Casella CEL Microdust 880 IS real time dust monitor - Manual (Page 40)

Microdust 880nm & WinDust Application Software
Handbook HB3255-03
Page 40 of 51
Aspirator unit
•
WARNING:- THE ASPIRATOR UNIT IS NOT CERTIFIED AND THEREFORE CAN
NOT BE USED IN A CONTROLLED AREA.
The fan driven aspirator unit may be used to draw all suspended particulate matter through the probe
provided no back pressure is present. The unit is assembled as indicated in the diagram below.
The aspirator and inlet tube are a push fit into the mounting block. When assembling the units
together, care should be taken to prevent damage to the ‘O’ rings. The complete assembly is located
and secured to the measurement probe with the spigot of the inlet tube engaging into the
measurement chamber aperture.
A 5 volt DC mains adapter unit or battery pack can be used to power the aspirator fan.
The aspirator unit should be cleaned periodically to ensure that accumulation of dust does not result
in erroneous readings or mechanical seizure.