GB2021764B - Apparatus for measuring smoke density - Google Patents

Apparatus for measuring smoke density

Info

Publication number
GB2021764B
GB2021764B GB7917746A GB7917746A GB2021764B GB 2021764 B GB2021764 B GB 2021764B GB 7917746 A GB7917746 A GB 7917746A GB 7917746 A GB7917746 A GB 7917746A GB 2021764 B GB2021764 B GB 2021764B
Authority
GB
United Kingdom
Prior art keywords
smoke density
measuring smoke
measuring
density
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
GB7917746A
Other versions
GB2021764A (en
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.)
Leslie Hartridge Ltd
Original Assignee
Leslie Hartridge 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 Leslie Hartridge Ltd filed Critical Leslie Hartridge Ltd
Priority to GB7917746A priority Critical patent/GB2021764B/en
Publication of GB2021764A publication Critical patent/GB2021764A/en
Application granted granted Critical
Publication of GB2021764B publication Critical patent/GB2021764B/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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Measuring Cells (AREA)
GB7917746A 1978-02-23 1979-05-22 Apparatus for measuring smoke density Expired GB2021764B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7917746A GB2021764B (en) 1978-02-23 1979-05-22 Apparatus for measuring smoke density

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2277679 1978-02-23
GB7917746A GB2021764B (en) 1978-02-23 1979-05-22 Apparatus for measuring smoke density

Publications (2)

Publication Number Publication Date
GB2021764A GB2021764A (en) 1979-12-05
GB2021764B true GB2021764B (en) 1982-11-10

Family

ID=26256109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7917746A Expired GB2021764B (en) 1978-02-23 1979-05-22 Apparatus for measuring smoke density

Country Status (1)

Country Link
GB (1) GB2021764B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5353629A (en) * 1991-07-05 1994-10-11 L. L. Churchill Limited Smoke meter

Also Published As

Publication number Publication date
GB2021764A (en) 1979-12-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950522