MRK-D-0048 V4
Aeroqual Dust Sentry / AQS User Guide
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3 Mounting and Site Positioning Guidelines
It is important that the positioning of the monitor is suitable so as to yield data which is representative
of that specific location.
3.1 Mounting
The monitor comes with 2x mounting brackets and 3x U-bolts for 2 inch poles. The same brackets are
used for both pole and wall mounting. To wall mount the monitor the brackets are screwed into the
wall instead of using the U-bolts.
For pole mounting:
1.
Secure top mounting bracket at a suitable height using 2x U-bolts provided
2.
Fix lower mounting bracket to the Dust Sentry chassis with screws
3.
Hang the monitor on the top mounting bracket
4.
Place U-bolt through lower mounting bracket
5.
Add nuts and washers and tighten the bottom U-bolt into position
NOTE: Only one U-bolt is used to secure the bottom bracket.
3.2 Inlet height
If monitoring is related to human exposure, the sampling inlet height should be positioned in
the “breathing zone”. This is located between 2 and 15 meters above ground level.
If monitoring is related to specific emission sources, the position of the sampling inlet can be
more flexible. It is more important that there is no obstruction between the approaching air
from the emission source and the sampling inlet.
If more than one monitor, or any other particulate instrument, is being used at the site, the
height of the inlets should be uniform.
If the monitor inlet is the highest point at the site, a lightning rod must be installed to prevent
damage to the unit during electrical storms.
3.3 Measurement Interference
The meteorological conditions of the site should be taken into consideration when positioning
the monitor. For example, there should be no obstruction to the air flow in the predominant
wind direction. A minimum clear sky angle of 120 degrees is recommended.
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