DESCRIPTION:
The FM-9-AB2 uses a standard filter in TA's unique quick change, with no leak holder to trap any airborne particulates.  The filter is under constant surveillance via both an Alpha scintillator and a Beta pancake GM tube.

Air is drawn by a regulated pump through a three-foot inlet hose and exhausted via a flow meter through another three-foot hose. These may be extended to allow monitoring of hoods, glove boxes, stacks, etc.

Time is recorded by a computer wired into the pump circuit. The unit is completely self-contained and portable. Complete with a box of 100 filters.