FI20125559A - Measurement of a path - Google Patents

Measurement of a path Download PDF

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Publication number
FI20125559A
FI20125559A FI20125559A FI20125559A FI20125559A FI 20125559 A FI20125559 A FI 20125559A FI 20125559 A FI20125559 A FI 20125559A FI 20125559 A FI20125559 A FI 20125559A FI 20125559 A FI20125559 A FI 20125559A
Authority
FI
Finland
Prior art keywords
dry matter
attenuation
lignin
absorption band
dependent value
Prior art date
Application number
FI20125559A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI125514B (en
Inventor
Markku Maentylae
Original Assignee
Metso Automation Oy
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 Metso Automation Oy filed Critical Metso Automation Oy
Priority to FI20125559A priority Critical patent/FI125514B/en
Priority to US14/402,989 priority patent/US9574994B2/en
Priority to CN201380039328.8A priority patent/CN104508458B/en
Priority to EP13794044.1A priority patent/EP2856113A4/en
Priority to PCT/FI2013/050559 priority patent/WO2013175071A1/en
Priority to CA2874690A priority patent/CA2874690C/en
Publication of FI20125559A publication Critical patent/FI20125559A/en
Application granted granted Critical
Publication of FI125514B publication Critical patent/FI125514B/en

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
    • G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
    • 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
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/34—Paper
    • G01N33/346—Paper paper sheets
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
    • G01N2021/8917—Paper, also ondulated
    • 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
    • G01N2201/06—Illumination; Optics
    • G01N2201/061—Sources
    • 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
    • G01N2201/06—Illumination; Optics
    • G01N2201/068—Optics, miscellaneous

Abstract

A detector receives optical radiation interacted with the measured sheet and is responsive to a predetermined optical absorption band of lignin, a predetermined optical absorption band of dry matter and two or more separate optical bands. The measuring unit measures a lignin dependent value on the basis of attenuation in the absorption band of lignin, and a dry matter dependent value on the basis of attenuation in the absorption band of the dry matter, and determines a general dependence of attenuation with respect to wavelength by measuring attenuations in the separate optical bands. The measuring unit forms a value representing a dry matter content on the basis of the lignin dependent value, the dry matter dependent value and the general dependence of attenuation.
FI20125559A 2012-05-25 2012-05-25 Apparatus and method for measuring a web containing cellulose and optionally lignin FI125514B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI20125559A FI125514B (en) 2012-05-25 2012-05-25 Apparatus and method for measuring a web containing cellulose and optionally lignin
US14/402,989 US9574994B2 (en) 2012-05-25 2013-05-22 Sheet measurement
CN201380039328.8A CN104508458B (en) 2012-05-25 2013-05-22 Sheet material is measured
EP13794044.1A EP2856113A4 (en) 2012-05-25 2013-05-22 Sheet measurement
PCT/FI2013/050559 WO2013175071A1 (en) 2012-05-25 2013-05-22 Sheet measurement
CA2874690A CA2874690C (en) 2012-05-25 2013-05-22 Sheet measurement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20125559 2012-05-25
FI20125559A FI125514B (en) 2012-05-25 2012-05-25 Apparatus and method for measuring a web containing cellulose and optionally lignin

Publications (2)

Publication Number Publication Date
FI20125559A true FI20125559A (en) 2013-11-26
FI125514B FI125514B (en) 2015-11-13

Family

ID=49623215

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20125559A FI125514B (en) 2012-05-25 2012-05-25 Apparatus and method for measuring a web containing cellulose and optionally lignin

Country Status (6)

Country Link
US (1) US9574994B2 (en)
EP (1) EP2856113A4 (en)
CN (1) CN104508458B (en)
CA (1) CA2874690C (en)
FI (1) FI125514B (en)
WO (1) WO2013175071A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190056317A1 (en) * 2016-02-22 2019-02-21 Danmarks Tekniske Universitet Device and method for measuring tar in a tar-environment
JP7331225B2 (en) 2018-05-30 2023-08-22 大王製紙株式会社 Method and system for processing used paper packaging
JP7150481B2 (en) * 2018-05-30 2022-10-11 大王製紙株式会社 Processing method and processing system for used paper packaging including contraindicated items
FI130248B (en) * 2019-09-23 2023-05-08 Valmet Automation Oy Measurement apparatus and method of paper web

