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MRK-D-0048 V4
Aeroqual Dust Sentry / AQS User Guide
Page | 66
Particle Monitor module
The Particle Monitor uses a custom Met One near forward light-scattering nephelometer to measure particle
concentration and a sharp cut inlet cyclone to physically select the particle size. This module is shown on the
far right in Figure 12-4.
Figure 12-4 The Particle Monitor uses three modules: a) the optical engine on the far right, b) the pump module in
the middle, c) the I/O module on the left
The particulate size selection (TSP
or
PM
10
or
PM
2.5
or
PM
1.0
) is determined by the sharp cut cyclone on the
Particle Monitor inlet on the outside of the Dust Sentry shown in Figure 12-5.The Particle Monitor can be
configured to measure either of these four size fractions simply by changing the inlet cyclone and making a
small change in the software.
Figure 12-5 The size selection in the Particle Monitor is determined by the sharp cut cyclone on the inlet.