섬유

microcomputer control of particle concentrations in a cotton dust exposure system

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 261
a cotton dust animal exposure system has been modified to incorporate a microcomputer feedback loop to monitor particle concentrations. the loop's major components are a minature real-time aerosol monitor (miniram) to estimate concentrations and a microcomputer to read the miniram's data and to control a stepper motor that adjusts the amount of dilutant air mixing with respirable cotton dust. ninety minute trials of this system indicate that the standard deviation of particle concentration is within 0.68 mg/m**3 of the average concentration, insuring a near constant concentration of respirable dust throughout the exposure. (author abstract) 3 refs
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