TSI Instruments SidePak AM520, Руководство пользователя

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Chapter 4 42
Use a foam or lint-free swab to clean the alarm vents on the front of
the unit.
N O T I C E
DO NOT use high pressure compressed air as this may harm
the internal membrane of the alarm horn and re-aerosolize
particulate matter.
Using and Maintaining Built-in Impactors
Included with the instrument is a set of
four impactor inlets and gaskets that can
be used in place of the standard inlet to
conveniently separate specific particle
size fractions. The 50% cut-off size is
marked in micrometers (μm) on each
inlet. The four impactor inlets provide
cuts at 1.0
μm, 2.5 μm, 5 μm, and
10
μm, corresponding to PM
1.0
, PM
2.5
,
PM
5
, and PM
10
specifications respectively. All inlets are made of
conductive plastic to eliminate particle losses due to static charges.
The “standard inlet” does not have a size marking on the top edge
and does not cause any specific particle size separations. It is
intended for use with external size-selective aerosol samplers such as
a cyclone or external impactor at any flow rate within the allowable
range. When using a cyclone or external impactor, the impactor disk
should not be used.
N O T I C E
SidePak
™ monitor built-in impactors must be operated with the
flow rate set to 1.7 L/min for proper performance. Using other flow
rates will result in unknown particle size fractions. The standard
inlet can be used at any flow rate.
ALWAYS use the standard (unmarked) inlet when sampling
through an external size-selective sampler such as a cyclone
or external impactor.