ZA71788B - Smoke detecting device - Google Patents

Smoke detecting device

Info

Publication number
ZA71788B
ZA71788B ZA710788A ZA71788A ZA71788B ZA 71788 B ZA71788 B ZA 71788B ZA 710788 A ZA710788 A ZA 710788A ZA 71788 A ZA71788 A ZA 71788A ZA 71788 B ZA71788 B ZA 71788B
Authority
ZA
South Africa
Prior art keywords
detecting device
smoke detecting
smoke
detecting
Prior art date
Application number
ZA710788A
Inventor
N Buckley
Original Assignee
Shorrock Dev Ltd
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 Shorrock Dev Ltd filed Critical Shorrock Dev Ltd
Publication of ZA71788B publication Critical patent/ZA71788B/en

Links

Classifications

    • 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
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
    • 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
    • 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
ZA710788A 1970-02-11 1971-02-09 Smoke detecting device ZA71788B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6619/70A GB1278205A (en) 1970-02-11 1970-02-11 Smoke detecting device

Publications (1)

Publication Number Publication Date
ZA71788B true ZA71788B (en) 1971-11-24

Family

ID=9817774

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA710788A ZA71788B (en) 1970-02-11 1971-02-09 Smoke detecting device

Country Status (3)

Country Link
DE (1) DE2105917A1 (en)
GB (1) GB1278205A (en)
ZA (1) ZA71788B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1405615A (en) * 1972-08-11 1975-09-10 Chubb Fire Security Ltd Fire alarms
IL45331A (en) * 1973-11-26 1977-12-30 Chloride Batterijen Bv Photoelectric smoke detector
CA1052887A (en) * 1974-11-27 1979-04-17 Pyrotector Smoke detector
JPS5631625A (en) * 1979-08-24 1981-03-31 Hochiki Corp Smoke detector of photoelectronic type
AU577551B2 (en) * 1983-10-21 1988-09-29 Vision Systems Limited Improvements relating to smoke detection apparatus
EP0145189B1 (en) * 1983-10-21 1990-08-08 COLE, Martin Terence Improvements relating to smoke detection apparatus
DE102008010446A1 (en) * 2008-02-21 2009-09-10 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Method and optical sensor arrangement for detecting a measured variable of a medium, in particular for turbidity measurement

Also Published As

Publication number Publication date
GB1278205A (en) 1972-06-21
DE2105917A1 (en) 1971-08-26

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