| 摘要 |
<p>Disclosed is a portable, hand-held vapor sampling probe (30) for collecting vapors of compounds such as cocaine, heroin, and explosives prior to their desorption and analysis in a vapor detector. Rechargeable batteries (100) power a lamp (60) in the front face of the probe for heating target portions of a sampling surface, a puffer assembly (112) directs air jets at the target, and a motor (70) draws air samples through a collector coil (62) on whose surfaces vapors are trapped. A flexible U-shaped shroud (90) on the front face partially encloses the lamp and collector and helps to regulate air flow over the target and to protect the probe from damage. Upon contact with a surface, the shroud may activate a switch (92) which, together with a second switch (130) on the probe handle (132) and a lamp pyrometer (104), regulates heating of the target.</p> |
