Computer controlled constant concentration and size particulate

Details Computer controlled constant concentration and size particulate Computer controlled constant concentration and size particulate

1985-06-17

1987-12-01

Krass, Errol A.

Boots, shoes, and leggings

364551, 356336, 7386322, G01N 1502

Patent

active

047108878

ABSTRACT:
An aerosol generating system for maintaining a constant concentration of aerosol in a chamber is disclosed. The system includes an aerosol generator in a closed chamber. A small fan in the chamber distributes the aerosol within the chamber. A particle analyzer connected to the chamber draws aerosol samples and analyses samples to monitor at least one characteristic property of the aerosol. Typically, these are particulate concentration and particulate size. The system includes a control responsive to signals from the analyzer representing changes in the monitored characteristic property to control operation of the aerosol generator. The control is such as to maintain the characteristic property substantially constant. The system may also be equipped with humidity and temperature control elements for maintaining these factors constant within the chamber.

REFERENCES:
patent: 3938348 (1976-02-01), Rickert
patent: 4211090 (1980-06-01), Gelbard et al.
patent: 4211487 (1980-07-01), Morrison et al.
patent: 4222666 (1980-09-01), Tumanov et al.
patent: 4250629 (1981-02-01), Lewis
patent: 4313726 (1982-02-01), Chase
patent: 4419879 (1983-12-01), Bush et al.
patent: 4488248 (1984-12-01), Okada et al.
patent: 4568190 (1986-02-01), Carlon et al.
"A Microcomputer-Modified Particle Size Spectrometer" by Lewis et al, J. Aerosol Sci., vol. 9, No. 5, pp. 391-397, 1978.

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