Isokinetic air sampler

Patent · Mon Jan 01 04:00:00 EST 1979

OSTI ID:863380

Sehmel, George A ^[1]

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1. Richland, WA

An isokinetic air sampler includes a filter, a holder for the filter, an air pump for drawing air through the filter at a fixed, predetermined rate, an inlet assembly for the sampler having an inlet opening therein of a size such that isokinetic air sampling is obtained at a particular wind speed, a closure for the inlet opening and means for simultaneously opening the closure and turning on the air pump when the wind speed is such that isokinetic air sampling is obtained. A system incorporating a plurality of such samplers provided with air pumps set to draw air through the filter at the same fixed, predetermined rate and having different inlet opening sizes for use at different wind speeds is included within the ambit of the present invention as is a method of sampling air to measure airborne concentrations of particulate pollutants as a function of wind speed.

• Research Organization: BATTELLE MEMORIAL INSTITUTE
• DOE Contract Number: AC06-76RL01830
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4159635
• OSTI ID: 863380
• Country of Publication: United States
• Language: English

Related Subjects

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air
air pump
air sample
air sampler
air sampling
airborne
ambit
assembly
closure
concentrations
draw
draw air
drawing
drawing air
filter
fixed
function
holder
included
incorporating
inlet
isokinetic
isokinetic air
means
measure
method
obtained
particular
particulate
plurality
pollutants
predetermined
predetermined rate
provided
pump
pumps
rate
sampler
samplers
sampling
sampling air
set
simultaneously
size
sizes
speed
speeds
therein
wind
wind speed