FR2452099A1 - PROCESS FOR MEASURING THE CONTENT OF A SUBSTANCE IN A THIN FILM CONSISTING OF A MIXTURE OF MULTIPLE PRODUCTS AND PARTICULARLY FOR MEASURING THE WATER CONTENT OF PAPER - Google Patents

PROCESS FOR MEASURING THE CONTENT OF A SUBSTANCE IN A THIN FILM CONSISTING OF A MIXTURE OF MULTIPLE PRODUCTS AND PARTICULARLY FOR MEASURING THE WATER CONTENT OF PAPER

Info

Publication number
FR2452099A1
FR2452099A1 FR8006036A FR8006036A FR2452099A1 FR 2452099 A1 FR2452099 A1 FR 2452099A1 FR 8006036 A FR8006036 A FR 8006036A FR 8006036 A FR8006036 A FR 8006036A FR 2452099 A1 FR2452099 A1 FR 2452099A1
Authority
FR
France
Prior art keywords
paper
measuring
content
water
substance
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
FR8006036A
Other languages
French (fr)
Other versions
FR2452099B1 (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.)
LIPPKE GmbH CO KG PAUL
Original Assignee
LIPPKE GmbH CO KG PAUL
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 LIPPKE GmbH CO KG PAUL filed Critical LIPPKE GmbH CO KG PAUL
Publication of FR2452099A1 publication Critical patent/FR2452099A1/en
Application granted granted Critical
Publication of FR2452099B1 publication Critical patent/FR2452099B1/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 PERMET D'OBTENIR DES RESULTATS EXACTS EN UTILISANT LE PROCEDE D'ABSORPTION SELECTIF DES RADIATIONS INFRA-ROUGES PAR L'EAU ET PAR LE PAPIER, MEME LORSQUE LES PROPRIETES CHIMIQUES OU STRUCTURELLES DE LA CELLULOSE DU PAPIER OU DES ADDITIONS QUI LUI SONT INCORPOREES OU LES VARIATIONS DE CES PROPRIETES FAUSSERAIENT LES RESULTATS DANS LE CAS DE LA COMPARAISON CLASSIQUE DE DEUX LONGUEURS D'ONDE DONT L'UNE EST ABSORBEE PAR L'EAU ET L'AUTRE N'EST ABSORBEE NI PAR L'EAU, NI PAR LE RESTE DU PAPIER. IL EST PREVU PAR L'INVENTION D'UTILISER UNE TROISIEME LONGUEUR D'ONDE ABSORBEE PAR LA CELLULOSE POUR PRODUIRE UN SIGNAL SERVANT, AVEC LES SIGNAUX CORRESPONDANT AUX PREMIERES LONGUEURS D'ONDE ET AVEC LA CONNAISSANCE DE LA DENSITE DU PAPIER PAR UNITE DE SURFACE, A CALCULER LA TENEUR EN EAU DU PAPIER. L'INVENTION EST APPLICABLE A DIVERS PRODUITS SYNTHETIQUES POUR DETERMINER LEUR TENEUR EN UNE SUBSTANCE DETERMINEE.THE INVENTION ALLOWS ACCURATE RESULTS TO BE OBTAINED BY USING THE PROCESS FOR THE SELECTIVE ABSORPTION OF INFRA-RED RADIATIONS BY WATER AND BY PAPER, EVEN WHEN THE CHEMICAL OR STRUCTURAL PROPERTIES OF PAPER CELLULOSE OR ADDITIONS THAT ARE THEREFORE. INCORPORATED OR VARIATIONS OF THESE PROPERTIES WOULD FALSE THE RESULTS IN THE CASE OF A CLASSIC COMPARISON OF TWO WAVELENGTHS, ONE OF WHICH IS ABSORBED BY WATER AND THE OTHER IS ABSORBED BY NEITHER WATER, NOR BY THE REST OF PAPER. IT IS PROVIDED BY THE INVENTION TO USE A THIRD WAVELENGTH ABSORBED BY CELLULOSE TO PRODUCE A SERVING SIGNAL, WITH THE SIGNALS CORRESPONDING TO THE FIRST WAVELENGTHS AND WITH THE KNOWLEDGE OF THE DENSITY OF THE PAPER PER UNIT OF SURFACE, TO CALCULATE THE WATER CONTENT OF THE PAPER. THE INVENTION IS APPLICABLE TO VARIOUS SYNTHETIC PRODUCTS FOR DETERMINING THEIR CONTENT IN A SPECIFIC SUBSTANCE.

