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Microprocessor controlled particle counter system.

A Lieberman1

  • 1Particle Measuring Systems, Inc., Fremont, California 94578.

Journal of Parenteral Science and Technology : a Publication of the Parenteral Drug Association
|May 1, 1990
PubMed
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This study details an advanced optical particle counter featuring microprocessor control for precise particle size calibration and data logging. The instrument offers flexible reporting options and industry-standard data formats for accurate particle analysis.

Area of Science:

  • Instrumentation and Measurement
  • Particle Science and Technology

Background:

  • Accurate particle size analysis is critical in various industries, including pharmaceuticals and fluid power.
  • Existing optical particle counters require robust calibration and flexible data reporting.

Purpose of the Study:

  • To describe the operation of a microprocessor-controlled optical particle counter.
  • To highlight its advanced calibration, data recording, and reporting capabilities.

Main Methods:

  • Utilized microprocessor control for particle size calibration and data recording.
  • Employed sensors capable of measuring particles from 0.1 microns and larger, with a system range of 2 to 125 microns.
  • Stored calibration data, sensor resolution, and system changes in memory for internal adjustment of particle size channels.

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Main Results:

  • The instrument allows for operator-selectable reporting sizes or four default groups, including industry standards.
  • Features include a front-panel interface for parameter control (sample size, replications, averaging, sensor comparison).
  • Data can be outputted in differential or cumulative formats (tabular or histogram) to a printer or via RS-232C.

Conclusions:

  • The described optical particle counter provides a versatile and accurate solution for particle size analysis.
  • Its microprocessor control and flexible reporting enhance usability and data relevance for industrial applications.