NL7800184A - OPTICAL SMOKE DETECTOR. - Google Patents

OPTICAL SMOKE DETECTOR.

Info

Publication number
NL7800184A
NL7800184A NL7800184A NL7800184A NL7800184A NL 7800184 A NL7800184 A NL 7800184A NL 7800184 A NL7800184 A NL 7800184A NL 7800184 A NL7800184 A NL 7800184A NL 7800184 A NL7800184 A NL 7800184A
Authority
NL
Netherlands
Prior art keywords
smoke detector
optical smoke
optical
detector
smoke
Prior art date
Application number
NL7800184A
Other languages
Dutch (nl)
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 NL7800184A publication Critical patent/NL7800184A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
NL7800184A 1977-01-07 1978-01-06 OPTICAL SMOKE DETECTOR. NL7800184A (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
NL7800184A true NL7800184A (en) 1978-07-11

Family

ID=25048493

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7800184A NL7800184A (en) 1977-01-07 1978-01-06 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
KR100470235B1 (en) 1997-05-29 2005-02-07 호치키 가부시키가이샤 Light projection 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
BE862626A (en) 1978-05-02
AU3100277A (en) 1979-06-07
DE2758517A1 (en) 1978-07-13
JPS53106081A (en) 1978-09-14
FR2377033A1 (en) 1978-08-04

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Legal Events

Date Code Title Description
BV The patent application has lapsed