Title:
【発明の名称】粒子測定方法および装置
Document Type and Number:
Japanese Patent JP2636051
Kind Code:
B2
Abstract:
In a particle measurement method and apparatus, a laser beam is directed into a fluid and the intensity of light scattered by fine particles floating in the fluid is detected by a light receiving system to determine the particle diameter. A ratio of light scattering efficiency of the particles in the fluid to that in a standard fluid is determined on the base of the refractive index of the fluid in use. The particle diameter is corrected depending upon the ratio of light scattering efficiency by correcting a set value for discriminating the particle diameter or by correcting the intensity of the detected scattered light. This compensates for errors arising from the difference of the refractive index of the fluid containing the particle to be measured and assures a high accuracy in measuring the particle size.
Inventors:
FURUYA YOSHUKI
AKYAMA KOICHI
AKYAMA KOICHI
Application Number:
JP26013189A
Publication Date:
July 30, 1997
Filing Date:
October 06, 1989
Export Citation:
Assignee:
KOWA KK
International Classes:
G01N15/02; G01N15/14; G01N21/01; G01N21/47; G01N21/49; (IPC1-7): G01N15/14; G01N21/49
Domestic Patent References:
| JP3122549A | ||||
| JP3122551A |
Attorney, Agent or Firm:
Kato Taku