FR814583A - Device for optical smoke detection - Google Patents

Device for optical smoke detection

Info

Publication number
FR814583A
FR814583A FR814583DA FR814583A FR 814583 A FR814583 A FR 814583A FR 814583D A FR814583D A FR 814583DA FR 814583 A FR814583 A FR 814583A
Authority
FR
France
Prior art keywords
smoke detection
optical smoke
optical
detection
smoke
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
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.)
Phillips & Pain Ets
Original Assignee
Phillips & Pain Ets
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 Phillips & Pain Ets filed Critical Phillips & Pain Ets
Application granted granted Critical
Publication of FR814583A publication Critical patent/FR814583A/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
    • 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
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
FR814583D 1936-03-05 1936-03-05 Device for optical smoke detection Expired FR814583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR814583T 1936-03-05

Publications (1)

Publication Number Publication Date
FR814583A true FR814583A (en) 1937-06-25

Family

ID=9266821

Family Applications (1)

Application Number Title Priority Date Filing Date
FR814583D Expired FR814583A (en) 1936-03-05 1936-03-05 Device for optical smoke detection

Country Status (1)

Country Link
FR (1) FR814583A (en)

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