PDF《For Various Trace Gas》

PRODUCT Overview The CPEC300 with EasyFlux? is a turn-key, closed-path eddy- covariance (EC) flux system for long-term monitoring of atmospheric-biosphere exchanges of carbon dioxide, water vapor, heat, and momentum.

A complete system consists of a closed-path gas analyzer (EC155 closed-path gas analyzer), sonic anemometer (CSAT3A sonic anemometer), data logger (CR6 datalogger), and sample pump. The gas analyzer's intake design and small sample cell volume (5.9 mL) provide excellent frequency response (4.3 Hz cutoff frequency) with low total system power (12 W). Additionally, the vortex intake (United States Patent No. 9,217,692) greatly reduces maintenance and maintains frequency response compared to traditional inline filters. Benefits and Features Compact, entry-level system with integrated CR6 running EasyFlux? DL Suitable for sites with easy access to the data logger Simple design for easy and quick deployment Detailed Description The gas analyzer's small sample cell volume (5.9 mL) minimizes the sample residence time (50 ms at the system's nominal flow rate,

7 LPM). This gives excellent frequency response (5.8 Hz half-power bandwidth) with low total system power (12 W). Eddy-Covariance Measurements CO2 and H2O are measured with an EC155 Closed-Path Gas Analyzer. Three-dimensional wind speed and sonic air temperature are measured with a CSAT3A sonic anemometer head. CPEC300 System Enclosure The 24.9 x 34.0 cm (9.8 x13.4 in.) enclosure houses the EC100 electronics and the CR6 datalogger attached to the lid of the enclosure. The CPEC300 enclosure can be mounted to a tripod mast, CM106 tripod leg base, tower legs, or a large-diameter pole. CPEC300 Pump Module The pump module, a standard component of the CPEC300 system, consists of a small dual-head diaphragm pump with a brushless dc motor mounted inside a fiberglass enclosure. An integral cable connects the pump module to the CPEC300 system enclosure, which provides power, temperature For Various Trace Gas Applications Ideal for applications that don't require automatic zero and span Compact Closed-Path Eddy-Covariance System with EC155 and Pump Module CPEC300 For comprehensive details, visit: www.campbellsci.com/cpec300 measurement and control, pressure measurement, and pumping speed measurement and control. Specifications Operating Temperature Range -30° to +50°C Input Voltage Range 10.5 to 16.0 Vdc Power

35 W (maximum, at cold startup)

12 W (typical) System Enclosure Dimensions

34 x

25 x

13 cm (13.4 x 9.8 x 5.1 in.) Weight 4.02 kg (8.85 lb) Pump Module Inlet Connection 3/8-in. Swagelok Pressure Sensor Range

15 to

115 kPa Pumping Speed

3 to

9 LPM (automatically controlled at the set point, typically

7 LPM) Cable Length 3.0 m (10 ft) Dimensions 35.6 x 29.2 x 13.5 cm (14.0 x 11.5 x 5.3 in.) Weight 5.4 kg (11.8 lb) For comprehensive details, visit: www.campbellsci.com/cpec300 ?

2019 Campbell Scientific, Inc. | 06/21/2019