ES477921A1 - Device for measuring concentration of smoke - Google Patents

Device for measuring concentration of smoke

Info

Publication number
ES477921A1
ES477921A1 ES477921A ES477921A ES477921A1 ES 477921 A1 ES477921 A1 ES 477921A1 ES 477921 A ES477921 A ES 477921A ES 477921 A ES477921 A ES 477921A ES 477921 A1 ES477921 A1 ES 477921A1
Authority
ES
Spain
Prior art keywords
smoke
venturi
light
density
measuring concentration
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
ES477921A
Other languages
Spanish (es)
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
Publication of ES477921A1 publication Critical patent/ES477921A1/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2247—Sampling from a flowing stream of gas
    • G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The measurement of smoke density from vehicle exhaust is performed as it passes through a venturi. Density is determined by reflecting light through the smoke across the venturi throttle. A smoke head contains venturi passage for the smoke around which a light source is located to direct light across smoke to be reflected at venturi throttle. A filter and fan ensure that clean air enters a chamber containing the smoke head. An air heater is mounted on this chamber to prevent condensation occurring on the light reflector.
ES477921A 1978-02-23 1979-02-21 Device for measuring concentration of smoke Expired ES477921A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB736478 1978-02-23

Publications (1)

Publication Number Publication Date
ES477921A1 true ES477921A1 (en) 1980-03-01

Family

ID=9831717

Family Applications (1)

Application Number Title Priority Date Filing Date
ES477921A Expired ES477921A1 (en) 1978-02-23 1979-02-21 Device for measuring concentration of smoke

Country Status (6)

Country Link
JP (1) JPS54126080A (en)
BE (1) BE874379A (en)
DE (1) DE2907137C2 (en)
ES (1) ES477921A1 (en)
NL (1) NL7901445A (en)
SE (1) SE7901579L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6393546U (en) * 1986-12-10 1988-06-16
EP0370248A1 (en) * 1988-11-22 1990-05-30 Robert Bosch Gmbh Apparatus for measuring the particle level in the smoke or exhaust gas from a combustion process

Also Published As

Publication number Publication date
SE7901579L (en) 1979-08-24
NL7901445A (en) 1979-08-27
JPS54126080A (en) 1979-09-29
DE2907137C2 (en) 1986-03-06
DE2907137A1 (en) 1979-09-06
BE874379A (en) 1979-06-18

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