FR2416466A1 - LIGHT ABSORPTION MEASUREMENT METHOD OF THE QUANTITY OF A SUBSTANCE IN A MATERIAL, IN THE PRESENCE OF AN IMPURITY - Google Patents

LIGHT ABSORPTION MEASUREMENT METHOD OF THE QUANTITY OF A SUBSTANCE IN A MATERIAL, IN THE PRESENCE OF AN IMPURITY

Info

Publication number
FR2416466A1
FR2416466A1 FR7901523A FR7901523A FR2416466A1 FR 2416466 A1 FR2416466 A1 FR 2416466A1 FR 7901523 A FR7901523 A FR 7901523A FR 7901523 A FR7901523 A FR 7901523A FR 2416466 A1 FR2416466 A1 FR 2416466A1
Authority
FR
France
Prior art keywords
substance
impurity
absorption band
band
measurement method
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
FR7901523A
Other languages
French (fr)
Other versions
FR2416466B1 (en
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.)
Honeywell Measurex Corp
Original Assignee
Measurex Corp
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 Measurex Corp filed Critical Measurex Corp
Publication of FR2416466A1 publication Critical patent/FR2416466A1/en
Application granted granted Critical
Publication of FR2416466B1 publication Critical patent/FR2416466B1/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
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths

Abstract

L'invention concerne un procédé de mesure d'une quantité de substance associée à une matière en présence d'une impureté. Elle se rapporte à un procédé qui comprend la direction sur la matière de radiations comprises dans une première bande de longueurs d'onde qui se trouve en dehors d'une bande d'absorption de la substance mais dans une bande d'absorption de l'impureté, et de radiations d'une seconde bande de longueurs d'onde qui se trouve dans une bande d'absorption de la substance et dans une bande d'absorption de l'impureté. Deux signaux électriques sont formés en fonction des radiations reçues dans les deux bandes de longueurs d'onde et leur soustraction donne un signal représentatif de la quantité cherchée de la substance. Application à la détermination de la quantité d'eau présente dans une feuille de papier.A method of measuring a quantity of substance associated with a material in the presence of an impurity is provided. It relates to a method which comprises directing radiation within a first band of wavelengths which lies outside an absorption band of the substance but within an absorption band of the substance over the material. impurity, and radiation of a second band of wavelengths which is in an absorption band of the substance and in an absorption band of the impurity. Two electrical signals are formed as a function of the radiations received in the two wavelength bands and their subtraction gives a signal representative of the sought quantity of the substance. Application to the determination of the quantity of water present in a sheet of paper.

FR7901523A 1978-02-03 1979-01-22 LIGHT ABSORPTION MEASUREMENT METHOD OF THE QUANTITY OF A SUBSTANCE IN A MATERIAL, IN THE PRESENCE OF AN IMPURITY Granted FR2416466A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87477778A 1978-02-03 1978-02-03

Publications (2)

Publication Number Publication Date
FR2416466A1 true FR2416466A1 (en) 1979-08-31
FR2416466B1 FR2416466B1 (en) 1983-06-24

Family

ID=25364556

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7901523A Granted FR2416466A1 (en) 1978-02-03 1979-01-22 LIGHT ABSORPTION MEASUREMENT METHOD OF THE QUANTITY OF A SUBSTANCE IN A MATERIAL, IN THE PRESENCE OF AN IMPURITY

Country Status (5)

Country Link
JP (1) JPS54114294A (en)
CA (1) CA1102579A (en)
FR (1) FR2416466A1 (en)
GB (1) GB2013881B (en)
SE (1) SE7900926L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602160A (en) * 1983-09-28 1986-07-22 Sentrol Systems Ltd. Infrared constituent analyzer and control system
JPS6242035A (en) * 1985-08-19 1987-02-24 Yunisoku:Kk Drying degree detecting device for leaf tobacco
JPH0372346U (en) * 1989-11-20 1991-07-22
DE19520035C1 (en) * 1995-03-31 1996-11-07 Gta Sensorik Gmbh Contactless measurement of surface moisture of objects
JP2014016373A (en) * 2013-10-30 2014-01-30 Fujifilm Corp Method of measuring component amount in coating film

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614450A (en) * 1969-02-17 1971-10-19 Measurex Corp Apparatus for measuring the amount of a substance that is associated with a base material
FR2205195A5 (en) * 1972-10-27 1974-05-24 Measurex Corp
US3851175A (en) * 1972-10-27 1974-11-26 Measurex Corp Moisture gauge with opacity type compensation
FR2314493A1 (en) * 1975-06-12 1977-01-07 Measurex Corp METHOD AND APPARATUS FOR MEASURING THE QUANTITY OF A FOREIGN MATERIAL SUCH AS WATER CARRIED BY A SHEET

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614450A (en) * 1969-02-17 1971-10-19 Measurex Corp Apparatus for measuring the amount of a substance that is associated with a base material
FR2205195A5 (en) * 1972-10-27 1974-05-24 Measurex Corp
US3851175A (en) * 1972-10-27 1974-11-26 Measurex Corp Moisture gauge with opacity type compensation
FR2314493A1 (en) * 1975-06-12 1977-01-07 Measurex Corp METHOD AND APPARATUS FOR MEASURING THE QUANTITY OF A FOREIGN MATERIAL SUCH AS WATER CARRIED BY A SHEET
US4006358A (en) * 1975-06-12 1977-02-01 Measurex Corporation Method and apparatus for measuring the amount of moisture that is associated with a web of moving material

Also Published As

Publication number Publication date
GB2013881A (en) 1979-08-15
JPS54114294A (en) 1979-09-06
FR2416466B1 (en) 1983-06-24
GB2013881B (en) 1982-06-16
CA1102579A (en) 1981-06-09
SE7900926L (en) 1979-08-04

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Legal Events

Date Code Title Description
ST Notification of lapse