Casella CEL Software for the Microdust dust monitor - Manual (Page 45)

When mounting a filter in the clear plastic cassette assembly, ensure the
filter is held firmly against the filter support pad, a loose filter will give
incorrect results.
When the Cyclone is pressed into the mounting block, the Cyclone spigot
should locate in the probe so that the complete assembly cannot rotate or
move laterally on the probe. Secure in position using the thumb screw.
4.3 PUF Filter Adapter
The MicroDust polyurethane foam filter (PUF filter) adapter may be used for
PM
10
, respirable and PM
2.5
sampling applications using a flow rate of
3.5 l/min. The design is based upon the Conical Inhalable Sampler (CIS)
identified in the Health and Safety Executives publication, MDHS14.
For monitoring applications the adapter is fitted to the MicroDust pro probe
as shown in Figure 20.
Pump Connection
00027
ø37 mm Filter Holder
"O" Ring
"O" Ring
Locating Spigot
PUF Filter Holder
PM /Respirable 10
ø25 mm Filter Holder
"O"
Ring
MicroDust Probe
Measuring Chamber
Locating Spigot
PUF Filter Holder PM 2.5
PUF Filter Head Cap
Adapter
ø37 mm to ø25 mm
Reducer
Figure 20: Installing the Adapter
Page 45 of 60
Sampling
Accessories
MICRODUST pro Aerosol Monitoring System &
WINDUST pro Application Software - Handbook