JPS56151340A - Particle analyzer - Google Patents

Particle analyzer

Info

Publication number
JPS56151340A
JPS56151340A JP5599280A JP5599280A JPS56151340A JP S56151340 A JPS56151340 A JP S56151340A JP 5599280 A JP5599280 A JP 5599280A JP 5599280 A JP5599280 A JP 5599280A JP S56151340 A JPS56151340 A JP S56151340A
Authority
JP
Japan
Prior art keywords
voltage
sensibility
amplifier
variable amplifier
indicator
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.)
Granted
Application number
JP5599280A
Other languages
Japanese (ja)
Other versions
JPH0146817B2 (en
Inventor
Masayoshi Hayashi
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.)
Sysmex Corp
Original Assignee
Sysmex 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 Sysmex Corp filed Critical Sysmex Corp
Priority to JP5599280A priority Critical patent/JPS56151340A/en
Publication of JPS56151340A publication Critical patent/JPS56151340A/en
Publication of JPH0146817B2 publication Critical patent/JPH0146817B2/ja
Granted 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 Analysing Biological Materials (AREA)

Abstract

PURPOSE:To enable manual adjustment of sensibility irrespective of the concentration of a suspension, by a method wherein, the ratio of outputs of a high-threshold and a low threshold circuits can be read directly in a Coulter counter. CONSTITUTION:A signal, detected based on a difference in impedance between a particle and liquid by means of a particle detector 1, is converted into a pulse signal and inputted to a variable amplifier 3. The output of the variable amplifier 3 passes through a high level threshold circuit 4 and a low level threshold circuit 5, and is converted into an analogue voltage as the number of particles per unit time by frequency-voltage converters 6 and 7. After the voltage at the high level side is amplified by an amplifier 8, the two analogue voltages are compared by a comparison amplifier 10 to be indicated in an indicator 11. The pointer of the indicator 11 also changes with a change in the sensibility resulting from a change in the concentration of the suspension. As a result, a voltage regulator 2 is regulated by hand in a manner to take a direct reading of said point to adjust the sensibility of the variable amplifier 3.
JP5599280A 1980-04-25 1980-04-25 Particle analyzer Granted JPS56151340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5599280A JPS56151340A (en) 1980-04-25 1980-04-25 Particle analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5599280A JPS56151340A (en) 1980-04-25 1980-04-25 Particle analyzer

Publications (2)

Publication Number Publication Date
JPS56151340A true JPS56151340A (en) 1981-11-24
JPH0146817B2 JPH0146817B2 (en) 1989-10-11

Family

ID=13014572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5599280A Granted JPS56151340A (en) 1980-04-25 1980-04-25 Particle analyzer

Country Status (1)

Country Link
JP (1) JPS56151340A (en)

Also Published As

Publication number Publication date
JPH0146817B2 (en) 1989-10-11

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