FR2470962A1 - Optical measurement device for liq. sample concentration - has photocells mounted on mobile support and surrounding sample, in path of light source and opaque screen - Google Patents

Optical measurement device for liq. sample concentration - has photocells mounted on mobile support and surrounding sample, in path of light source and opaque screen

Info

Publication number
FR2470962A1
FR2470962A1 FR7929503A FR7929503A FR2470962A1 FR 2470962 A1 FR2470962 A1 FR 2470962A1 FR 7929503 A FR7929503 A FR 7929503A FR 7929503 A FR7929503 A FR 7929503A FR 2470962 A1 FR2470962 A1 FR 2470962A1
Authority
FR
France
Prior art keywords
sample
light
cells
liq
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.)
Granted
Application number
FR7929503A
Other languages
French (fr)
Other versions
FR2470962B1 (en
Inventor
Sylvain Tuil
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.)
Horiba Jobin Yvon SAS
Original Assignee
Horiba Jobin Yvon SAS
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 Horiba Jobin Yvon SAS filed Critical Horiba Jobin Yvon SAS
Priority to FR7929503A priority Critical patent/FR2470962A1/en
Publication of FR2470962A1 publication Critical patent/FR2470962A1/en
Application granted granted Critical
Publication of FR2470962B1 publication Critical patent/FR2470962B1/fr
Granted 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
    • G01N21/251—Colorimeters; Construction thereof
    • G01N21/253—Colorimeters; Construction thereof for batch operation, i.e. multisample apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/04—Batch operation; multisample devices
    • G01N2201/0415—Carrusel, sequential

Abstract

The light beam is measured before and after passing through the sample to provide a reference value. A circular platform is rotated by gears driven from a step motor output shaft. The platform carries a number of measuring cells with circular upper sections and rectangular lower sections. Light from a luminous source passes through the cells as they pass. The light is received by a photocell via an opaque annular screen behind the cells. Openings aligned with the cells allow the light to pass through and allow the photocell to measure the light intensity before and after as well as when the cell passes to provide a reference value of light intensity.
FR7929503A 1979-11-30 1979-11-30 Optical measurement device for liq. sample concentration - has photocells mounted on mobile support and surrounding sample, in path of light source and opaque screen Granted FR2470962A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7929503A FR2470962A1 (en) 1979-11-30 1979-11-30 Optical measurement device for liq. sample concentration - has photocells mounted on mobile support and surrounding sample, in path of light source and opaque screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7929503A FR2470962A1 (en) 1979-11-30 1979-11-30 Optical measurement device for liq. sample concentration - has photocells mounted on mobile support and surrounding sample, in path of light source and opaque screen

Publications (2)

Publication Number Publication Date
FR2470962A1 true FR2470962A1 (en) 1981-06-12
FR2470962B1 FR2470962B1 (en) 1983-01-07

Family

ID=9232260

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7929503A Granted FR2470962A1 (en) 1979-11-30 1979-11-30 Optical measurement device for liq. sample concentration - has photocells mounted on mobile support and surrounding sample, in path of light source and opaque screen

Country Status (1)

Country Link
FR (1) FR2470962A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0303707A1 (en) * 1987-02-20 1989-02-22 Nittec Co., Ltd. Optical measurement method and apparatus therefor in automatic analyzer
EP3488247A4 (en) * 2016-07-21 2019-08-07 Siemens Healthcare Diagnostics Inc. Eliminating source lamp intensity drift effect using reference measurement between cuvettes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039354A (en) * 1958-10-31 1962-06-19 Crown Cork & Seal Co Synchronized window for automatic inspection apparatus
GB1192008A (en) * 1966-09-14 1970-05-13 Atomic Energy Authority Uk Improvements in or relating to Colorimeters
US3544225A (en) * 1967-12-13 1970-12-01 Berkeley Scient Lab Inc Peak reading optical density measuring system
US3554654A (en) * 1967-10-18 1971-01-12 Bodenseewerk Perkin Elmer Co Single-beam photometer
US3609047A (en) * 1970-03-02 1971-09-28 Xerox Corp Single beam photometer system wherein the absorbance of a sample is determined relative to a reference

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039354A (en) * 1958-10-31 1962-06-19 Crown Cork & Seal Co Synchronized window for automatic inspection apparatus
GB1192008A (en) * 1966-09-14 1970-05-13 Atomic Energy Authority Uk Improvements in or relating to Colorimeters
US3554654A (en) * 1967-10-18 1971-01-12 Bodenseewerk Perkin Elmer Co Single-beam photometer
US3544225A (en) * 1967-12-13 1970-12-01 Berkeley Scient Lab Inc Peak reading optical density measuring system
US3609047A (en) * 1970-03-02 1971-09-28 Xerox Corp Single beam photometer system wherein the absorbance of a sample is determined relative to a reference

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0303707A1 (en) * 1987-02-20 1989-02-22 Nittec Co., Ltd. Optical measurement method and apparatus therefor in automatic analyzer
EP0303707A4 (en) * 1987-02-20 1990-05-14 Nittec Co Ltd Optical measurement method and apparatus therefor in automatic analyzer.
EP3488247A4 (en) * 2016-07-21 2019-08-07 Siemens Healthcare Diagnostics Inc. Eliminating source lamp intensity drift effect using reference measurement between cuvettes
EP3882636A1 (en) * 2016-07-21 2021-09-22 Siemens Healthcare Diagnostics Inc. Eliminating source lamp intensity drift effect using reference measurement between cuvettes
US11226346B2 (en) 2016-07-21 2022-01-18 Siemens Healthcare Diagnostics Inc. Eliminating source lamp intensity drift effect using reference measurement between cuvettes

Also Published As

Publication number Publication date
FR2470962B1 (en) 1983-01-07

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