JPS5689042A - Gas detector - Google Patents

Gas detector

Info

Publication number
JPS5689042A
JPS5689042A JP16734179A JP16734179A JPS5689042A JP S5689042 A JPS5689042 A JP S5689042A JP 16734179 A JP16734179 A JP 16734179A JP 16734179 A JP16734179 A JP 16734179A JP S5689042 A JPS5689042 A JP S5689042A
Authority
JP
Japan
Prior art keywords
reflection
flat plate
plate
make
reflection means
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
JP16734179A
Other languages
Japanese (ja)
Inventor
Kouji Shinohara
Hiroyuki Ishizaki
Hirobumi Kashiwara
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16734179A priority Critical patent/JPS5689042A/en
Publication of JPS5689042A publication Critical patent/JPS5689042A/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
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis

Abstract

PURPOSE:To make the gas detector inexpensive and make its optical axis alignment easy by constituting the infrared ray radiation system opposedly disposed by way of the space where the gas to be detected exists and the reflection means of the infrared ray detector provided with the reflection means with a flat plate. CONSTITUTION:A flat plate 1 as a reflection means is constituted essentially of a base plate 2 of a disc shape or the like made of plastics of, for example, 3-5m diameters. Reflection coating 4 is coated on the plate surface 3 in the base plate 2, and the flat plate 1 is so arranged as to be supported by a supporting member 5. In this way, the reflection means is formed into the flat plate coated with the reflection coating, by which said plate is made considerably inexpensive as compared to a retroreflector, and since it is not so difficult to make the diameter of the reflection surface one digit larger, the optical axis alignment is made extremely easy.
JP16734179A 1979-12-21 1979-12-21 Gas detector Pending JPS5689042A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16734179A JPS5689042A (en) 1979-12-21 1979-12-21 Gas detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16734179A JPS5689042A (en) 1979-12-21 1979-12-21 Gas detector

Publications (1)

Publication Number Publication Date
JPS5689042A true JPS5689042A (en) 1981-07-20

Family

ID=15847926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16734179A Pending JPS5689042A (en) 1979-12-21 1979-12-21 Gas detector

Country Status (1)

Country Link
JP (1) JPS5689042A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0251045A (en) * 1988-08-12 1990-02-21 Mitsui Eng & Shipbuild Co Ltd Method and apparatus for environment measurement
WO2010055715A1 (en) * 2008-11-14 2010-05-20 株式会社Ihi Apparatus for determining concentration of gaseous component
US8395771B2 (en) 2008-11-14 2013-03-12 Ihi Corporation Apparatus and method for determining concentration of gaseous component
JP2013245952A (en) * 2012-05-23 2013-12-09 Mitsubishi Heavy Ind Ltd Concentration measuring device and denitrification device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0251045A (en) * 1988-08-12 1990-02-21 Mitsui Eng & Shipbuild Co Ltd Method and apparatus for environment measurement
WO2010055715A1 (en) * 2008-11-14 2010-05-20 株式会社Ihi Apparatus for determining concentration of gaseous component
JP2010117303A (en) * 2008-11-14 2010-05-27 Ihi Corp Apparatus for measuring concentration of gas component
CN102216755A (en) * 2008-11-14 2011-10-12 株式会社Ihi Apparatus for determining concentration of gaseous component
AU2009315123B2 (en) * 2008-11-14 2012-08-09 Ihi Corporation Apparatus for determining concentration of gaseous component
US8395771B2 (en) 2008-11-14 2013-03-12 Ihi Corporation Apparatus and method for determining concentration of gaseous component
KR101244397B1 (en) 2008-11-14 2013-03-18 가부시키가이샤 아이에이치아이 Apparatus for determining concentration of gaseous component
JP2013245952A (en) * 2012-05-23 2013-12-09 Mitsubishi Heavy Ind Ltd Concentration measuring device and denitrification device

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