The analysis takes approximately 18 seconds. Components of this system are mounted in a field portable fiberglass case that weighs approximately 35 pounds. The Model 4100 captures a vapor or particle sampler in a reconcentrating trap. The SAW determines the mass density and reports it to a database maintained in a 486 laptop computer. The database compares the suspect sample by comparing it to a library of chemical signatures file.
Results appear on the laptop screen.
This system is on wheels and can be handled and operated by one person. An additional portable sensing unit is also available. Operators use a wiping cloth or glove or a duel-purpose sampling wand to detect a full range of explosives as well as hidden metal objects. As samples are taken, the analysis proceeds continuously. Results are displayed on a touch screen.