ES477921A1 - Device for measuring concentration of smoke - Google Patents
Device for measuring concentration of smokeInfo
- 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
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.
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)
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 |
-
1979
- 1979-02-21 ES ES477921A patent/ES477921A1/en not_active Expired
- 1979-02-22 BE BE193643A patent/BE874379A/en unknown
- 1979-02-22 JP JP2017479A patent/JPS54126080A/en active Pending
- 1979-02-22 DE DE19792907137 patent/DE2907137C2/en not_active Expired
- 1979-02-22 SE SE7901579A patent/SE7901579L/en not_active Application Discontinuation
- 1979-02-23 NL NL7901445A patent/NL7901445A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
SE7901579L (en) | 1979-08-24 |
BE874379A (en) | 1979-06-18 |
DE2907137A1 (en) | 1979-09-06 |
NL7901445A (en) | 1979-08-27 |
DE2907137C2 (en) | 1986-03-06 |
JPS54126080A (en) | 1979-09-29 |
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