Gas separation – With nonliquid cleaning means for separating media – Solid agent cleaning member movingly contacts apparatus
Patent
1974-10-11
1978-01-10
Nozick, Bernard
Gas separation
With nonliquid cleaning means for separating media
Solid agent cleaning member movingly contacts apparatus
55270, 55467, 734215R, B01D 4600
Patent
active
040677052
ABSTRACT:
A device for high-volume sampling of gases comprising a filter, means for holding the filter, and means for drawing the gas through the filter and the means for holding the filter wherein a mass flow rate sensing probe is placed in the gas flow path between the filter and the means for drawing the gas through the filter in a location such that the velocity profile of the gas across the area of gas flow where the probe is located is substantially flat and substantially invariant with respect to temperature and pressure changes in the gas, the probe being connected to means for converting a signal from the probe into the changes in the rate at which the means for drawing the gas through said filter operates so that a substantially constant mass flow rate of gas flows through the device.
REFERENCES:
patent: 2982131 (1961-05-01), Rosinski
patent: 3295359 (1967-01-01), Peck
patent: 3501899 (1970-03-01), Allen
patent: 3518814 (1970-07-01), Maynard
patent: 3528279 (1970-09-01), Lasseur et al.
patent: 3757808 (1973-09-01), Peterson et al.
Griswold Gary L.
Nozick Bernard
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