DE2621217C2 - - Google Patents

Info

Publication number
DE2621217C2
DE2621217C2 DE2621217A DE2621217A DE2621217C2 DE 2621217 C2 DE2621217 C2 DE 2621217C2 DE 2621217 A DE2621217 A DE 2621217A DE 2621217 A DE2621217 A DE 2621217A DE 2621217 C2 DE2621217 C2 DE 2621217C2
Authority
DE
Germany
Prior art keywords
pulp
thickening
light
thickenings
wavelength
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.)
Expired
Application number
DE2621217A
Other languages
German (de)
English (en)
Other versions
DE2621217A1 (de
Inventor
Jan Dipl.-Ing. Taeby Se Hill
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.)
TELLUSOND STOCKHOLM SE AB
Original Assignee
TELLUSOND STOCKHOLM SE 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 STOCKHOLM SE AB filed Critical TELLUSOND STOCKHOLM SE AB
Publication of DE2621217A1 publication Critical patent/DE2621217A1/de
Application granted granted Critical
Publication of DE2621217C2 publication Critical patent/DE2621217C2/de
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
    • G01N21/47—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)
DE19762621217 1975-05-14 1976-05-13 Verfahren und vorrichtung zur untersuchung von puelpe auf das vorhandensein von verdickungen Granted DE2621217A1 (de)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
DE2621217A1 DE2621217A1 (de) 1976-12-02
DE2621217C2 true DE2621217C2 ( ) 1989-05-11

Family

ID=20324575

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762621217 Granted DE2621217A1 (de) 1975-05-14 1976-05-13 Verfahren und vorrichtung zur untersuchung von puelpe auf das vorhandensein von verdickungen

Country Status (7)

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

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
WO2011072396A1 (en) 2009-12-18 2011-06-23 Fpinnovations An on-line macrocontaminant analyser and method
EP3290454B1 (en) 2015-04-28 2020-05-06 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 ( ) * 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 ( ) * 1972-06-16 1973-12-18
SE369229B ( ) * 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
FI57845C (fi) 1980-10-10
FI761331A ( ) 1976-11-15
DE2621217A1 (de) 1976-12-02
CA1046789A (en) 1979-01-23
SE390458B (sv) 1976-12-20
SE7505538L (sv) 1976-11-15
JPS5413522B2 ( ) 1979-05-31
FI57845B (fi) 1980-06-30
US4066492A (en) 1978-01-03
JPS51139904A (en) 1976-12-02
GB1529507A (en) 1978-10-25

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition