AT288208B - Monitoring device for displaying the failure of the light source for optical smoke alarms - Google Patents

Monitoring device for displaying the failure of the light source for optical smoke alarms

Info

Publication number
AT288208B
AT288208B AT382668A AT382668A AT288208B AT 288208 B AT288208 B AT 288208B AT 382668 A AT382668 A AT 382668A AT 382668 A AT382668 A AT 382668A AT 288208 B AT288208 B AT 288208B
Authority
AT
Austria
Prior art keywords
displaying
failure
light source
monitoring device
smoke alarms
Prior art date
Application number
AT382668A
Other languages
German (de)
Original Assignee
Pyrotector 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 Pyrotector Inc filed Critical Pyrotector Inc
Application granted granted Critical
Publication of AT288208B publication Critical patent/AT288208B/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
AT382668A 1967-04-21 1968-04-19 Monitoring device for displaying the failure of the light source for optical smoke alarms AT288208B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63272867A 1967-04-21 1967-04-21

Publications (1)

Publication Number Publication Date
AT288208B true AT288208B (en) 1971-02-25

Family

ID=24536696

Family Applications (1)

Application Number Title Priority Date Filing Date
AT382668A AT288208B (en) 1967-04-21 1968-04-19 Monitoring device for displaying the failure of the light source for optical smoke alarms

Country Status (4)

Country Link
AT (1) AT288208B (en)
CH (1) CH464743A (en)
FR (1) FR1569928A (en)
GB (1) GB1179531A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140502A1 (en) * 1983-08-12 1985-05-08 Martin Terence Cole Improvements relating to smoke detection apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140502A1 (en) * 1983-08-12 1985-05-08 Martin Terence Cole Improvements relating to smoke detection apparatus

Also Published As

Publication number Publication date
GB1179531A (en) 1970-01-28
FR1569928A (en) 1969-06-06
CH464743A (en) 1968-10-31

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee