Campbell Scientific CPEC200 Closed-Path Eddy-Covariance System - Manual (Page 22)

CPEC200 Closed-Path Eddy-Covariance System
FIGURE 4-14. Humidity indicator card
EC155 Replacement Chemical Bottles: The EC155 has two small bottles
filled with chemicals to remove CO
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and water vapor from the inside of the
sensor head. If replacement bottles are needed, two bottles are included with
pn 26511.
Diaphragm Pump: The pump module for the CPEC200 includes a small
double-head diaphragm pump with a brushless DC motor. The pump includes
a speed-control input and a tachometer to measure actual pumping speed. It is
mounted in an insulated, temperature-controlled box inside the CPEC200
system enclosure. If the pump fails, the replacement pump (FIGURE 4-15) is
available as pn 26402. The part includes the connector for easy installation.
See Appendix H, CPEC200 Pump Replacement, for instructions on replacing
the pump.
FIGURE 4-15. Diaphragm pump used in CPEC200
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