Casella CEL Microdust Pro real time dust monitor - Manual (Page 38)

MicroDust Pro Aerosol Monitoring System
38 Casella CEL
TSP and Respirable adapters
Figure 20. Gravimetric and respirable adapter modules
1 Pump connection 8 Measuring chamber inlet
2 Adapter block 9 Locating spigot
3 Locating spigot 10 Cyclone
4 Inlet tube 11 Coarse dust container
5 Thumb screw 12 Filter cassette (25 mm / 37 mm)
6 37 mm-to-25 mm reducer 13 O-rings
7 MicroDust sampling probe
The basic design of the TSP and respirable adapters is the same, but with
different inlet fittings. The respirable adapter is a centrifugal separator that
uses the cyclone principle of dust separation. It draws only the respirable
fraction of particulate matter through the measurement chamber and onto the
filter (D50 cut = 4 µm at 2.2 litres/minute).