JPS5716343A - Thermal conductivity detector - Google Patents

Thermal conductivity detector

Info

Publication number
JPS5716343A
JPS5716343A JP9139780A JP9139780A JPS5716343A JP S5716343 A JPS5716343 A JP S5716343A JP 9139780 A JP9139780 A JP 9139780A JP 9139780 A JP9139780 A JP 9139780A JP S5716343 A JPS5716343 A JP S5716343A
Authority
JP
Japan
Prior art keywords
thermal conductivity
differential amplifier
gas
detector element
sample gas
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
JP9139780A
Other languages
Japanese (ja)
Inventor
Yuzo Ozaki
Takashi Kawai
Yasuo Kitahata
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP9139780A priority Critical patent/JPS5716343A/en
Publication of JPS5716343A publication Critical patent/JPS5716343A/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 Using Thermal Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE:To eliminate the troubles such as overheating or fusing of the system, by a method wherein a thin film resistor is mounted on the insulated base-plate on the highly heat conductive heat sink as the thermal conductivity detector element. CONSTITUTION:A heater element 22 and a detector element 23 are mounted on an insulated base-plate 21 and a heat sink is provided under it. This thermal conductivity detector element is set at the flow paths of a comparing gas 2 and a sample gas 3. Only the carrier gas is let flow and the temperatures of the detector elements 10a and 10c are made the same by controlling the electric current through heater elements 11a and 11b by means of the output control of a differential amplifier 5. Then let the carrier gas with sample gas flow and unbalanced voltage is generated at the wheatstone bridge in proportion to the thermal conductivity of sample gas. This unbalanced voltage is led into the differential amplifier 5 and the whole system is balanced again by supplying the deprived calory with the control of a transistor 13 in response to the output of the differential amplifier. The amount of supplied calory is detected by the amplifier 8 connected to the heater circuit and then the value of the signal to be measured is generated.
JP9139780A 1980-07-04 1980-07-04 Thermal conductivity detector Pending JPS5716343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9139780A JPS5716343A (en) 1980-07-04 1980-07-04 Thermal conductivity detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9139780A JPS5716343A (en) 1980-07-04 1980-07-04 Thermal conductivity detector

Publications (1)

Publication Number Publication Date
JPS5716343A true JPS5716343A (en) 1982-01-27

Family

ID=14025243

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9139780A Pending JPS5716343A (en) 1980-07-04 1980-07-04 Thermal conductivity detector

Country Status (1)

Country Link
JP (1) JPS5716343A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120688A (en) * 1983-12-02 1985-06-28 Hitachi Ltd Recording regenerator of color vided signal
JPH01105151A (en) * 1987-05-06 1989-04-21 Nec Corp Heat conductivity and temperature measuring probe and its manufacture
EP0382414A2 (en) * 1989-02-06 1990-08-16 Alcan International Limited Method and apparatus for the measurement of the thermal conductivity of gases
JPH02213759A (en) * 1989-02-14 1990-08-24 Shimadzu Corp Thermal conductivity type detector
US5535614A (en) * 1993-11-11 1996-07-16 Nok Corporation Thermal conductivity gas sensor for measuring fuel vapor content
CN101825592A (en) * 2010-04-02 2010-09-08 中国科学院工程热物理研究所 Method and device for testing thermal physical property of single conductive filamentary material by using harmonic method
CN101907589A (en) * 2010-06-25 2010-12-08 中国科学院工程热物理研究所 Harmonic micrometer/nanometre film thermal property test method
CN104034752A (en) * 2014-06-16 2014-09-10 上海大学 Device and method for measuring longitudinal thermal conductivity of film

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120688A (en) * 1983-12-02 1985-06-28 Hitachi Ltd Recording regenerator of color vided signal
JPH01105151A (en) * 1987-05-06 1989-04-21 Nec Corp Heat conductivity and temperature measuring probe and its manufacture
JP2553132B2 (en) * 1987-05-06 1996-11-13 株式会社宇宙環境利用研究所 Thermal conductivity and temperature measurement probe and manufacturing method thereof
EP0382414A2 (en) * 1989-02-06 1990-08-16 Alcan International Limited Method and apparatus for the measurement of the thermal conductivity of gases
JPH02213759A (en) * 1989-02-14 1990-08-24 Shimadzu Corp Thermal conductivity type detector
US5535614A (en) * 1993-11-11 1996-07-16 Nok Corporation Thermal conductivity gas sensor for measuring fuel vapor content
US5644068A (en) * 1993-11-11 1997-07-01 Nok Corporation Gas sensor
CN101825592A (en) * 2010-04-02 2010-09-08 中国科学院工程热物理研究所 Method and device for testing thermal physical property of single conductive filamentary material by using harmonic method
CN101907589A (en) * 2010-06-25 2010-12-08 中国科学院工程热物理研究所 Harmonic micrometer/nanometre film thermal property test method
CN104034752A (en) * 2014-06-16 2014-09-10 上海大学 Device and method for measuring longitudinal thermal conductivity of film

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