Campbell Scientific AP200 CO2/H2O Atmospheric Profile System - Manual (Page 31)

AP200 CO
2
/H
2
O Atmospheric Profile System
Average power varies from 14 W above 30°C to 24 W at –30°C as
shown in FIGURE 4-23. This includes 2.0 W for the intake heaters (8
intake assemblies at 0.25 W each).
FIGURE 4-23. Average power consumption relative to temperature
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 kPa to 115.0 kPa
Heater: 8.0 W, turns on/off at 2°C
Warm-up time: Approximately 50 minutes from –30°C 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 CO
2
span, and one inlet
for H
2
O 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: Approximately 20 minutes from –30°C to
4°C
Fan: 0.7 W; turns on at 45°C and off at 43°C
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