he main component of Model APS-302 is constituted of high finished anodized two impactors which are a fitted parallel particles from air stream having size greater than 10 micron while 2nd impactor constitute of PM impactor which separate particles size lesser than 10 microns and and direct this to the lower part through a inlet pipe with PM 2.5 Impactor attached in its lower part measures particles with 10- 2.5 micron size. Both these impactor are modular in design and placed parallel and get Same air partially directed in both the impactors together as per requirement. Impactors are configured for PM2.5 sampling simultaneously. Design of the Model APS-302 Sampler has been made such. That suction pump assembly heats to not influence the temp. Of filter on which PM2.5 dust is accumulating, two cabinets have been made one for pump unit where Timer is fitted to
