JPS57116242A - Gas sensor - Google Patents

Gas sensor

Info

Publication number
JPS57116242A
JPS57116242A JP285781A JP285781A JPS57116242A JP S57116242 A JPS57116242 A JP S57116242A JP 285781 A JP285781 A JP 285781A JP 285781 A JP285781 A JP 285781A JP S57116242 A JPS57116242 A JP S57116242A
Authority
JP
Japan
Prior art keywords
gas
cacl2
air
ethanole
inflammable
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
JP285781A
Other languages
Japanese (ja)
Inventor
Tadahiko Mitsuyoshi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP285781A priority Critical patent/JPS57116242A/en
Publication of JPS57116242A publication Critical patent/JPS57116242A/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
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0011—Sample conditioning
    • G01N33/0014—Sample conditioning by eliminating a gas

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (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 highly precisely detect concentration of inflammable gas in air without being affected by ethanole, by a method wherein a gas filter, mounted around a gas responsing product, is formed by the use of CaCl2. CONSTITUTION:A gas filter, mounted around an inflammable gas responsing product 1, is formed by the use of CaCl2. Ethanole in air, or gas, is caused to make a chemical reaction to CaCl2 of the gas filter 2 as shown in a formula to prepare a molecular compound to selectively free of the ethanole. Gas to be detected, e.g., hydrogen, carbon monoxide, methane, butane and the like, does not react to CaCl2, and as a result, it is prevented from damaging a gas detecting sensitivity. CaCl2 gets rid of moisture in air as well, and this permits it to be prevented from changing of its detecting sensitivity to gas to be detected due to humidity in air to improve reliability of a gas sensor. Additionally, it has an ammonia gas absorption ability, which results in enabling to perform a high- precise detection of inflammable gas being not affected thereby.
JP285781A 1981-01-12 1981-01-12 Gas sensor Pending JPS57116242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP285781A JPS57116242A (en) 1981-01-12 1981-01-12 Gas sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP285781A JPS57116242A (en) 1981-01-12 1981-01-12 Gas sensor

Publications (1)

Publication Number Publication Date
JPS57116242A true JPS57116242A (en) 1982-07-20

Family

ID=11541048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP285781A Pending JPS57116242A (en) 1981-01-12 1981-01-12 Gas sensor

Country Status (1)

Country Link
JP (1) JPS57116242A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3604594A1 (en) * 1986-02-14 1987-08-20 Schott Glaswerke Thin-film gas sensors having high measuring sensitivity as multilayer systems based on dipped indium oxide layers for detection of gas traces in carrier gases
WO1999041603A1 (en) * 1998-02-11 1999-08-19 E + E Elektronik Ges.Mbh Component for measuring gas concentrations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3604594A1 (en) * 1986-02-14 1987-08-20 Schott Glaswerke Thin-film gas sensors having high measuring sensitivity as multilayer systems based on dipped indium oxide layers for detection of gas traces in carrier gases
WO1999041603A1 (en) * 1998-02-11 1999-08-19 E + E Elektronik Ges.Mbh Component for measuring gas concentrations

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