GB1391207A - Particle analyzing apparatus - Google Patents

Particle analyzing apparatus

Info

Publication number
GB1391207A
GB1391207A GB2724972A GB2724972A GB1391207A GB 1391207 A GB1391207 A GB 1391207A GB 2724972 A GB2724972 A GB 2724972A GB 2724972 A GB2724972 A GB 2724972A GB 1391207 A GB1391207 A GB 1391207A
Authority
GB
United Kingdom
Prior art keywords
aperture
coil
conduit
high frequency
capacitor
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
GB2724972A
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 GB1391207A publication Critical patent/GB1391207A/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

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)
  • Investigating Or Analysing Biological Materials (AREA)
GB2724972A 1971-06-29 1972-06-12 Particle analyzing apparatus Expired GB1391207A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15782971A 1971-06-29 1971-06-29

Publications (1)

Publication Number Publication Date
GB1391207A true GB1391207A (en) 1975-04-16

Family

ID=22565449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2724972A Expired GB1391207A (en) 1971-06-29 1972-06-12 Particle analyzing apparatus

Country Status (6)

Country Link
US (1) US3689833A (https=)
JP (1) JPS5219998B1 (https=)
CA (1) CA952194A (https=)
DE (1) DE2228586C3 (https=)
FR (1) FR2143701B1 (https=)
GB (1) GB1391207A (https=)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944917A (en) * 1973-08-13 1976-03-16 Coulter Electronics, Inc. Electrical sensing circuitry for particle analyzing device
FR2408117B1 (fr) * 1977-11-07 1982-04-16 Agronomique Inst Nat Rech Procede et appareil de mesure des dimensions de fibres de bois
US4972137A (en) * 1989-05-31 1990-11-20 Coulter Electronics, Inc. Isolation circuit for blood cell counter
US5576495A (en) * 1995-10-23 1996-11-19 The Babcock & Wilcox Company Two phase flow meter
CA2229528A1 (en) 1998-02-13 1999-08-13 Shailesh Mehta Apparatus and method for analyzing particles
EP1556169A1 (en) * 2002-10-30 2005-07-27 The Procter & Gamble Company Dynamic electrostatic aerosol collection apparatus for collecting and sampling airborne particulate matter
US7299683B2 (en) * 2006-03-07 2007-11-27 General Electric Company Metal particle sensor system
US9494540B2 (en) 2006-08-21 2016-11-15 Aspect Ai Ltd. System and method for a nondestructive on-line testing of samples

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981066A (en) * 1930-06-20 1934-11-20 Telefunken Ges Fur Drahtiose T High frequency coupling apparatus
US2625588A (en) * 1952-05-23 1953-01-13 Melville F Peters Apparatus for measuring potential differences in liquid
US3502974A (en) * 1966-05-23 1970-03-24 Coulter Electronics Signal modulated apparatus for generating and detecting resistive and reactive changes in a modulated current path for particle classification and analysis

Also Published As

Publication number Publication date
US3689833A (en) 1972-09-05
CA952194A (en) 1974-07-30
FR2143701B1 (https=) 1973-07-13
DE2228586C3 (de) 1975-08-14
DE2228586A1 (de) 1973-01-11
JPS5219998B1 (https=) 1977-05-31
FR2143701A1 (https=) 1973-02-09
DE2228586B2 (de) 1974-12-19

Similar Documents

Publication Publication Date Title
US3471784A (en) Combination voltage and magnetic loop
Doty et al. A multinuclear double-tuned probe for applications with solids or liquids utilizing lumped tuning elements
Nishikawa et al. Helices and surface coils for low-field in vivo ESR and EPR imaging applications
US3916310A (en) Electronic measuring instrument arrangement for measuring electrical A-C quantities
EP0073614A2 (en) Double-tuned single coil probe for nuclear magnetic resonance spectrometer
GB1391207A (en) Particle analyzing apparatus
US3173086A (en) Apparatus including mechanical vibration detector means for detecting and locating incipient internal faults in electric induction apparatus
US4680550A (en) High-frequency antenna device in apparatus for nuclear spin tomography and method for operating this device
US3404332A (en) Magnetic resonance devices for accurately measuring magnetic fields, in particular low magnetic fields, on board of a movable body
US2655107A (en) Electromagnetic fluid pump
US2734380A (en) mittelmann
James An induction flowmeter design suitable for radioactive liquids
Klein et al. Radio frequency hybrid tees for nuclear magnetic resonance
GB914751A (en) Improved device for the measurement of magnetic field by magnetic resonance
US3402346A (en) Coaxial receiver coil and capacitor structure for probes of uhf gyromagnetic spectrometers
US2446195A (en) Tester for electrical shieldings
US2235521A (en) Frequency indicator
US3372331A (en) Gyromagnetic spectrometer having a tapered dielectric transition between a coaxial line and a helix structure
Rinard et al. A wire‐crossed‐loop resonator for rapid scan EPR
US2579751A (en) High-frequency bridge circuit
Strandberg Recording magnetic-resonance spectrometer
US2813972A (en) Microwave mixer
US3931572A (en) Method and apparatus for measuring magnetic fields utilizing odd harmonics of an excitation signal
US2996664A (en) Corona detector
US5049840A (en) Cooling device for electrical circuit configurations

Legal Events

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