Campbell-scientific CPEC200 Closed-Path Eddy-Covariance System Manuel d'utilisateur télécharger pdf (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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Campbell-scientific CPEC200 Closed-Path Eddy-Covariance System Manuel d'utilisateur Page 29