MRK-D-0048 V4
Aeroqual Dust Sentry / AQS User Guide
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Figure 2-5 Create more length to the inlet by sliding the black rubber grommet up the tube.
You need to make sure you have correctly and securely inserted the aluminium tube fully in to
the optical engine block.
When you are satisfied the inlet is fully pushed in to the engine block, then connect the heater
plug on the inlet to the plug coming from the adjacent particle engine control module.
Insert the three supplied 6/32 UNC retaining screws to secure the inlet to the aluminium
retaining ring
Push the fuse holder in to the “On” position to begin flowing air through the inlet.
Then perform a leak check and flow check. See Section 6.5.6 and 6.5.7.
Figure 2-6 During field installation, secure the PM inlet using the retaining screws and plug in the heater
Attach gas inlet (AQS Only)
Figure 2-7 (L-R) Dust Sentry, Dust Sentry Pro come with insert. AQS supplied with Swagelok fitting.
The gas inlet is held by a ¼ inch Swagelok compression fitting.
Attach the inlet and perform a flow check to make sure the inlet is fitted correctly and the
sample pump is working properly.
When the AQS is sampling ambient air in the field, a Kynar inlet fitting with mesh is attached
to the Swagelok nut at the end of the sample cane.