGYO KK
Tokyo Gas Co Ltd
Original Assignee
KOUMIYOU RIKAGAKU KOGYO KK
Tokyo Gas Co 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
Application filed by KOUMIYOU RIKAGAKU KOGYO KK, Tokyo Gas Co Ltd filed Critical KOUMIYOU RIKAGAKU KOGYO KK
Priority to JP5149080A priority Critical patent/JPS56148047A/en
Publication of JPS56148047A publication Critical patent/JPS56148047A/en
Pending 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

Landscapes

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

Abstract

PURPOSE:To draw only the output component resulting from the gas being detected, by providing n sets of thermal conductivity type gas detectors of operating temperature points different from each other, and calculating and processing the detection outputs thereof. CONSTITUTION:Supposing there are two kinds of gases, the gas to be detected and a detection disturbing gas, in the atmosphere in which two sets of thermal conductivity type gas detectors 1 and 2 having gas detecting elements of operating temperature points different from each other are arranged, the outputs proportional to respective gas concentrations are obtained as detection outputs V1 and V2. Therefore, the coefficients n1 and n2 of respective coefficient multipliers 16 and 26 are properly selected so that the solution of the two-element linear equation formed therefrom can be obtained, and operation is carried out so that the term of the detection disturbing gas becomes zero, then the output V0 is displayed on an indicator 4. Said method for the case where two kinds of gases exist can be applied to the case where n kinds of gases exist if the outputs obtained from n sets of thermal conductivity type gas detectors of operating temperature points different from each other are formed into an n-element linear equation, and coefficient multipliers and an arithmetic element are combined so that the solution thereof can be obtained.
JP5149080A 1980-04-18 1980-04-18 Thermal conductivity type gas detector Pending JPS56148047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5149080A JPS56148047A (en) 1980-04-18 1980-04-18 Thermal conductivity type gas detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5149080A JPS56148047A (en) 1980-04-18 1980-04-18 Thermal conductivity type gas detector

Publications (1)

Publication Number Publication Date
JPS56148047A true JPS56148047A (en) 1981-11-17

Family

ID=12888404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5149080A Pending JPS56148047A (en) 1980-04-18 1980-04-18 Thermal conductivity type gas detector

Country Status (1)

Country Link
JP (1) JPS56148047A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58206957A (en) * 1982-05-28 1983-12-02 Toshiba Corp Analyzer
JPS62162661U (en) * 1986-04-04 1987-10-16
JP2001091487A (en) * 1999-09-20 2001-04-06 Yazaki Corp Gas detector
WO2004046706A1 (en) * 2002-11-21 2004-06-03 Matsushita Electric Industrial Co., Ltd. Gas detector
JP2005201648A (en) * 2004-01-13 2005-07-28 Tokyo Gas Co Ltd Heating value calculation device, its method and heating value measuring system
JP2006112911A (en) * 2004-10-14 2006-04-27 Riken Keiki Co Ltd Gas detector for modified fuel cell
WO2009119087A1 (en) * 2008-03-26 2009-10-01 株式会社デンソー Concentration sensor device and concentration detection method
JP2010078378A (en) * 2008-09-24 2010-04-08 Honda Motor Co Ltd Granular substance detecting sensor
JP2010203979A (en) * 2009-03-04 2010-09-16 Denso Corp Mixture ratio calculation device, and method of calculating mixture ratio by the same
JP2010210285A (en) * 2009-03-06 2010-09-24 Denso Corp Method and device for detecting concentration of mixed fluid
JP2011196714A (en) * 2010-03-17 2011-10-06 Yamatake Corp Heat value calculation formula forming system, heat value calculation formula forming method, heat value measuring system, and heat value measuring method
US8578761B2 (en) 2008-03-26 2013-11-12 Denso Corporation Concentration sensor device and concentration detecting method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4952699A (en) * 1972-09-19 1974-05-22
JPS5020695B2 (en) * 1971-08-05 1975-07-17

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5020695B2 (en) * 1971-08-05 1975-07-17
JPS4952699A (en) * 1972-09-19 1974-05-22

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58206957A (en) * 1982-05-28 1983-12-02 Toshiba Corp Analyzer
JPS62162661U (en) * 1986-04-04 1987-10-16
JP2001091487A (en) * 1999-09-20 2001-04-06 Yazaki Corp Gas detector
WO2004046706A1 (en) * 2002-11-21 2004-06-03 Matsushita Electric Industrial Co., Ltd. Gas detector
US7028530B2 (en) 2002-11-21 2006-04-18 Matsushita Electric Industrial Co., Ltd. Gas detector
JP2005201648A (en) * 2004-01-13 2005-07-28 Tokyo Gas Co Ltd Heating value calculation device, its method and heating value measuring system
JP2006112911A (en) * 2004-10-14 2006-04-27 Riken Keiki Co Ltd Gas detector for modified fuel cell
WO2009119087A1 (en) * 2008-03-26 2009-10-01 株式会社デンソー Concentration sensor device and concentration detection method
US8578761B2 (en) 2008-03-26 2013-11-12 Denso Corporation Concentration sensor device and concentration detecting method
JP2010078378A (en) * 2008-09-24 2010-04-08 Honda Motor Co Ltd Granular substance detecting sensor
JP2010203979A (en) * 2009-03-04 2010-09-16 Denso Corp Mixture ratio calculation device, and method of calculating mixture ratio by the same
JP2010210285A (en) * 2009-03-06 2010-09-24 Denso Corp Method and device for detecting concentration of mixed fluid
JP2011196714A (en) * 2010-03-17 2011-10-06 Yamatake Corp Heat value calculation formula forming system, heat value calculation formula forming method, heat value measuring system, and heat value measuring method

Similar Documents

Publication Publication Date Title
JPS56148047A (en) Thermal conductivity type gas detector
JPS5558447A (en) Gas constituent detector
DE2967127D1 (en) Methods and apparatus for detecting an incipient fire condition
JPS5332789A (en) Method and apparatus for measuring of stress of white color x-ray
JPS649317A (en) Exhaust gas flow rate detector
US2817229A (en) Sorbtion gas analysis apparatus
JPS5432343A (en) Light reflecting object detector
YU53282A (en) Measuring arrangement for analytical measurement, consisting of an integrated sensor and several measuring cells
DE3909974A1 (en) Measuring arrangement and method for measuring the solid mass flow of flowing gas-solid mixtures
JPS55113949A (en) Flaw detector for cast iron pipe
JPH0239249Y2 (en)
JPS533893A (en) Constant speed analyzer by electric pulsation
JPS55115700A (en) Leakage position estimating device for pipeline
JPS5558458A (en) Method of automatic analysis
Sauer A reply to Hynson
JPS57160054A (en) Flaw detector
JPS531071A (en) Thermal noise thermometer
SU575566A1 (en) Device for detecting liquids and gases
SU442201A1 (en) Device to control the fermentation process
JPS57149969A (en) Crest value detector
JPS5723118A (en) Detection system for scattered error data
JPS5636073A (en) Detecting method for magnetism
JPS5749847A (en) Discriminating device for reducing gas and humidity
Joyce et al. Fluidic sensors for life support systems
JPS52129590A (en) Analytical apparatus