GB479662A - Improvements in or relating to devices for measuring and/or indicating the diffusion of light in, or the turbidity of fluids and other transparent media - Google Patents

Improvements in or relating to devices for measuring and/or indicating the diffusion of light in, or the turbidity of fluids and other transparent media

Info

Publication number
GB479662A
GB479662A GB19316/37A GB1931637A GB479662A GB 479662 A GB479662 A GB 479662A GB 19316/37 A GB19316/37 A GB 19316/37A GB 1931637 A GB1931637 A GB 1931637A GB 479662 A GB479662 A GB 479662A
Authority
GB
United Kingdom
Prior art keywords
light
cell
medium
turbidity
diffusion
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
GB19316/37A
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.)
GAS ACCUMULATOR Co UNITED
Original Assignee
GAS ACCUMULATOR Co UNITED
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 GAS ACCUMULATOR Co UNITED filed Critical GAS ACCUMULATOR Co UNITED
Publication of GB479662A publication Critical patent/GB479662A/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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
    • 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
    • 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)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Measuring Cells (AREA)

Abstract

479,662. Photometric apparatus. GAS ACCUMULATOR CO. (UNITED KINGDOM), Ltd. July 12, 1937, No. 19316. Convention date, July 11, 1936. [Class 40 (iii)] For measuring and/or indicating the diffusion of light in or the turbidity of a transparent medium, light is passed through the medium to be examined and two light - sensitive cells are arranged in the path of the rays in such a manner that an increase in the light diffusion by the medium will produce a proportional increase in the illumination of one of the cells and a corresponding decrease in the illumination of the other cell. The apparatus shown comprises a container for the medium M to be examined, and lenses 2, 5 for focusing light from a source 1, after passing through the container, on to an aperture in a photo-voltaic cell 6. After passing through the aperture, the light falls on a second cell 8 which is connected in series opposition to the cell 6 and to a measuring instrument 10. If the medium M is perfectly clear, only the cell 8 is activated, but if the light is dispersed by the medium, some of the rays fall on the cell 6 and a corresponding decrease in illumination of the cell 8 occurs. The consequent effect on the instrument 10 is a measure of the turbidity of the medium. In a modification, the cells are arranged in one and the same plane, the sensitive layer of one surrounding or being adjacent to that of the other.
GB19316/37A 1936-07-11 1937-07-12 Improvements in or relating to devices for measuring and/or indicating the diffusion of light in, or the turbidity of fluids and other transparent media Expired GB479662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE823695X 1936-07-11

Publications (1)

Publication Number Publication Date
GB479662A true GB479662A (en) 1938-02-09

Family

ID=20310438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19316/37A Expired GB479662A (en) 1936-07-11 1937-07-12 Improvements in or relating to devices for measuring and/or indicating the diffusion of light in, or the turbidity of fluids and other transparent media

Country Status (2)

Country Link
FR (1) FR823695A (en)
GB (1) GB479662A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769365A (en) * 1949-08-22 1956-11-06 Loeschcke Hans Counting device for microscopic particles
DE961033C (en) * 1952-03-25 1957-03-28 Atlas Werke Ag Photometric measuring device for the examination of oxygen in the blood in human tissues
US2816479A (en) * 1954-07-06 1957-12-17 Du Pont Particle measurement
US2964640A (en) * 1957-05-31 1960-12-13 Saint Gobain Turbidimeter
US3218909A (en) * 1961-12-22 1965-11-23 Janice B Fain Optical ranging device using movable concentric coplanar detectors
US3713743A (en) * 1970-11-25 1973-01-30 Agricultural Control Syst Forward scatter optical turbidimeter apparatus
US4320978A (en) * 1978-12-12 1982-03-23 Ko Sato Integration sphere type turbidimeter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE926993C (en) * 1949-11-22 1955-04-28 Hoechst Ag Device for determining or measuring light scattering

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769365A (en) * 1949-08-22 1956-11-06 Loeschcke Hans Counting device for microscopic particles
DE961033C (en) * 1952-03-25 1957-03-28 Atlas Werke Ag Photometric measuring device for the examination of oxygen in the blood in human tissues
US2816479A (en) * 1954-07-06 1957-12-17 Du Pont Particle measurement
US2964640A (en) * 1957-05-31 1960-12-13 Saint Gobain Turbidimeter
US3218909A (en) * 1961-12-22 1965-11-23 Janice B Fain Optical ranging device using movable concentric coplanar detectors
US3713743A (en) * 1970-11-25 1973-01-30 Agricultural Control Syst Forward scatter optical turbidimeter apparatus
US4320978A (en) * 1978-12-12 1982-03-23 Ko Sato Integration sphere type turbidimeter

Also Published As

Publication number Publication date
FR823695A (en) 1938-01-25

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