CO2/H2O Atmospheric Profile System
The AP200 is a complete, integrated CO2 and H2O atmospheric profile system. It measures carbon dioxide (CO2) and water vapor (H2O) concentration from up to eight intakes, which are normally spaced along the height of a tower to give a vertical profile. The AP200 is often used in conjunction with an eddy-covariance system to measure the storage term and provide you with a more complete measure of the surface gas
Benefits and Features
- Fully integrated system
- Requires only 13 W (average at 25°C and 12 Vdc)
- Contains a Campbell Scientific CR1000X Measurement and Control Datalogger
- Automatically performs CO2 zero and span
- Automated temperature and pressure control
- Data logger program included
Specifications
System Enclosure | |
Operating Temperature | -30° to +45°C |
Power Requirements |
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Dimensions | 52.1 x 44.5 x 29.7 cm (20.5 x 17.5 x 11.7 in.) |
Weight |
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Pump Module | |
Pump Type | Dual-head diaphragm pump with a brushless dc motor |
Mounting | Mounted in an insulated, temperature-controlled box inside system enclosure |
Control | Pumping speed is automatically controlled to maintain the pump inlet pressure at the set point |
Maximum Pumping Speed | 9.0 liters per minute (LPM) |
Pressure Sensor Range | 15.0 to 115.0 kPa |
Heater | 8.0 W (turns on/off at 2°C) |
Warm-up Time | ~50 min (from -30° to +2°C) |
Fan | 0.7 W (turns on at 50°C and off at 45°C) |
Valve Manifold | |
Mounting | Mounted inside system enclosure |
Inlets | Eight air sample inlets plus one inlet for zero, one inlet for CO2 span, and one inlet for H2O span |
Connections | 0.25-in Swagelok |
Mass Flow Sensor | 0 to 1.0 standard liters per minute (SLPM) |
Heater | 8.0 W (turns on/off at 5°C) |
Warm-up Time | ~20 min (from -30° to +4°C) |
Fan | 0.7 W (turns on at 45°C and off at 43°C) |
Intake Assembly | |
Filter | 1.0-in diameter, sintered stainless-steel disk filter, 10-micron pore size |
Orifice Heater | 2 kohm (0.07 W at 12 Vdc) |
Mixing Volume | 750 mL |
Sample Connection | 0.25 in. Swagelok |
Number of Connections for Heater Cable Entry Seals | 3 (1 in, 2 out) |
Cable Diameter for Heater Cable Entry Seals | 2.8 to 6.6 mm (0.11 to 0.26 in.) |
Wire Diameter for Heater Cable Screw Terminals | 26 to 12 AWG |
Wire Stripping Length for Heater Cable Screw Terminals | 5.0 mm (0.2 in.) |
Screw Tightening Torque for Heater Cable Screw Terminals | 0.4 N•m |
Orifice Inside Diameter | 0.178 mm (0.007 in.) |
Dimensions | 31 x 12.5 x 19 cm (12 x 5 x 7.5 in.) |
Weight | 1.4 kg (3.1 lb) |