Dust level monitoring station
SVC-EDM 265
Grimm Aerosol Technik
with a fl ow controlled pump. The particles are measured
by the physical principle of orthogonal light scattering.
Here particles are illuminated by a laser light and the
scattered signal from the particle passing through the laser
beam is collected at approx. 90° by a mirror and transferred
to a recipient diode. Each signal of the diode is fed, after
a corresponding reinforcement, to a pulse height analyser
then classifi ed to size and transmitted in each size channel.
These counts are converted each 6 seconds to a mass distribution
from which the different PM values derive.
