FR979153A - Improvements in the detection of the beginnings of fires - Google Patents

Improvements in the detection of the beginnings of fires

Info

Publication number
FR979153A
FR979153A FR979153DA FR979153A FR 979153 A FR979153 A FR 979153A FR 979153D A FR979153D A FR 979153DA FR 979153 A FR979153 A FR 979153A
Authority
FR
France
Prior art keywords
beginnings
fires
detection
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.)
Tecalemit Ltd
Original Assignee
Tecalemit 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 Tecalemit Ltd filed Critical Tecalemit Ltd
Application granted granted Critical
Publication of FR979153A publication Critical patent/FR979153A/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)
FR979153D 1948-12-01 1948-12-01 Improvements in the detection of the beginnings of fires Expired FR979153A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR979153T 1948-12-01

Publications (1)

Publication Number Publication Date
FR979153A true FR979153A (en) 1951-04-23

Family

ID=9520987

Family Applications (1)

Application Number Title Priority Date Filing Date
FR979153D Expired FR979153A (en) 1948-12-01 1948-12-01 Improvements in the detection of the beginnings of fires

Country Status (1)

Country Link
FR (1) FR979153A (en)

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