JPS562534A - Gas discriminating detector - Google Patents

Gas discriminating detector

Info

Publication number
JPS562534A
JPS562534A JP7858479A JP7858479A JPS562534A JP S562534 A JPS562534 A JP S562534A JP 7858479 A JP7858479 A JP 7858479A JP 7858479 A JP7858479 A JP 7858479A JP S562534 A JPS562534 A JP S562534A
Authority
JP
Japan
Prior art keywords
light
gas
transmitting
reflex mirror
detecting
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
JP7858479A
Other languages
Japanese (ja)
Inventor
Yutaka Ohata
Koichi Mikoshiba
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 Cable Ltd
Original Assignee
Hitachi Cable 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 Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP7858479A priority Critical patent/JPS562534A/en
Publication of JPS562534A publication Critical patent/JPS562534A/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 it possible to identify and detect many kinds of gas at a time by providing light sources, emitting infrared light differing in wavelength, a photodetector, detecting it, and a reflex mirror, reflecting the sent light, and then by connecting them to one another transmitting and receiving optical fibers. CONSTITUTION:To make it possible to identify and detect many kinds of gas, this detector is equipped with light sources 1-1, 1-2...1-n that emit light beams of wavelengths lambda1, lambda2...lambdan equivalent to those of infrared absorption of gases, transmitting optical fiber bundle 2 transmitting beams from them, reflex mirror 3 reflecting light from transmitting optical fiber 4, photo detection fiber 4 photo-detecting light from reflex mirror 3, photodetector 5 detecting the wavelength and light adsorptivity of the detected light and converting them into electric signals, and gas detection space 6 limited between transmitting and receiving optical fibers 2 and 4, and reflex mirror 3. Corresponding to a gas passing through this space 6, light of specific wavelength is absorbed and at a normal temperature, many kinds of gas can be discriminated at a time.
JP7858479A 1979-06-21 1979-06-21 Gas discriminating detector Pending JPS562534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7858479A JPS562534A (en) 1979-06-21 1979-06-21 Gas discriminating detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7858479A JPS562534A (en) 1979-06-21 1979-06-21 Gas discriminating detector

Publications (1)

Publication Number Publication Date
JPS562534A true JPS562534A (en) 1981-01-12

Family

ID=13665951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7858479A Pending JPS562534A (en) 1979-06-21 1979-06-21 Gas discriminating detector

Country Status (1)

Country Link
JP (1) JPS562534A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956151A (en) * 1982-09-25 1984-03-31 Showa Denko Kk Method and device for measuring concentration of gaseous methane
US4567366A (en) * 1982-09-25 1986-01-28 Showa Denko Kabushiki Kaisha Method and apparatus for measuring methane concentration in gas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956151A (en) * 1982-09-25 1984-03-31 Showa Denko Kk Method and device for measuring concentration of gaseous methane
US4567366A (en) * 1982-09-25 1986-01-28 Showa Denko Kabushiki Kaisha Method and apparatus for measuring methane concentration in gas
JPH0220056B2 (en) * 1982-09-25 1990-05-08 Showa Denko Kk

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