Family Cites Families (23)

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US4159893A (en) * 1977-12-05 1979-07-03 Reserve Synthetic Fuels, Inc. Method of testing a landfill for its methane potential
DE2910673C2 (en) * 1979-03-19 1985-08-08 Paul Lippke Gmbh & Co Kg, 5450 Neuwied 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
FI75675C (en) 1984-03-23 1988-07-11 Saehkoeliikkeiden Oy A method for determining the hydrocarbon content of liquids containing its α.
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
CA1319273C (en) 1988-03-10 1993-06-22 Steven Perry Sturm Clay sensor
US5276327A (en) 1991-12-09 1994-01-04 Measurex Corporation Sensor and method for mesaurement of select components of a material
US5282931A (en) 1992-07-08 1994-02-01 Pulp And Paper Research Institute Of Canada Determination and control of effective alkali in kraft liquors by IR spectroscopy
US5672881A (en) * 1994-09-14 1997-09-30 Glyko, Inc. Charge-coupled device imaging apparatus
JPH0915156A (en) 1995-06-28 1997-01-17 Kdk Corp Spectroscopic measuring method and measuring device
GB9624035D0 (en) 1996-11-19 1997-01-08 Infrared Eng Infrared measuring gauge
FI112975B (en) * 1997-09-15 2004-02-13 Metso Automation Oy Method and apparatus for measuring quality properties of paper from a moving paper web at a paper machine
DE19831612A1 (en) * 1998-07-14 2000-01-20 Voith Sulzer Papiermasch Gmbh Measuring system
CN1103446C (en) 1998-08-17 2003-03-19 中国科学院长春光学精密机械研究所 Method and equipment for measuring the components and their contents of crude oil sample
US6355931B1 (en) * 1998-10-02 2002-03-12 The Regents Of The University Of California System and method for 100% moisture and basis weight measurement of moving paper
US6551451B2 (en) 1999-12-23 2003-04-22 Pulp And Paper Research Institute Of Canada Method for determining liquid content in chemical pulps using ramen spectrometry
FI115856B (en) 2000-02-10 2005-07-29 Metso Automation Oy Method and apparatus for measuring coating
DE102004003042A1 (en) 2004-01-20 2005-08-18 Voith Paper Patent Gmbh Basis weight of the cover layer of a fibrous web
US20090152177A1 (en) * 2006-05-12 2009-06-18 Hanaar Corp. Optical paper sorting system, method and apparatus
US7812947B2 (en) * 2008-01-21 2010-10-12 Honeywell International Inc. Apparatus and method for measuring and/or controlling paper pulp properties
EP2326938B1 (en) * 2008-09-05 2021-01-20 Valmet Automation Oy Determining the amount of starch
FI20105452A0 (en) 2010-04-26 2010-04-26 Metso Automation Oy Track measurement
CN102004084B (en) 2010-11-17 2012-07-04 武汉理工大学 Method for measuring contents of ferrous ions and iron ions in glass
US10782459B2 (en) * 2013-04-16 2020-09-22 Materion Corporation Filter array with reduced stray light

Also Published As

Publication number Publication date
FI125514B (en) 2015-11-13
WO2013175071A1 (en) 2013-11-28
CN104508458B (en) 2017-03-15
EP2856113A4 (en) 2015-06-10
US20150136993A1 (en) 2015-05-21
CA2874690A1 (en) 2013-11-28
CA2874690C (en) 2016-07-05
CN104508458A (en) 2015-04-08
US9574994B2 (en) 2017-02-21
EP2856113A1 (en) 2015-04-08

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