Campbell Scientific CPEC200 Closed-Path Eddy-Covariance System - Manual (Page 21)

CPEC200 Closed-Path Eddy-Covariance System
4.1.5 Replacement Parts
Intake Filter: The EC155 intake filter (FIGURE 4-12) will become clogged
over time and must be replaced. The default replacement part is pn 26072. It is
a 2.5-cm (1.0-in) diameter, sintered stainless steel disk filter with a 20 µm pore
size encased in a molded Santoprene™ shell. An alternative 40 µm filter (pn
28698) is also available. Use a 40 µm filter if the default 20 µm filter clogs
long before the EC155 optical windows become dirty.
FIGURE 4-12. Intake filter of EC155
Sonic Wicks: A sonic wicks spares kit (pn 28902) is used to replace the wicks
on the CSAT3A. The kit includes three top wicks, three bottom wicks, an
installation tool, and adhesive.
Silica Desiccant Bags: Silica desiccant bags (FIGURE 4-13) are used to
desiccate the CPEC200 system enclosure and should be periodically replaced.
A single four-unit silica desiccant bag is pn 4905. These can be purchased in
quantities of 20 as pn 6714.
FIGURE 4-13. Single desiccant pack
Humidity Indicator Card: The replacement humidity indicator card
(FIGURE 4-14) provides a visual reference of humidity level inside the
enclosure. A single replacement card is pn 28878.
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