Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1994-03-16
1996-02-27
Raevis, Robert
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
73 2341, 73 2340, 86 11, G01N 3394, G01N 3700
Patent
active
054938902
ABSTRACT:
A method and apparatus for calibrating contraband vapor/particle detection devices is described. The invention includes a desorb site onto which may be deposited solutions containing known concentrations of one or more of the specific compounds to be detected. The desorb site, which may be rapidly heated to vaporize the particles contained in the solution deposited on its surface, is housed in a sealable chamber. The vapor and/or particles become entrained in an air stream forced across the surface of the desorb site, and the airstream is then delivered through a snout to the contraband vapor particle detector.
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Bromberg Edward E. A.
Curby William A.
Dussault Daniel A.
MacDonald Stephen J.
Larkin Daniel S.
Raevis Robert
Thermedics Detection Inc.
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