Campbell-scientific CPEC200 Closed-Path Eddy-Covariance System Manual do Utilizador descarregar pdf (Página 23)

CPEC200 Closed-Path Eddy-Covariance System

4.2 Theory of Operation

The CPEC200 is used for long-term monitoring of atmosphere–biosphere

exchanges of carbon dioxide, water vapor, heat, and momentum. This

complete, turn-key system includes a closed-path gas analyzer (EC155), a

sonic anemometer head (CSAT3A), datalogger (CR3000), sample pump, and

an optional valve module for automated zero and span.

4.2.1 EC155 Gas Analyzer

The EC155 (FIGURE 4-16) is Campbell Scientific’s closed-path, mid-infrared

absorption gas analyzer that measures molar mixing ratios of carbon dioxide

and water vapor. More information about the operation of the EC155 can be

found in the manual, EC155 CO

and H

O Closed-path Gas Analyzer at

www.campbellsci.com.

FIGURE 4-16. EC155 gas analyzer

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 111 112

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