JPS55138640A - Smoke density measuring apparatus - Google Patents

Smoke density measuring apparatus

Info

Publication number
JPS55138640A
JPS55138640A JP4639379A JP4639379A JPS55138640A JP S55138640 A JPS55138640 A JP S55138640A JP 4639379 A JP4639379 A JP 4639379A JP 4639379 A JP4639379 A JP 4639379A JP S55138640 A JPS55138640 A JP S55138640A
Authority
JP
Japan
Prior art keywords
prism
smoke density
density measuring
lens group
measuring section
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.)
Pending
Application number
JP4639379A
Other languages
Japanese (ja)
Inventor
Shigeto Harano
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP4639379A priority Critical patent/JPS55138640A/en
Publication of JPS55138640A publication Critical patent/JPS55138640A/en
Pending 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)

Abstract

PURPOSE:To improve measurement accuracy by using lenses and prisms. CONSTITUTION:A lamp 1, condenser lens 5, the 2nd prism 9, lens group 6, glass plate 8 which delineates the smoke density measuring section A, the 1st prism 7, and the 1st, the 2nd photo detectors 11, 12 are arrayed in a cylindrical barrel 10. As a result of this, part of the light from the lamp 1 is reflected by the 2nd prism 9 and is received in the 1st photo detector 11. The rest is parallelized by the lens group 6 and passes through the smoke density measuring section A. This light is reflected by the 1st prism 7 and again passes through the smoke density measuring section A and is received in the 2nd photo detector 12 via the lens group 6 and the 2nd prism 9. Since the 1st and the 2nd photo detectors 11, 12 are thermally coupled and have the same characteristic, the smoke density which is compensated with respect to temperature characteristics is measured from the ratio of both the photo detecting outputs.
JP4639379A 1979-04-15 1979-04-15 Smoke density measuring apparatus Pending JPS55138640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4639379A JPS55138640A (en) 1979-04-15 1979-04-15 Smoke density measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4639379A JPS55138640A (en) 1979-04-15 1979-04-15 Smoke density measuring apparatus

Publications (1)

Publication Number Publication Date
JPS55138640A true JPS55138640A (en) 1980-10-29

Family

ID=12745894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4639379A Pending JPS55138640A (en) 1979-04-15 1979-04-15 Smoke density measuring apparatus

Country Status (1)

Country Link
JP (1) JPS55138640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020030112A (en) * 2018-08-23 2020-02-27 富士電機株式会社 Laser analyzer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020030112A (en) * 2018-08-23 2020-02-27 富士電機株式会社 Laser analyzer

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