FR8006036A 1979-03-19 1980-03-18 PROCESS FOR MEASURING THE CONTENT OF A SUBSTANCE IN A THIN FILM CONSISTING OF A MIXTURE OF MULTIPLE PRODUCTS AND PARTICULARLY FOR MEASURING THE WATER CONTENT OF PAPER Granted FR2452099A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2910673A DE2910673C2 (en) 1979-03-19 1979-03-19 Method for contactless measurement of the absolute content of a substance (secondary substance) in a mixture (main substance and secondary substance) of several substances in the form of a thin film, in particular for measuring the absolute content of water in paper

Publications (2)

Publication Number Publication Date
FR2452099A1 true FR2452099A1 (en) 1980-10-17
FR2452099B1 FR2452099B1 (en) 1983-07-08

Family

ID=6065761

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8006036A Granted FR2452099A1 (en) 1979-03-19 1980-03-18 PROCESS FOR MEASURING THE CONTENT OF A SUBSTANCE IN A THIN FILM CONSISTING OF A MIXTURE OF MULTIPLE PRODUCTS AND PARTICULARLY FOR MEASURING THE WATER CONTENT OF PAPER

Country Status (7)

Country Link
BR (1) BR7903020A (en)
DE (1) DE2910673C2 (en)
DK (1) DK114080A (en)
FR (1) FR2452099A1 (en)
GB (1) GB2044443B (en)
NO (1) NO156105C (en)
SE (1) SE441217B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60620B2 (en) * 1979-05-21 1985-01-09 横河電機株式会社 Method and device for measuring moisture content of paper
FI824185L (en) * 1981-12-07 1983-06-08 Valmet Oy OPTICAL REQUIREMENTS FOR OPTICAL ORGANIZATION FOR MAINTENANCE AV CONSISTENCY AV MASSASUSPENSION
GB8325691D0 (en) * 1983-09-26 1983-10-26 Wiggins Teape Group Ltd Measuring water content
US5778041A (en) * 1983-10-13 1998-07-07 Honeywell-Measurex Corporation System and process for measuring ash in paper
US4577104A (en) * 1984-01-20 1986-03-18 Accuray Corporation Measuring the percentage or fractional moisture content of paper having a variable infrared radiation scattering characteristic and containing a variable amount of a broadband infrared radiation absorber
US4769544A (en) * 1984-06-01 1988-09-06 Measurex Corporation System and process for measuring fiberglass
WO1987002772A1 (en) * 1985-10-22 1987-05-07 Deutsche Forschungs- Und Versuchsanstalt Für Luft- Process and device for measuring concentration
DE3643764A1 (en) * 1986-12-20 1988-06-30 Lippke Gmbh Co Kg Paul METHOD FOR SELECTIVE FILLER MEASUREMENT ON RUNNING MATERIAL SHEETS, IN PARTICULAR PAPER SHEETS
US4928013A (en) * 1987-02-17 1990-05-22 Measurex Corporation Temperature insensitive moisture sensor
US4805623A (en) * 1987-09-04 1989-02-21 Vander Corporation Spectrophotometric method for quantitatively determining the concentration of a dilute component in a light- or other radiation-scattering environment
JPH0648244B2 (en) * 1988-10-25 1994-06-22 横河電機株式会社 Infrared moisture meter that reduces the effect of basis weight
US5014288A (en) * 1989-04-20 1991-05-07 Measurex Corporation X-ray coating weight controller and sensor
CA2038704C (en) * 1990-04-26 1996-01-30 Ryuji Chiba Infrared ray moisture meter
EP0483607B1 (en) * 1990-11-02 1997-04-23 Maschinenfabrik Rieter Ag Method for identifying the quality of a fiber material
US5124552A (en) * 1991-01-28 1992-06-23 Measurex Corporation Sensor and method for measuring web moisture with optimal temperature insensitivity over a wide basis weight range
GB9107815D0 (en) * 1991-04-12 1991-05-29 Servomex Uk Ltd Apparatus and method for improving the performance of a single beam photometer
US5338361A (en) * 1991-11-04 1994-08-16 Measurex Corporation Multiple coat measurement and control apparatus and method
US5276327A (en) * 1991-12-09 1994-01-04 Measurex Corporation Sensor and method for mesaurement of select components of a material
US5399859A (en) * 1993-05-24 1995-03-21 Courtaulds Fibres (Holdings) Limited Flow meter
ATE204989T1 (en) * 1993-06-02 2001-09-15 Isola Laminate Systems Corp METHOD FOR MEASURING THE DEGREE OF CURING AND THE RESIN CONTENT OF A GLASS FIBER REINFORCED EPOXY RESIN PREPREGT
US5457319A (en) * 1993-06-02 1995-10-10 Alliedsignal Inc. Process for measurement of the degree of cure and percent resin of glass-fiber reinforced epoxy resin prepreg
US6229612B1 (en) * 1998-10-12 2001-05-08 The Regents Of The University Of California Paper area density measurement from forward transmitted scattered light
FI115856B (en) * 2000-02-10 2005-07-29 Metso Automation Oy Method and apparatus for measuring coating
GB2365964B (en) * 2000-03-24 2002-07-10 Innogy Ltd Membrane moisture measurement
US7088456B2 (en) * 2004-04-24 2006-08-08 Honeywell International Inc. Thin film thickness measurement using multichannel infrared sensor
FI125721B (en) * 2012-05-25 2016-01-29 Valmet Automation Oy Apparatus and method for measuring an object comprising cellulosic material and at least one dye including printing ink
FI125514B (en) * 2012-05-25 2015-11-13 Valmet Automation Oy Apparatus and method for measuring a web containing cellulose and optionally lignin
CN104390880A (en) * 2014-11-02 2015-03-04 中南林业科技大学 Method for rapidly detecting moisture content of wood

