NO751246L - - Google Patents

Info

Publication number
NO751246L
NO751246L NO751246A NO751246A NO751246L NO 751246 L NO751246 L NO 751246L NO 751246 A NO751246 A NO 751246A NO 751246 A NO751246 A NO 751246A NO 751246 L NO751246 L NO 751246L
Authority
NO
Norway
Prior art keywords
light
setting
screw
opening
housing
Prior art date
Application number
NO751246A
Other languages
English (en)
Norwegian (no)
Inventor
S Kajii
Original Assignee
Hochiki Co
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 Hochiki Co filed Critical Hochiki Co
Publication of NO751246L publication Critical patent/NO751246L/no

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
    • G01N21/4785—Standardising light scatter apparatus; Standards therefor
    • 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

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
NO751246A 1974-04-17 1975-04-09 NO751246L (pl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49042210A JPS50134172A (pl) 1974-04-17 1974-04-17

Publications (1)

Publication Number Publication Date
NO751246L true NO751246L (pl) 1975-10-20

Family

ID=12629645

Family Applications (1)

Application Number Title Priority Date Filing Date
NO751246A NO751246L (pl) 1974-04-17 1975-04-09

Country Status (8)

Country Link
US (1) US3992102A (pl)
JP (1) JPS50134172A (pl)
CA (1) CA1028758A (pl)
DE (1) DE2515367C3 (pl)
FR (1) FR2267804B1 (pl)
GB (1) GB1501698A (pl)
NO (1) NO751246L (pl)
SE (1) SE396251B (pl)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121110A (en) * 1976-11-04 1978-10-17 Solomon Elias E Optically biased smoke detector
CH621640A5 (pl) * 1977-11-21 1981-02-13 Cerberus Ag
FR2431693A1 (fr) * 1978-07-17 1980-02-15 Grachev Konstantin Appareil de mesure des dimensions et de la quantite de particules contenues dans un milieu fluide
US4367950A (en) * 1980-12-24 1983-01-11 The United States Of America As Represented By The Secretary Of The Interior Combined aerosol monitor and calibrateable light ray scattering reference rod
CH656474A5 (de) * 1981-11-11 1986-06-30 Cerberus Ag Rauchdetektor.
DE3247063A1 (de) * 1982-12-20 1984-06-20 Svetlana Feoktistovna Mantrova Fotoelektrischer wandler der teilchengroessen in einem dispersionsmedium
JPS60148688U (ja) * 1984-03-09 1985-10-02 ホーチキ株式会社 散乱光式煙感知器
US4616928A (en) * 1984-06-20 1986-10-14 Kidde, Inc. Photoelectric smoke detector with adjustable background signal
JPS626144A (ja) * 1985-07-03 1987-01-13 Nittan Co Ltd 光電式煙感知器
GB8527277D0 (en) * 1985-11-06 1985-12-11 Formula Systems Ltd Proximity detector
DE3608393A1 (de) * 1986-03-13 1987-09-17 Preussag Ag Feuerschutz Optischer rauchmelder
US5748092A (en) * 1996-04-24 1998-05-05 Arsenault; Marc J. Ceiling tile moisture detection system
US6377183B1 (en) * 1999-06-17 2002-04-23 The Boeing Company Smoke detector having a moisture compensating device
TW566634U (en) * 2002-05-13 2003-12-11 Prec Instr Developement Ct Nat Sensitivity adjustment device of photoelectric smoke detector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240109A (en) * 1962-07-24 1966-03-15 Specialties Dev Corp Supervised apparatus for detecting suspended matter in fluids
US3710365A (en) * 1971-04-21 1973-01-09 F Barnes Electronic smoke detector
US3723747A (en) * 1971-06-03 1973-03-27 Electro Signal Lab Photoelectric detector with compensating photocell
US3868184A (en) * 1973-07-25 1975-02-25 Electro Signal Lab Optical smoke detector with light scattering test device

Also Published As

Publication number Publication date
US3992102A (en) 1976-11-16
DE2515367C3 (de) 1980-11-13
FR2267804A1 (pl) 1975-11-14
DE2515367B2 (de) 1980-03-20
AU8021775A (en) 1976-10-21
CA1028758A (en) 1978-03-28
GB1501698A (en) 1978-02-22
DE2515367A1 (de) 1975-11-06
SE396251B (sv) 1977-09-12
SE7504386L (sv) 1975-10-20
FR2267804B1 (pl) 1980-04-30
JPS50134172A (pl) 1975-10-24

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