FR2239168A5 - - Google Patents

Info

Publication number
FR2239168A5
FR2239168A5 FR7341044A FR7341044A FR2239168A5 FR 2239168 A5 FR2239168 A5 FR 2239168A5 FR 7341044 A FR7341044 A FR 7341044A FR 7341044 A FR7341044 A FR 7341044A FR 2239168 A5 FR2239168 A5 FR 2239168A5
Authority
FR
France
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.)
Expired
Application number
FR7341044A
Other languages
French (fr)
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.)
Electro Signal Lab Inc
Original Assignee
Electro Signal Lab Inc
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 Electro Signal Lab Inc filed Critical Electro Signal Lab Inc
Application granted granted Critical
Publication of FR2239168A5 publication Critical patent/FR2239168A5/fr
Expired legal-status Critical Current

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
    • 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

  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
FR7341044A 1973-07-25 1973-11-19 Expired FR2239168A5 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US382521A US3868184A (en) 1973-07-25 1973-07-25 Optical smoke detector with light scattering test device

Publications (1)

Publication Number Publication Date
FR2239168A5 true FR2239168A5 (ja) 1975-02-21

Family

ID=23509319

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7341044A Expired FR2239168A5 (ja) 1973-07-25 1973-11-19

Country Status (6)

Country Link
US (1) US3868184A (ja)
JP (1) JPS5711013B2 (ja)
CA (1) CA1014637A (ja)
DE (1) DE2355784C2 (ja)
FR (1) FR2239168A5 (ja)
IT (1) IT1000974B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409559A1 (fr) * 1977-11-21 1979-06-15 Cerberus Ag Detecteur de fumee
FR2415296A1 (fr) * 1978-01-24 1979-08-17 Berber Viktor Appareil photo-electrique de conversion en impulsions electriques des dimensions des particules contenues dans un courant de gaz

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50134172A (ja) * 1974-04-17 1975-10-24
US3985453A (en) * 1974-07-19 1976-10-12 Matsushita Electric Works, Ltd. Light scattering type smoke detector
US4021792A (en) * 1975-06-23 1977-05-03 Wellen Industries Smoke alarm
US4053785A (en) * 1976-01-07 1977-10-11 General Signal Corporation Optical smoke detector with smoke effect simulating means
JPS52141682A (en) * 1976-05-20 1977-11-26 Matsushita Electric Works Ltd Sensitivity tester of photoelectric sensor
JPS533881A (en) * 1976-07-01 1978-01-13 Matsushita Electric Works Ltd Sensitivity checking method for scattered light type smoke detector
US4099178A (en) * 1977-04-07 1978-07-04 Emdeko International, Inc. Test means for light responsive smoke detector
US4166698A (en) * 1977-06-10 1979-09-04 American District Telegraph Company Secondary light testing in optical smoke detectors
US4216377A (en) * 1977-06-27 1980-08-05 Nittan Company, Limited Light scattering smoke detector
JPS5427672U (ja) * 1977-07-25 1979-02-23
US4249082A (en) * 1977-09-20 1981-02-03 Cybernet Electronics Corporation Photoelectric smoke sensor box
US4144459A (en) * 1977-11-29 1979-03-13 Chloride Incorporated Smoke detector with test means for simulating a predetermined percentage of smoke
US4144458A (en) * 1977-11-29 1979-03-13 Chloride Incorporated Smoke detector with test means for simulating a predetermined concentration of smoke
US4360270A (en) * 1981-02-17 1982-11-23 Jeck Richard K Calibration and testing device for optical, single particle, size spectrometers
CH656474A5 (de) * 1981-11-11 1986-06-30 Cerberus Ag Rauchdetektor.
JPS58170550U (ja) * 1982-05-10 1983-11-14 ホーチキ株式会社 光電式煙感知器
US5523743A (en) * 1995-04-13 1996-06-04 Digital Security Controls Ltd. Self-diagnostic smoke detector
TW566634U (en) * 2002-05-13 2003-12-11 Prec Instr Developement Ct Nat Sensitivity adjustment device of photoelectric smoke detector
US8232884B2 (en) * 2009-04-24 2012-07-31 Gentex Corporation Carbon monoxide and smoke detectors having distinct alarm indications and a test button that indicates improper operation
US8836532B2 (en) 2009-07-16 2014-09-16 Gentex Corporation Notification appliance and method thereof
DE102009054141A1 (de) 2009-11-13 2011-05-19 Job Lizenz Gmbh & Co Kg Verfahren zum Prüfen der Funktion eines Rauchmelders
USD770929S1 (en) * 2014-06-26 2016-11-08 Life Safety Distribution Ag Optical block
CN106407514B (zh) * 2016-08-31 2020-06-05 合肥科斯孚安全科技有限公司 一种双光路火灾烟雾探测烟室优化设计方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920525A (en) * 1956-08-13 1960-01-12 Arthur V Appel Apparatus for automatically counting and sizing airborne particles
GB923885A (en) * 1958-10-30 1963-04-18 Courtaulds Ltd Nephelometers
DE1115477B (de) * 1959-08-12 1961-10-19 Lentia Gmbh Ortsfestes, industrielles Aerosolmessgeraet
US3234846A (en) * 1959-11-18 1966-02-15 Standard Oil Co Continuously recording turbidity meter
US3396387A (en) * 1962-07-24 1968-08-06 Kidde & Co Walter Supervised apparatus for detecting suspended matter in fluids
US3483385A (en) * 1966-05-09 1969-12-09 Bendix Corp Apparatus for comparing the surface reflectivity of materials
US3505529A (en) * 1968-02-08 1970-04-07 Bliss Co Radiation sensitive smoke detecting device
US3702734A (en) * 1971-05-03 1972-11-14 Saab Scania Ab Calibration means for instrument for reading dust accumulations on dark slides

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409559A1 (fr) * 1977-11-21 1979-06-15 Cerberus Ag Detecteur de fumee
FR2415296A1 (fr) * 1978-01-24 1979-08-17 Berber Viktor Appareil photo-electrique de conversion en impulsions electriques des dimensions des particules contenues dans un courant de gaz

Also Published As

Publication number Publication date
JPS5711013B2 (ja) 1982-03-02
DE2355784A1 (de) 1975-02-06
IT1000974B (it) 1976-04-10
US3868184A (en) 1975-02-25
DE2355784C2 (de) 1983-10-27
CA1014637A (en) 1977-07-26
JPS5034874A (ja) 1975-04-03

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Legal Events

Date Code Title Description
ST Notification of lapse