SKC 225-390 IMPACT Sampler - Manual (Page 5)

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Calibration and Sampling
Note: As the particle load on the fi lter increases during sampling, the pressure
drop will also increase. Therefore, use a compensating sample pump such as
the Leland Legacy
® (SKC Cat. No. 100-3002). The Leland Legacy pump will
provide 24 hours of run time at 10 L/min at a maximum pressure drop of
12 inches water.
Calibration
Calibrate pump fl ow rate with the IMPACT Sampler in line (loaded with fi lter
and impaction disc). See pump and calibrator operating instructions.
Ensure rain cover is removed
from inlet and that impactor is
loaded and fully assembled (see
Inserting a Collection Filter
into the IMPACT Sampler and
Inserting an Impaction Disc into
the IMPACT Sampler).
Screw Calibration Adapter onto
impactor inlet.
Using fl exible tubing, att ach pump inlet to outlet of impactor.
Use a short length of tubing to connect inlet of calibration adapter to outlet
of a calibrator to form a calibration train.
Calibrate the sample pump to 10 L/min.
See sample pump and calibrator
operating instructions.
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When calibration is completed,
disconnect calibrator and tubing
from adapter. Remove calibration
adapter from impactor.
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