Campbell Scientific CPEC200 Closed-Path Eddy-Covariance System - Manual (Page 29)

CPEC200 Closed-Path Eddy-Covariance System
back on the leg of a CM110 tripod in FIGURE 5-1, but they may also be
mounted on a vertical pipe, triangular tower, or large-diameter pole, depending
on the site requirements and the mounting options ordered.
FIGURE 5-1. CPEC200 enclosure, pump module, and EC100 mounted
to legs of CM110-series tripod
For the EC100 and the system enclosure, open the sealed bag containing the
desiccant packs and humidity card. Place two of the desiccant packs and the
humidity indicator card in the mesh pocket in the enclosure door. Reseal the
remaining two desiccant packs in the bag to use later.
5.1.3 Install EC Sensors
Install a horizontal mounting crossarm at the height desired for the EC
measurement. This crossarm must be within ±15 degrees of horizontal to level
the sonic anemometer. Point the crossarm into the predominant wind direction
to minimize wind disturbance caused by wind flowing past the mounting
structure and EC sensors. The outer diameter of the crossarm should be 3.3 cm
(1.3 in). The CM202 crossarm is shown in FIGURE 5-2.
CPEC200 Enclosure
Pump Module
EC100
Electronics
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