Particulate sample collector

Details Particulate sample collector Particulate sample collector

1980-12-08

1983-05-03

Swisher, S. Clement

Measuring and testing

Sampler, sample handling, etc.

Automatic control

G01N 124

Patent

active

043816819

ABSTRACT:
A particulate sample collector has a blower to draw air through ducting in which a filter collects particles. The blower is driven by a sealed inductive A.C. motor. A throttle in the ducting is controlled by a pneumatic motor in response to variation in pressure drop, to provide constant mass flow rate as the filter gradually becomes clogged.

REFERENCES:
patent: 1517144 (1924-11-01), Anderson
patent: 3438179 (1969-04-01), Jouault
patent: 3841145 (1974-10-01), Boubel
patent: 3859842 (1974-12-01), Crosby
patent: 4123932 (1978-11-01), Baker
patent: 4159635 (1979-07-01), Sehmel
patent: 4246788 (1981-01-01), Olin
Kurz, J. L., et al., A New Flow Controller for High Volume Air Samplers, for Presentation AI Annual Meeting Air Pollution Control Asso., Jun. 1975.
Stevens, R. K., et al., Sampling of Atmospheric Sulfates and Related Species Atmosphere Environment, vol. 12, pp. 55-68, Pergamon Press, 1978, Great Britain.
Harrison, W. K., Jr., et al., Constant Flow Regulators for High-Volume Air Sampler, Industrial Hygiene Journal, vol. 21, Apr. 1960, pp. 115-120.
Patterson, R. K., Aerosol Contamination from High-Volume Sampler Exhaust, APCA Journal, vol. 30, No. 2, Feb., 1980, pp. 169-171.

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