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405268A (en) * 1965-03-12 1968-10-08 Brun Sensor Systems Inc Radiant energy absorption gage for measuring the weight of a base material and the content of a material sorbed by the base material
US3551678A (en) * 1967-02-13 1970-12-29 Sybron Corp Paper parameter measurement using infrared radiation
US3790796A (en) * 1972-06-05 1974-02-05 Infra Systems Inc Method and apparatus for measurement of sheet opacity
DE2724919A1 (en) * 1977-06-02 1978-12-07 Lippke Gmbh Co Kg Paul METHOD OF MEASURING PHYSICAL PROPERTIES OF THIN BODIES WITH THE AID OF ULTRA RED RADIATION

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934919B2 (en) * 1969-07-10 1971-02-25 Fneseke & Hoepfner GmbH 852OEr langen METHOD AND DEVICE FOR THE CONTACTLESS MEASUREMENT OF THE PERCENTAGE CONCENTRATION OF WATER OR ANY OTHER SUBSTANCE IN MOVING MEASUREMENT TRACKS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405268A (en) * 1965-03-12 1968-10-08 Brun Sensor Systems Inc Radiant energy absorption gage for measuring the weight of a base material and the content of a material sorbed by the base material
US3551678A (en) * 1967-02-13 1970-12-29 Sybron Corp Paper parameter measurement using infrared radiation
US3790796A (en) * 1972-06-05 1974-02-05 Infra Systems Inc Method and apparatus for measurement of sheet opacity
DE2724919A1 (en) * 1977-06-02 1978-12-07 Lippke Gmbh Co Kg Paul METHOD OF MEASURING PHYSICAL PROPERTIES OF THIN BODIES WITH THE AID OF ULTRA RED RADIATION

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/70 *

Also Published As

Publication number Publication date
NO156105B (en) 1987-04-13
FR2452099B1 (en) 1983-07-08
SE441217B (en) 1985-09-16
GB2044443B (en) 1983-04-20
DE2910673A1 (en) 1980-09-25
BR7903020A (en) 1980-11-18
DE2910673C2 (en) 1985-08-08
NO800638L (en) 1980-09-22
SE7906518L (en) 1980-09-20
DK114080A (en) 1980-09-20
NO156105C (en) 1987-08-05
GB2044443A (en) 1980-10-15

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