FI57845C - Foerfarande och anordning foer detektering av spetor i massa - Google Patents

Foerfarande och anordning foer detektering av spetor i massa Download PDF

Info

Publication number
FI57845C
FI57845C FI761331A FI761331A FI57845C FI 57845 C FI57845 C FI 57845C FI 761331 A FI761331 A FI 761331A FI 761331 A FI761331 A FI 761331A FI 57845 C FI57845 C FI 57845C
Authority
FI
Finland
Prior art keywords
sticks
light
pulp
wavelength
measuring channel
Prior art date
Application number
FI761331A
Other languages
English (en)
Finnish (fi)
Other versions
FI761331A (de
FI57845B (fi
Inventor
Jan Hill
Original Assignee
Tellusond Ab
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 Tellusond Ab filed Critical Tellusond Ab
Publication of FI761331A publication Critical patent/FI761331A/fi
Application granted granted Critical
Publication of FI57845B publication Critical patent/FI57845B/fi
Publication of FI57845C publication Critical patent/FI57845C/fi

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
    • G01N21/47—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
    • 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
    • G01N33/343—Paper pulp

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Paper (AREA)
  • Length Measuring Devices By Optical Means (AREA)
FI761331A 1975-05-14 1976-05-11 Foerfarande och anordning foer detektering av spetor i massa FI57845C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7505538A SE390458B (sv) 1975-05-14 1975-05-14 Forfarande och anordning for detektering av spetor i massa
SE7505538 1975-05-14

Publications (3)

Publication Number Publication Date
FI761331A FI761331A (de) 1976-11-15
FI57845B FI57845B (fi) 1980-06-30
FI57845C true FI57845C (fi) 1980-10-10

Family

ID=20324575

Family Applications (1)

Application Number Title Priority Date Filing Date
FI761331A FI57845C (fi) 1975-05-14 1976-05-11 Foerfarande och anordning foer detektering av spetor i massa

Country Status (7)

Country Link
US (1) US4066492A (de)
JP (1) JPS51139904A (de)
CA (1) CA1046789A (de)
DE (1) DE2621217A1 (de)
FI (1) FI57845C (de)
GB (1) GB1529507A (de)
SE (1) SE390458B (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220499A (en) * 1978-10-04 1980-09-02 Westvaco Corporation Method for determining the relative quantity of shives in a stream of fibrous particles
US4225385A (en) * 1979-01-15 1980-09-30 Westvaco Corporation Shive ratio analyzer
US4507556A (en) * 1982-12-08 1985-03-26 St. Regis Paper Company Apparatus and method for determining pulp stock consistency
IS1279B6 (is) * 1983-06-13 1987-07-07 Fmc Corporation Aðferð til gæðaeftirlits með framleiðslu úr fiski, nautgripum, svínum og alifuglum
US4886576A (en) * 1987-12-16 1989-12-12 Boise Cascade Corporation Method and apparatus for producing uniform pulp yields by controlling the operation of a refiner
US4897159A (en) * 1988-03-07 1990-01-30 P. H. Glatfelter Company Apparatus for pulp contaminant removal
US4837446A (en) * 1988-03-31 1989-06-06 International Paper Company Apparatus and process for testing uniformity of pulp
US4999513A (en) * 1988-09-09 1991-03-12 Canon Kabushiki Kaisha Particle measuring apparatus
US4931657A (en) * 1989-04-13 1990-06-05 Macmillan Bloedel Limited On-line texture sensing
US5293219A (en) * 1991-12-31 1994-03-08 Andritz Sprout-Bauer, Inc. Fiber length analyzer
FI111102B (fi) 1997-09-22 2003-05-30 Metso Automation Oy Menetelmä suspensiossa olevien hiukkasten mittaamiseksi ja mittalaite
US6744500B2 (en) * 2001-10-23 2004-06-01 Stora Enso North America Corporation Identification of material inclusions in pulp and paper using Raman spectroscopy
US20060196621A1 (en) * 2005-03-01 2006-09-07 Johansson Ola M Virtual hand sheet method and system for estimating paper properties
CA2780056C (en) 2009-12-18 2013-10-29 Fpinnovations An on-line macrocontaminant analyser and method
US20180092218A1 (en) 2015-04-28 2018-03-29 Mitsubishi Gas Chemical Company, Inc. Resin composition, prepreg, metal-foil-clad laminate, resin sheet, and printed wiring board

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1286313B (de) * 1962-10-12 1969-01-02 Berthold Anwendung eines optischen Analysenverfahrens zur Bestimmung und Regelung des Faserstoffgehaltes von Faserstoffsuspensionen unterhalb 2% atro
US3498719A (en) * 1965-02-18 1970-03-03 Continental Can Co Photoelectric consistency indicator for pulp
CH441814A (de) * 1965-07-23 1967-08-15 Papirind Forskningsinst Verfahren zur kontinuierlichen Bestimmung der Konzentration von Faseraufschwemmungen
GB1309551A (en) * 1969-05-22 1973-03-14 Nat Res Dev Measurement of optical density
US3724957A (en) * 1971-03-04 1973-04-03 Yokogawa Electric Works Ltd Concentration measuring apparatus
JPS5418596B2 (de) * 1971-09-07 1979-07-09
DE2218522C3 (de) * 1972-04-17 1975-03-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur kontinuierlichen Trübungsmessung
NL7208307A (de) * 1972-06-16 1973-12-18
SE369229B (de) * 1972-12-21 1974-08-12 Gst Regeltechnik Gmbh
SE382116B (sv) * 1973-09-27 1976-01-12 H O T Wiksell Sett for fotometrisk uppmetning av slamhalten vid rening av avloppsvatten samt anordning for genomforande av forfarandet
US3980517A (en) * 1974-07-17 1976-09-14 Sentrol Systems Ltd. Continuous on-machine control of bleaching chemicals

Also Published As

Publication number Publication date
DE2621217C2 (de) 1989-05-11
SE7505538L (sv) 1976-11-15
CA1046789A (en) 1979-01-23
FI761331A (de) 1976-11-15
GB1529507A (en) 1978-10-25
SE390458B (sv) 1976-12-20
JPS51139904A (en) 1976-12-02
FI57845B (fi) 1980-06-30
JPS5413522B2 (de) 1979-05-31
US4066492A (en) 1978-01-03
DE2621217A1 (de) 1976-12-02

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Legal Events

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MM Patent lapsed
MM Patent lapsed

Owner name: AB TELLUSOND