Calibration of optical particle-size analyzer
Abstract
This invention relates to a system for the calibration of an optical particle-size analyzer of the light-intercepting type for spherical particles, wherein a rotary wheel or disc is provided with radially-extending wires of differing diameters, each wire corresponding to a particular equivalent spherical particle diameter. These wires are passed at an appropriate frequency between the light source and the light detector of the analyzer. The reduction of light as received at the detector is a measure of the size of the wire, and the electronic signal may then be adjusted to provide the desired signal for corresponding spherical particles. This calibrator may be operated at any time without interrupting other processing.
- Inventors:
-
- Oak Ridge, TN
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 863268
- Patent Number(s):
- 4135821
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- W-7405-ENG-26
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- calibration; optical; particle-size; analyzer; relates; light-intercepting; type; spherical; particles; rotary; wheel; disc; provided; radially-extending; wires; differing; diameters; wire; corresponding; particular; equivalent; particle; diameter; passed; appropriate; frequency; light; source; detector; reduction; received; measure; size; electronic; signal; adjusted; provide; desired; calibrator; operated; time; interrupting; processing; appropriate frequency; spherical particles; light source; light detector; electronic signal; particle diameter; particle-size analyzer; optical particle-size; spherical particle; /356/
Citation Formats
Pechin, William H, Thacker, Louis H, and Turner, Lloyd J. Calibration of optical particle-size analyzer. United States: N. p., 1979.
Web.
Pechin, William H, Thacker, Louis H, & Turner, Lloyd J. Calibration of optical particle-size analyzer. United States.
Pechin, William H, Thacker, Louis H, and Turner, Lloyd J. Mon .
"Calibration of optical particle-size analyzer". United States. https://www.osti.gov/servlets/purl/863268.
@article{osti_863268,
title = {Calibration of optical particle-size analyzer},
author = {Pechin, William H and Thacker, Louis H and Turner, Lloyd J},
abstractNote = {This invention relates to a system for the calibration of an optical particle-size analyzer of the light-intercepting type for spherical particles, wherein a rotary wheel or disc is provided with radially-extending wires of differing diameters, each wire corresponding to a particular equivalent spherical particle diameter. These wires are passed at an appropriate frequency between the light source and the light detector of the analyzer. The reduction of light as received at the detector is a measure of the size of the wire, and the electronic signal may then be adjusted to provide the desired signal for corresponding spherical particles. This calibrator may be operated at any time without interrupting other processing.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1979},
month = {Mon Jan 01 00:00:00 EST 1979}
}
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