IT1000974B - Rivelatore ottico di fumo con di spositivo di prova della dispersio ne di luce - Google Patents

Rivelatore ottico di fumo con di spositivo di prova della dispersio ne di luce

Info

Publication number
IT1000974B
IT1000974B IT9693/73A IT969373A IT1000974B IT 1000974 B IT1000974 B IT 1000974B IT 9693/73 A IT9693/73 A IT 9693/73A IT 969373 A IT969373 A IT 969373A IT 1000974 B IT1000974 B IT 1000974B
Authority
IT
Italy
Prior art keywords
test device
smoke detector
light dispersion
dispersion test
optical smoke
Prior art date
Application number
IT9693/73A
Other languages
English (en)
Italian (it)
Inventor
A Marsoochi
Original Assignee
Electro Signal Lab
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 filed Critical Electro Signal Lab
Application granted granted Critical
Publication of IT1000974B publication Critical patent/IT1000974B/it

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

  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
IT9693/73A 1973-07-25 1973-11-23 Rivelatore ottico di fumo con di spositivo di prova della dispersio ne di luce IT1000974B (it)

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
IT1000974B true IT1000974B (it) 1976-04-10

Family

ID=23509319

Family Applications (1)

Application Number Title Priority Date Filing Date
IT9693/73A IT1000974B (it) 1973-07-25 1973-11-23 Rivelatore ottico di fumo con di spositivo di prova della dispersio ne di luce

Country Status (6)

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

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50134172A (enExample) * 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 (enExample) * 1977-07-25 1979-02-23
US4249082A (en) * 1977-09-20 1981-02-03 Cybernet Electronics Corporation Photoelectric smoke sensor box
CH621640A5 (enExample) * 1977-11-21 1981-02-13 Cerberus Ag
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
SU873041A1 (ru) * 1978-01-24 1981-10-15 Предприятие П/Я А-7555 Фотоэлектрический преобразователь
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
EP4592669A1 (de) * 2024-01-23 2025-07-30 Endress+Hauser SICK GmbH+Co. KG Opto-mechanisches analysegerät zur bestimmung von feinstaub in einem messgas

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

Also Published As

Publication number Publication date
DE2355784A1 (de) 1975-02-06
CA1014637A (en) 1977-07-26
DE2355784C2 (de) 1983-10-27
JPS5711013B2 (enExample) 1982-03-02
FR2239168A5 (enExample) 1975-02-21
US3868184A (en) 1975-02-25
JPS5034874A (enExample) 1975-04-03

Similar Documents

Publication Publication Date Title
IT1000974B (it) Rivelatore ottico di fumo con di spositivo di prova della dispersio ne di luce
SE409261B (sv) Ljusemitterande indikatoranordning
CH530632A (de) Photometrische Prüfeinrichtung
NL179006B (nl) Optische inrichting met een lichtgordijn.
DE6605546U (de) Optische pruefvorrichtung
CA949351A (en) Photometric analyzer employing fiber optic light transmitting means
TR18544A (tr) Hafif agirlikli kablo mahfazasi
BE820132A (fr) Appareil optique
AT323821B (de) Optische vorrichtung
BE833480A (fr) Dispositif optique
NL159789B (nl) Optische afstandmeetinrichting.
SE396265B (sv) Anordning for likstromsmatade ljusbagsugnar
IT992732B (it) Dispositivo analizzatore ottico
AR202585A1 (es) Dispositivo difusor de luz
FR2295444A1 (fr) Dispositif optique
CH490683A (de) Optisches Messgerät
BE814040A (fr) Dispositif optique
SE7714268L (sv) Ljusreflektoranordning
FR2279685A1 (fr) Verre optique
FR2301026A1 (fr) Dispositif de balayage optique
IT1017844B (it) Otturatore ottico per la verifica del funzionamento di rivelatori di fiamma
BE788793A (fr) Luminaire porteur de fibres de verre
BE759538A (fr) Elements optiques
DK146076C (da) Optisk moentproever
SE415608B (sv) Optisk mangreflekterande anordning