CA1053027A - Method and device for examining pulp for the presence of shives - Google Patents

Method and device for examining pulp for the presence of shives

Info

Publication number
CA1053027A
CA1053027A CA252,444A CA252444A CA1053027A CA 1053027 A CA1053027 A CA 1053027A CA 252444 A CA252444 A CA 252444A CA 1053027 A CA1053027 A CA 1053027A
Authority
CA
Canada
Prior art keywords
combined signal
shives
amplitude reductions
signal
temporary
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
CA252,444A
Other languages
English (en)
French (fr)
Inventor
Jan 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 AB
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
Application granted granted Critical
Publication of CA1053027A publication Critical patent/CA1053027A/en
Expired 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

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Paper (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Geophysics And Detection Of Objects (AREA)
CA252,444A 1975-05-14 1976-05-13 Method and device for examining pulp for the presence of shives Expired CA1053027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7505539A SE390459B (sv) 1975-05-14 1975-05-14 Forfarande och anordning for detektering av spetor i massa

Publications (1)

Publication Number Publication Date
CA1053027A true CA1053027A (en) 1979-04-24

Family

ID=20324576

Family Applications (1)

Application Number Title Priority Date Filing Date
CA252,444A Expired CA1053027A (en) 1975-05-14 1976-05-13 Method and device for examining pulp for the presence of shives

Country Status (7)

Country Link
US (1) US4037966A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS51139905A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1053027A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2621216A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FI (1) FI57846C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1529508A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE390459B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (8)

* 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
US5291626B1 (en) * 1992-05-01 1996-05-21 Gen Electric Machine for cleansing articles
US5477576A (en) * 1995-02-10 1995-12-26 General Electric Company Temperature compensation method for a turbidity sensor used in an appliance for washing articles
US5555583A (en) * 1995-02-10 1996-09-17 General Electric Company Dynamic temperature compensation method for a turbidity sensor used in an appliance for washing articles
GB2354067B (en) * 1999-09-08 2004-05-12 Mp Filtri Uk Ltd Contamination analyser
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3028501A (en) * 1959-06-01 1962-04-03 Rieter Joh Jacob & Cie Ag Method for measuring the volume or the weight of bodies having different size and irregularly passing through a channel or of accumulations of such bodies, particularly of fibre tufts
US3275834A (en) * 1963-04-01 1966-09-27 Daniel S Stevens Apparatus for analyzing the size and number of particles in suspension
US3153727A (en) * 1963-05-31 1964-10-20 Alan M Nathan Automatic raindrop size spectrometer and recorder
US3515885A (en) * 1966-10-14 1970-06-02 Gillette Co Apparatus for measuring sweep of continuous strip material

Also Published As

Publication number Publication date
DE2621216A1 (de) 1976-12-02
SE7505539L (sv) 1976-11-15
US4037966A (en) 1977-07-26
SE390459B (sv) 1976-12-20
JPS5550297B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-12-17
JPS51139905A (en) 1976-12-02
FI57846B (fi) 1980-06-30
GB1529508A (en) 1978-10-25
FI761332A7 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-11-15
FI57846C (fi) 1980-10-10

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