NAVAL SURFACE WARFARE Center, DAHLGREN DIVISION, DAHLGREN DIVISION, DAHLGREN, Va 22448-5100

99 -- AERODYNAMIC PARTICLE SIZERS (APS) OPTICAL ASSEMBLIES POC Kimberly Elbon, Contract Specialist, Code S11C, Paul Learn, Contracting Officer, Code S11, (540) 653-7478. The Naval Surface Warfare Center, Dahlgren Division proposes to modify Contract N00178-95-C-1046 with TSI, Incorporated of St. Paul, Minnesota to increase the number of deliverables. The items to be procured include 8 additional Aerodynamic Particle Sizer (APS) Optical Assembiles Model number APS 3310 and 2 Aerodynamic Particle Sizer (APS) assemblies model number APS 3320. Each APS model number APS 3310 shall consist of optics, a sensing chamber, a laser power supply, an inlet nozzle and a photo multiplier tube detector. The assemblies shall meet the Navy's minimum requirement to size and count particles between the ranges of .5 to 30 microns with a bandwidth of .3 microns. Furthermore, the Navy requires that classified sizes, which are to be programmable and detected, shall be transmitted as an analog pulse output to a Navy provided processing unit. Each APS model number APS 3320 shall consist of optics, a sensing chamber, laser power supply, inlet nozzle, photomultiplier tube detector, electronic circuit boards and components, pumps and filters and display and panel controls which are to be housed in a cabinet. The assemblies shall meet the Navy's minimum requirement to size and count particles between the ranges of .5 to 15 microns, with a bandwidth of .3 microns. See Numbered Note(s): 22 (0005)

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