Measuring and testing – Instrument proving or calibrating – Gas or liquid analyzer
Patent
1997-04-17
1999-06-29
Raevis, Robert
Measuring and testing
Instrument proving or calibrating
Gas or liquid analyzer
G01N 100
Patent
active
059182547
ABSTRACT:
A low concentration aerosol generator capable of generating aerosol partis of a known particle size and count is disclosed. The device includes a substantially hollow drying chamber having a first end, a second end, and a gas circulation means for circulating a gas in a flow through the drying chamber via an inlet means and an outlet means. The first end of the drying chamber has an aerosol droplet generator capable of generating aerosol droplets of a predetermined size and which droplets contain a detectable sample within the drying chamber. The second end of the drying chamber includes a delivery tube having a first orifice arranged within the drying chamber for receiving the detectable sample and a second orifice for allowing the detectable sample to exit the drying chamber. The gas circulation means includes means for generating and regulating the flow of the gas through the drying chamber. The invention also includes a method of generating and delivering a sample particle in a low velocity air stream to an analyzing instrument using the aforementioned device.
REFERENCES:
patent: 4917830 (1990-04-01), Ortiz et al.
patent: 5259254 (1993-11-01), Zhu et al.
patent: 5298967 (1994-03-01), Wells
Bottiger Jerold R.
DeLuca Paul J.
Biffoni Ulysses John
Raevis Robert
Stolarun Edward L.
The United States of America as represented by the Secretary of
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