GB668433A - Improvements in apparatus for dust measurement - Google Patents

Improvements in apparatus for dust measurement

Info

Publication number
GB668433A
GB668433A GB27645/49A GB2764549A GB668433A GB 668433 A GB668433 A GB 668433A GB 27645/49 A GB27645/49 A GB 27645/49A GB 2764549 A GB2764549 A GB 2764549A GB 668433 A GB668433 A GB 668433A
Authority
GB
United Kingdom
Prior art keywords
optical system
light
oct
dust
path
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
GB27645/49A
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.)
ALPENLAENDISCHER ZENTRALVER ZU
Original Assignee
ALPENLAENDISCHER ZENTRALVER ZU
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 ALPENLAENDISCHER ZENTRALVER ZU filed Critical ALPENLAENDISCHER ZENTRALVER ZU
Publication of GB668433A publication Critical patent/GB668433A/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

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)

Abstract

668,433. Measuring dust-content photoelectrically. ALPENLANDISCHER ZENTRALVEREIN ZUR FORDERUNG SCHOPFERISCHEN SCHAFFENS. Oct. 28, 1949 [Oct. 28, 1948], No. 27645/49. Class 40 (iii). Apparatus for measuring the amount of dust in an atmosphere comprises means for sending a parallel-sided beam of light through the dustladen atmosphere, and an optical system for collecting dispersed light in a plane normal to the path of the beam, and conducting it to a photoelectric cell actuating an electric indicator through an amplifier. As shown, the light from a source 1 is confined to a parallel-sided beam 5 by an optical system 3 and screens 4, being continuously interrupted by a rotating, perforated disc 9. Dispersed light is collected by an optical system 16 and directed to a photoelectric cell 6 feeding an indicator 8 via a tuned amplifier 7, the optical system 16 and the photocell 6 being rotatable in a plane normal to the path of the beam, through an angle 10. A concave mirror 2 may be placed behind the light source 1, and a plane mirror 17 facing it. A further optical system 19 allows for visual observation for coarse particles. The pulsations of the light beam may be produced by other methods, and the beam may be made to pass through colour or polarizing filters.
GB27645/49A 1948-10-28 1949-10-28 Improvements in apparatus for dust measurement Expired GB668433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT668433X 1948-10-28

Publications (1)

Publication Number Publication Date
GB668433A true GB668433A (en) 1952-03-19

Family

ID=3678589

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27645/49A Expired GB668433A (en) 1948-10-28 1949-10-28 Improvements in apparatus for dust measurement

Country Status (2)

Country Link
DE (1) DE850245C (en)
GB (1) GB668433A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2816479A (en) * 1954-07-06 1957-12-17 Du Pont Particle measurement
US2866378A (en) * 1957-01-14 1958-12-30 Howard D Warshaw Fuel turbidimeter
DE1162596B (en) * 1955-09-23 1964-02-06 Nat Res Dev Method for measuring visibility in the open atmosphere and device for carrying out the method
US3231748A (en) * 1961-10-30 1966-01-25 Fyr Fyter Co Smoke detector
US3420609A (en) * 1964-08-27 1969-01-07 Shimadzu Corp Photometer for comparing scattered with transmitted light
US3453049A (en) * 1965-10-21 1969-07-01 Robert H Wager Co Inc Lens cleaning system

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013894B (en) * 1953-08-28 1957-08-14 Gustaf Rikard Hassel Dipl Ing Device for measuring the illuminance of motor vehicle headlights
DE1008500B (en) * 1954-08-23 1957-05-16 Zeiss Jena Veb Carl Device for measuring Truebungen
DE1102442B (en) * 1955-06-14 1961-03-16 Berthold Schumacher Dipl Phys Process and apparatus for the measurement of local gas densities within an extensive observation area
DE1052707B (en) * 1955-11-29 1959-03-12 Licentia Gmbh Method for determining the transparency of the cloudy atmosphere
DE1147404B (en) * 1956-02-18 1963-04-18 Bayer Ag Automatically working photometer according to the single-beam principle for the investigation of molecularly non-uniform, especially macromolecular substances by means of the turbidity titration method
DE1198585B (en) * 1959-09-22 1965-08-12 Huels Chemische Werke Ag Truebungsmesser
DE3418283A1 (en) * 1984-05-17 1985-12-12 Schott Glaswerke, 6500 Mainz METHOD FOR DETECTING DEFECTS IN TRANSPARENT MATERIALS
DE102010008678A1 (en) * 2010-02-19 2011-08-25 Wunderle, Julian, 41516 Equipment for determining particle in suspensions and solutions, has solar cell connected with voltmeter, and diaphragm and paper diaphragm possessing circular hole in middle part, and sensor formed as solar cell

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2816479A (en) * 1954-07-06 1957-12-17 Du Pont Particle measurement
DE1162596B (en) * 1955-09-23 1964-02-06 Nat Res Dev Method for measuring visibility in the open atmosphere and device for carrying out the method
US2866378A (en) * 1957-01-14 1958-12-30 Howard D Warshaw Fuel turbidimeter
US3231748A (en) * 1961-10-30 1966-01-25 Fyr Fyter Co Smoke detector
US3420609A (en) * 1964-08-27 1969-01-07 Shimadzu Corp Photometer for comparing scattered with transmitted light
US3453049A (en) * 1965-10-21 1969-07-01 Robert H Wager Co Inc Lens cleaning system

Also Published As

Publication number Publication date
DE850245C (en) 1952-09-22

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