DK133067B - Apparat til telling og bestemmelse af storrelsen af partikler suspenderet i en veske - Google Patents

Apparat til telling og bestemmelse af storrelsen af partikler suspenderet i en veske

Info

Publication number
DK133067B
DK133067B DK327760AA DK327760A DK133067B DK 133067 B DK133067 B DK 133067B DK 327760A A DK327760A A DK 327760AA DK 327760 A DK327760 A DK 327760A DK 133067 B DK133067 B DK 133067B
Authority
DK
Denmark
Prior art keywords
counting
bag
determining
size
particles suspended
Prior art date
Application number
DK327760AA
Other languages
English (en)
Other versions
DK133067C (da
Inventor
W H Coulter
W R Hogg
J P Moran
W A Claps
Original Assignee
Coulter Electronics
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
Priority claimed from US834860A external-priority patent/US3259842A/en
Application filed by Coulter Electronics filed Critical Coulter Electronics
Publication of DK133067B publication Critical patent/DK133067B/da
Application granted granted Critical
Publication of DK133067C publication Critical patent/DK133067C/da

Links

Classifications

    • 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
    • G01N15/10—Investigating individual particles
    • G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects
    • G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle
    • G01N15/131—Details
    • G01N15/132—Circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • H03K21/02—Input circuits
    • 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
    • G01N15/10—Investigating individual particles
    • G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects
    • G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle
    • G01N2015/135—Electrodes
    • G01N2015/136—Scanning electrodes

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Radiation (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
DK327760A 1959-08-19 1960-08-18 Apparat til telling og bestemmelse af storrelsen af partiklersuspenderet i en veske DK133067C (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US834860A US3259842A (en) 1959-08-19 1959-08-19 Particle analyzing device
US467406A US3295059A (en) 1959-08-19 1965-06-28 Particle studying device pulse analyzer

Publications (2)

Publication Number Publication Date
DK133067B true DK133067B (da) 1976-03-15
DK133067C DK133067C (da) 1976-08-23

Family

ID=27042040

Family Applications (1)

Application Number Title Priority Date Filing Date
DK327760A DK133067C (da) 1959-08-19 1960-08-18 Apparat til telling og bestemmelse af storrelsen af partiklersuspenderet i en veske

Country Status (7)

Country Link
US (1) US3295059A (da)
CH (1) CH420669A (da)
DE (1) DE1698537C3 (da)
DK (1) DK133067C (da)
FR (1) FR1505302A (da)
GB (4) GB968493A (da)
NL (2) NL254739A (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502972A (en) * 1965-03-08 1970-03-24 Robert H Berg Continuous flow particle size analyser apparatus having suspension level maintaining means
US3461030A (en) * 1965-10-22 1969-08-12 Beloit Corp Determination of fiber characteristics in paper making
US3441848A (en) * 1968-04-29 1969-04-29 Coulter Electronics Particle length measuring apparatus
US3622864A (en) * 1969-07-09 1971-11-23 Coulter Electronics Method and circuitry for generating and holding proportional against input power variations a current and a resulting voltage for particle analyzer
DE3400129C1 (de) * 1984-01-04 1985-03-21 Intec Industrie Electronic GmbH & Co, 7000 Stuttgart Schaltungsanordnung zur UEberwachung fluessiger Lebensmittel auf Verunreinigungen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551529A (en) * 1946-08-27 1951-05-01 Francis J Davis Pulse amplitude discriminator
US2837640A (en) * 1953-09-03 1958-06-03 William W Goldsworthy Pulse height analyzer
US2820895A (en) * 1953-10-28 1958-01-21 Johnstone Charles Wilkin Pulse height analyzer

Also Published As

Publication number Publication date
GB968494A (en) 1964-09-02
DE1698537A1 (de) 1973-01-04
GB968493A (en) 1964-09-02
US3295059A (en) 1966-12-27
FR1505302A (fr) 1967-12-08
NL136578C (da)
NL254739A (da)
DE1698537C3 (de) 1974-02-28
GB968491A (da)
GB968492A (en) 1964-09-02
CH420669A (de) 1966-09-15
DK133067C (da) 1976-08-23
DE1698537B2 (de) 1973-08-02

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