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 exchange.Read More
Note: Contact the Micromet Group at Campbell Scientific for questions or updates regarding the datalogger program.
|Operating Temperature||-30° to +45°C|
|Dimensions||52.1 x 44.5 x 29.7 cm (20.5 x 17.5 x 11.7 in.)|
|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)|
|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|
|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)|
|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)|
A software utility used to download operating systems and set up Campbell Scientific hardware. Also will update PakBus Graph and the Network Planner if they have been installed previously by another Campbell Scientific software package.
Supported Operating Systems:
Windows 10, 8.1, 8, and 7 (Both 32 and 64 bit)
Number of FAQs related to AP200: 53
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The molecular sieve is a direct replacement for the old magnesium perchlorate bottles. The molecular sieve may be used for any Campbell Scientific analyzer that used the old bottles.
The molecular sieve is a non-hazardous material that can be shipped to any country.
The molecular sieve has been demonstrated here by our engineering department to be effective at removing CO2 and H2O from the air sample. The change was made for two reasons:
A non-zero value can be used to perform a zero/span on an interval that is not synchronized to midnight (for example, every three hours starting at 0100 hrs).
The LI-840A uses a heater to maintain its sample cell at +50°C. Therefore, it consumes a lot more power at lower temperatures. Below 0°C, the valve heater also requires some power to keep the valves warm.
The automatic zero/span function of the AP200 is designed to do both a zero and a CO2 span. However, it is possible to disable the CO2 span and do only a zero. To do this, set public variable CO2_SPAN_PPM =0.
Possibly. For example, to measure advection because of a drainage flow on sloping terrain, an AP200 system could be deployed with two towers, upstream and downstream along the slope, with four intakes on each tower.