GB1527512A - Apparatus for particle study - Google Patents

Apparatus for particle study

Info

Publication number
GB1527512A
GB1527512A GB37794/75A GB3779475A GB1527512A GB 1527512 A GB1527512 A GB 1527512A GB 37794/75 A GB37794/75 A GB 37794/75A GB 3779475 A GB3779475 A GB 3779475A GB 1527512 A GB1527512 A GB 1527512A
Authority
GB
United Kingdom
Prior art keywords
circuit
switch
pulses
pulse
line
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
GB37794/75A
Other languages
English (en)
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.)
Coulter Electronics Ltd
Coulter Electronics Inc
Original Assignee
Coulter Electronics Ltd
Coulter Electronics Inc
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 Coulter Electronics Ltd, Coulter Electronics Inc filed Critical Coulter Electronics Ltd
Publication of GB1527512A publication Critical patent/GB1527512A/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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
GB37794/75A 1974-09-16 1975-09-15 Apparatus for particle study Expired GB1527512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/505,970 US3936666A (en) 1974-09-16 1974-09-16 Apparatus for measuring a particle size dividing one of the mass or particle number of a particulate system into predetermined fractions

Publications (1)

Publication Number Publication Date
GB1527512A true GB1527512A (en) 1978-10-04

Family

ID=24012640

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37794/75A Expired GB1527512A (en) 1974-09-16 1975-09-15 Apparatus for particle study

Country Status (5)

Country Link
US (1) US3936666A (cg-RX-API-DMAC7.html)
JP (1) JPS5156697A (cg-RX-API-DMAC7.html)
DE (1) DE2540752A1 (cg-RX-API-DMAC7.html)
FR (1) FR2284878A1 (cg-RX-API-DMAC7.html)
GB (1) GB1527512A (cg-RX-API-DMAC7.html)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2741321C3 (de) * 1977-09-14 1981-05-27 Wibau Industrie und Verwaltung GmbH, 6466 Gründau Verfahren zum Bestimmen der Teilchengrößenverteilung eines fallenden oder fließenden Gutstromes durch Aufnehmen und Auswerten von Videobildern
ES487980A1 (es) * 1979-03-27 1980-10-01 Contraves Ag Dispositivo para un aparato analizador de particulas
JPS57179728A (en) * 1981-04-30 1982-11-05 Toa Medical Electronics Co Ltd Apparatus for analyzing particle
WO2019167485A1 (ja) * 2018-02-27 2019-09-06 パナソニックＩｐマネジメント株式会社 粒子検出センサ
CN110996082B (zh) * 2019-12-17 2021-11-09 成都极米科技股份有限公司 投影调节方法、装置、投影仪及可读存储介质

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3444464A (en) * 1965-11-26 1969-05-13 Coulter Electronics Multiple aperture fittings for particle analyzing apparatus
US3557352A (en) * 1967-11-01 1971-01-19 Coulter Electronics Apparatus and method for measuring a dividing particle size of a particulate system
US3626166A (en) * 1970-04-15 1971-12-07 Robert H Berg Particle pulse analyzing apparatus employing linear amplification and logarithmic conversion
US3657725A (en) * 1970-04-28 1972-04-18 Gen Science Corp Particle counting system
US3686486A (en) * 1970-12-02 1972-08-22 Coulter Electronics Apparatus for obtaining statistical hematological indices and analyzing same and method
US3783391A (en) * 1971-02-08 1974-01-01 Coulter Electronics Axial trajectory sensor having gating means controlled by pulse duration measuring for electronic particle study apparatus and method
US3742194A (en) * 1971-05-03 1973-06-26 Technican Instr Corp Method and apparatus for providing direct real-time determination of a particulate population

Also Published As

Publication number Publication date
JPS5156697A (en) 1976-05-18
US3936666A (en) 1976-02-03
FR2284878B1 (cg-RX-API-DMAC7.html) 1978-06-23
DE2540752A1 (de) 1976-04-01
FR2284878A1 (fr) 1976-04-09

Similar Documents

Publication Publication Date Title
GB1249470A (en) Apparatus and method for measuring the dividing particle size of a particulate system
US3327103A (en) Device including a logical multiplication matrix for calculating correlation functions
GB950647A (en) Improvements in and relating to digital voltmeters
GB1254891A (en) Control method and apparatus for a particle analyzer
US3588699A (en) Circuit for converting time delay to voltage
US3938038A (en) Method and apparatus for providing primary coincidence correction during particle analysis
GB1102539A (en) Improvements in or relating to electric signal integrating apparatus
GB1162941A (en) Automatic Hematocrit Meter
US3473010A (en) Apparatus and method for determining mean particle volume
GB1204667A (en) Improvements relating to process and apparatus for obtaining an electrical pulse frequency from an analogue signal
US2976413A (en) Mass spectrometer
US3514700A (en) Voltage ratio computer
US3916193A (en) Radiation flux measuring device
US3560727A (en) Function generator having a multi-channel amplifying system with each channel having an adjustable scope and break point
GB1375556A (cg-RX-API-DMAC7.html)
GB1303951A (cg-RX-API-DMAC7.html)
US3624638A (en) Signal-converting method and apparatus
JPH079459B2 (ja) 荷電粒子線線量計
US3465249A (en) Wide frequency band signal converter
US3502855A (en) Differential analyzer with variable integration limits
GB1347347A (en) Division system for a computing instrument
JPS5722568A (en) Fast peak detection circuit
US3894221A (en) Speed up circuit in an apparatus for measuring a dividing particle size of a particulate system
GB960922A (en) Improvements in and relating to measuring apparatus
JPS6275371A (ja) Ｍｃｐ荷電粒子計数装置

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee