FR1441062A - Optical fire alarm - Google Patents

Optical fire alarm

Info

Publication number
FR1441062A
FR1441062A FR24111A FR24111A FR1441062A FR 1441062 A FR1441062 A FR 1441062A FR 24111 A FR24111 A FR 24111A FR 24111 A FR24111 A FR 24111A FR 1441062 A FR1441062 A FR 1441062A
Authority
FR
France
Prior art keywords
fire alarm
optical fire
optical
alarm
fire
Prior art date
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
FR24111A
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.)
Cerberus AG
Original Assignee
Cerberus AG
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
Priority claimed from CH923364A external-priority patent/CH417405A/en
Application filed by Cerberus AG filed Critical Cerberus AG
Priority to FR24111A priority Critical patent/FR1441062A/en
Application granted granted Critical
Publication of FR1441062A publication Critical patent/FR1441062A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G01N15/065—Investigating concentration of particle suspensions using condensation nuclei counters
    • 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
    • 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

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Dispersion Chemistry (AREA)
FR24111A 1964-07-14 1965-07-09 Optical fire alarm Expired FR1441062A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR24111A FR1441062A (en) 1964-07-14 1965-07-09 Optical fire alarm

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH923364A CH417405A (en) 1964-07-14 1964-07-14 Device for the detection of aerosols in air
FR24111A FR1441062A (en) 1964-07-14 1965-07-09 Optical fire alarm

Publications (1)

Publication Number Publication Date
FR1441062A true FR1441062A (en) 1966-06-03

Family

ID=25704475

Family Applications (1)

Application Number Title Priority Date Filing Date
FR24111A Expired FR1441062A (en) 1964-07-14 1965-07-09 Optical fire alarm

Country Status (1)

Country Link
FR (1) FR1441062A (en)

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