BE862626A - OPTICAL SMOKE DETECTOR - Google Patents

OPTICAL SMOKE DETECTOR

Info

Publication number
BE862626A
BE862626A BE184092A BE184092A BE862626A BE 862626 A BE862626 A BE 862626A BE 184092 A BE184092 A BE 184092A BE 184092 A BE184092 A BE 184092A BE 862626 A BE862626 A BE 862626A
Authority
BE
Belgium
Prior art keywords
smoke detector
optical smoke
optical
detector
smoke
Prior art date
Application number
BE184092A
Other languages
French (fr)
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of BE862626A publication Critical patent/BE862626A/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details
BE184092A 1977-01-07 1978-01-04 OPTICAL SMOKE DETECTOR BE862626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75760577A 1977-01-07 1977-01-07

Publications (1)

Publication Number Publication Date
BE862626A true BE862626A (en) 1978-05-02

Family

ID=25048493

Family Applications (1)

Application Number Title Priority Date Filing Date
BE184092A BE862626A (en) 1977-01-07 1978-01-04 OPTICAL SMOKE DETECTOR

Country Status (6)

Country Link
JP (1) JPS53106081A (en)
AU (1) AU3100277A (en)
BE (1) BE862626A (en)
DE (1) DE2758517A1 (en)
FR (1) FR2377033A1 (en)
NL (1) NL7800184A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153550A (en) * 1984-08-23 1986-03-17 Nohmi Bosai Kogyo Co Ltd Photoelectric smoke sensor
EP0175940B1 (en) * 1984-08-23 1990-12-05 Nohmi Bosai Kogyo Co., Ltd. Photoelectric smoke detector
JP2536901B2 (en) * 1988-06-27 1996-09-25 日本テクトロン株式会社 Fluorescence measurement device
DE19882465B4 (en) * 1997-05-29 2009-09-24 Hochiki Corp. Light projector device for a photoelectric smoke sensor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364030A (en) * 1964-04-29 1968-01-16 Du Pont Leuco dye-diacylazino light-sensitive dye former compositions

Also Published As

Publication number Publication date
AU3100277A (en) 1979-06-07
FR2377033A1 (en) 1978-08-04
NL7800184A (en) 1978-07-11
DE2758517A1 (en) 1978-07-13
JPS53106081A (en) 1978-09-14

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