JPS51127787A - Smoke sensor - Google Patents

Smoke sensor

Info

Publication number
JPS51127787A
JPS51127787A JP5155875A JP5155875A JPS51127787A JP S51127787 A JPS51127787 A JP S51127787A JP 5155875 A JP5155875 A JP 5155875A JP 5155875 A JP5155875 A JP 5155875A JP S51127787 A JPS51127787 A JP S51127787A
Authority
JP
Japan
Prior art keywords
smoke sensor
stable
time
long period
moving part
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
JP5155875A
Other languages
Japanese (ja)
Inventor
Shunsaku Nakauchi
Masanori Hirasawa
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.)
KOKUSAI GIJIYUTSU KAIHATSU KK
Kokusai Gijutsu Kaihatsu Co Ltd
Original Assignee
KOKUSAI GIJIYUTSU KAIHATSU KK
Kokusai Gijutsu Kaihatsu 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 KOKUSAI GIJIYUTSU KAIHATSU KK, Kokusai Gijutsu Kaihatsu Co Ltd filed Critical KOKUSAI GIJIYUTSU KAIHATSU KK
Priority to JP5155875A priority Critical patent/JPS51127787A/en
Publication of JPS51127787A publication Critical patent/JPS51127787A/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
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE:To provide a smoke sensor having no mechanical moving part and stable for a long period of time.
JP5155875A 1975-04-30 1975-04-30 Smoke sensor Pending JPS51127787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5155875A JPS51127787A (en) 1975-04-30 1975-04-30 Smoke sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5155875A JPS51127787A (en) 1975-04-30 1975-04-30 Smoke sensor

Publications (1)

Publication Number Publication Date
JPS51127787A true JPS51127787A (en) 1976-11-08

Family

ID=12890309

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5155875A Pending JPS51127787A (en) 1975-04-30 1975-04-30 Smoke sensor

Country Status (1)

Country Link
JP (1) JPS51127787A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57128831A (en) * 1980-12-18 1982-08-10 Cerberus Ag Smoke sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49106382A (en) * 1973-02-09 1974-10-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49106382A (en) * 1973-02-09 1974-10-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57128831A (en) * 1980-12-18 1982-08-10 Cerberus Ag Smoke sensor

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