JPS51136471A - Photocell smoke sensor - Google Patents

Photocell smoke sensor

Info

Publication number
JPS51136471A
JPS51136471A JP5967175A JP5967175A JPS51136471A JP S51136471 A JPS51136471 A JP S51136471A JP 5967175 A JP5967175 A JP 5967175A JP 5967175 A JP5967175 A JP 5967175A JP S51136471 A JPS51136471 A JP S51136471A
Authority
JP
Japan
Prior art keywords
photocell
smoke sensor
chamber
providing
circuit
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.)
Granted
Application number
JP5967175A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5444468B2 (en:Method
Inventor
Tetsuo Kimura
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.)
Nittan Co Ltd
Original Assignee
Nittan 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 Nittan Co Ltd filed Critical Nittan Co Ltd
Priority to JP5967175A priority Critical patent/JPS51136471A/ja
Publication of JPS51136471A publication Critical patent/JPS51136471A/ja
Publication of JPS5444468B2 publication Critical patent/JPS5444468B2/ja
Granted 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
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke

Landscapes

  • Physics & Mathematics (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 The Use Of Chemical Reactions (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
JP5967175A 1975-05-21 1975-05-21 Photocell smoke sensor Granted JPS51136471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5967175A JPS51136471A (en) 1975-05-21 1975-05-21 Photocell smoke sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5967175A JPS51136471A (en) 1975-05-21 1975-05-21 Photocell smoke sensor

Publications (2)

Publication Number Publication Date
JPS51136471A true JPS51136471A (en) 1976-11-25
JPS5444468B2 JPS5444468B2 (en:Method) 1979-12-26

Family

ID=13119872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5967175A Granted JPS51136471A (en) 1975-05-21 1975-05-21 Photocell smoke sensor

Country Status (1)

Country Link
JP (1) JPS51136471A (en:Method)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0358795U (en:Method) * 1989-10-09 1991-06-07
JP2013529296A (ja) * 2010-04-21 2013-07-18 スプルー・セーフティー・プロダクツ・リミテッド 光学式煙検知器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0358795U (en:Method) * 1989-10-09 1991-06-07
JP2013529296A (ja) * 2010-04-21 2013-07-18 スプルー・セーフティー・プロダクツ・リミテッド 光学式煙検知器

Also Published As

Publication number Publication date
JPS5444468B2 (en:Method) 1979-12-26

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