GB1154350A - Determination of Fibre Characteristics in Paper Making - Google Patents

Determination of Fibre Characteristics in Paper Making

Info

Publication number
GB1154350A
GB1154350A GB44756/66A GB4475666A GB1154350A GB 1154350 A GB1154350 A GB 1154350A GB 44756/66 A GB44756/66 A GB 44756/66A GB 4475666 A GB4475666 A GB 4475666A GB 1154350 A GB1154350 A GB 1154350A
Authority
GB
United Kingdom
Prior art keywords
fibre
amplitude
predetermined
sample
dilution
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
GB44756/66A
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.)
Beloit Corp
Original Assignee
Beloit Corp
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 Beloit Corp filed Critical Beloit Corp
Publication of GB1154350A publication Critical patent/GB1154350A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/04—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B7/042—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/12—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/02—Investigating particle size or size distribution
    • 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 paper pulp
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/09—Uses for paper making sludge
    • Y10S162/10—Computer control of paper making variables

Abstract

1,154,350. Electro-physical measurements determining fibre size. BELOIT CORP. Oct. 6, 1966 [Oct.22, 1965], No.44756/66. Heading G1N. [Also in Division G3] The invention relates to measuring the size of fibre particles in a paper-making process from the amplitude and duration of pulses derived by the "boulter" principle. The paper stock is continuously sampled and brought to a predetermined dilution and conductivity before passing through the measuring circuit. The system is illustrated by block-diagrams which are largely self-explanatory. Sample control Fig. 1 The sample flow is continuously monitored and controlled; the dilution-water-flow is monitored and controlled to a predetermined ratio with the sample; after heating to a controlled temperature, the conductivity is monitored to control the electrolyte added to the dilution-water to maintain a predetermined conductivity. Length of the fibre is determined from the duration of the pulse which is clipped to constant amplitude and integrated to produce a sawtooth with a maximum amplitude proportional to the pulse duration Fig. 2 (not shown). A resetable holding circuit for the sawtooth maximum amplitude is illustrated in Fig. 6 (not shown). Diameter of the fibres is determined from the pulse amplitude. Errors due to coincidence of two or more fibres is eliminated by holding the signal for a "threshold maximum fibre length" - any signal in excess of this inhibits gating of the holdcircuit, Fig. 3 (not shown). In addition held sample values could be compared with a predetermined maximum value and rejected if in excess of this. These circuits may be combined to provide fibre volume and consistency analyzing arrangements Figs.4, 5 (not shown).
GB44756/66A 1965-10-22 1966-10-06 Determination of Fibre Characteristics in Paper Making Expired GB1154350A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50176765A 1965-10-22 1965-10-22

Publications (1)

Publication Number Publication Date
GB1154350A true GB1154350A (en) 1969-06-04

Family

ID=23994935

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44756/66A Expired GB1154350A (en) 1965-10-22 1966-10-06 Determination of Fibre Characteristics in Paper Making

Country Status (6)

Country Link
US (1) US3461030A (en)
DE (1) DE1598146C3 (en)
ES (1) ES332651A1 (en)
FR (1) FR1497820A (en)
GB (1) GB1154350A (en)
SE (1) SE328468B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2341169A (en) * 1998-09-01 2000-03-08 Ivor Watkins A dosage control system

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620914A (en) * 1967-04-28 1971-11-16 Industrial Nucleonics Corp Headbox jet velocity measuring system and method
US3711688A (en) * 1968-06-27 1973-01-16 Bunker Ramo Computer control of paper machine in which basis weight is controlled through control of stock flow
US3711687A (en) * 1968-06-27 1973-01-16 Bunker Ramo Computer control of parallel paper mill refiners for controlling the freeness of stock by controlling the stock temperature rise through each refiner
CA942870A (en) * 1970-08-29 1974-02-26 Tsutomu Tamura Apparatus for detecting yarn quality information
US3688191A (en) * 1970-09-10 1972-08-29 Coulter Electronics Electronic particle study apparatus with fluid circulating system
DE2329826C2 (en) * 1972-06-13 1984-02-23 Krautkrämer GmbH, 5000 Köln Ultrasonic circuit arrangement for measuring the speed of sound in a test object
SE393864B (en) * 1975-12-01 1977-06-20 Svenska Traeforskningsinst CONCENTRATION DETERMINATION PROCEDURE
CA1095738A (en) * 1977-07-01 1981-02-17 Horatio Hughes, Jr. Shive ratio analyzer
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
NO143583C (en) * 1979-02-13 1983-01-06 Elkem Spigerverket As PROCEDURE FOR THE EXCLUSION OF SILICATES WITH ACID.
ATE26888T1 (en) * 1981-11-09 1987-05-15 Wiggins Teape Group Ltd APPARATUS FOR DETERMINING AN ELECTRICAL CHARACTERISTIC OF A FIBER DISPERSION.
US4958295A (en) * 1986-05-21 1990-09-18 Hercules Incorporated Analyzing apparatus and method for analysis of liquid samples
US5013403A (en) * 1987-10-05 1991-05-07 Measurex Corporation Process for continuous determination of paper strength
US5104488A (en) * 1987-10-05 1992-04-14 Measurex Corporation System and process for continuous determination and control of paper strength
US5293219A (en) * 1991-12-31 1994-03-08 Andritz Sprout-Bauer, Inc. Fiber length analyzer
US5454912A (en) * 1992-09-25 1995-10-03 Dougherty; Steven J. Suspension quality monitoring apparatus
EP1102987B1 (en) * 1998-08-06 2004-03-17 Voith Paper Patent GmbH Method and apparatus for monitoring water balance in a papermachine
US7056419B2 (en) * 2002-09-30 2006-06-06 American Air Liquide, Inc. Methods for modifying electrical properties of papermaking compositions using carbon dioxide
FI120163B (en) 2005-04-04 2009-07-15 Metso Automation Oy Changing and measuring consistency

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825872A (en) * 1953-06-23 1958-03-04 Vilbiss Co Particle analyzing apparatus
US3259842A (en) * 1959-08-19 1966-07-05 Coulter Electronics Particle analyzing device
GB968491A (en) * 1959-08-19
US3345502A (en) * 1964-08-14 1967-10-03 Robert H Berg Pulse analyzer computer
US3331950A (en) * 1966-07-11 1967-07-18 Coulter Electronics Particle distribution plotting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2341169A (en) * 1998-09-01 2000-03-08 Ivor Watkins A dosage control system
GB2341169B (en) * 1998-09-01 2003-01-15 Ivor Watkins Improvements relating to water treatment

Also Published As

Publication number Publication date
DE1598146B2 (en) 1973-03-08
FR1497820A (en) 1967-10-13
SE328468B (en) 1970-09-14
ES332651A1 (en) 1967-12-01
US3461030A (en) 1969-08-12
DE1598146C3 (en) 1973-09-27
DE1598146A1 (en) 1971-04-01

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