SKC 100-3901 DPS (Deployable Particulate Sampler) System User Manual
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6
Inserting an Impaction Disc into the IMPACT Sampler
For PM2.5 or PM10 sampling, insert an impaction disc only aft er a collection
fi lter has been loaded into the fi lter cassett e.
Technical Tidbits
•
Install the rain cover (included with the DPS System) on the inlet of the
IMPACT Sampler when sampling outdoors.
•
SKC recommends using a new impaction disc for each sample.
F o r P M 2 . 5 o r P M 1 0 ,
ensure a collection filter
has been loaded into the
fi lter cassett e (see Inserting
a Collection Filter into the
IMPACT Sampler).
1
Place the impaction disc in the recessed area
on the fi lter cassett e top. The rough side of the
impaction disc should face up. SKC-supplied discs
are stamped with “UP” on the appropriate side.
Place the fi lter cassett e on the exhaust and screw
the impactor inlet and exhaust together just until
tight. Further hand-tighten by 1/4 turn only.
Do not overtighten the impactor inlet and
exhaust. Do not use the barbed fi tt ing as
leverage when tightening.
Keep the sampler upright until the inlet
is securely screwed onto the exhaust to
prevent the impaction disc from being
dislodged.