Campbell Scientific AP200 CO2/H2O Atmospheric Profile System - Manual (Page 19)

AP200 CO
2
/H
2
O Atmospheric Profile System
tubing has an aluminum core to minimize diffusion through the tubing wall and
a UV-resistant, black, high-density polyethylene jacket. Maximum tubing
length available is a 500-ft roll.
Intake Heater Cabling: The intake assemblies have a small heater in the rain
diverter to prevent condensation. For normal applications, bulk cable is cut to
length and installed on site to provide power to the intake assemblies. Heater
cables may be daisy-chained from one intake assembly to the next. Campbell
Scientific pn 9922 cable or its equivalent is recommended for this connection.
This cable consists of a twisted red/black pair of wire gauge (AWG) 20 within
a rugged Santoprene jacket.
System Power Cable: The AP200 requires a cable to connect it to the user’s
battery or other power source. The same cable may be used for the system
power as for the heaters (pn 9922) if the length is short (less than 3 m, or 10 ft).
The AP200 requires a current from 1.0 A to 3.0 A, which will cause a voltage
drop in the power cable of 0.2 V to 0.6 V for a 10-ft length of pn 9922 cable.
The corresponding power loss is 0.2 W to 1.8 W. For most applications the
preferred power cable is CABLEPCBL-L. This cable consists of a twisted
red/black pair of wire gauge (AWG) 16 within a rugged Santoprene jacket. It
is cut to the specified length and the end finished for easy installation. The
voltage and power losses will be a factor of 2.5 smaller than for the pn 9922
cable. If the power cable must be longer than 8 m (25 ft), contact Campbell
Scientific.
AC/DC Power Adapter Kit: A power adapter kit can be configured within
the AP200 system enclosure to allow the AP200 to be powered from AC mains
power. The AC/DC Power Adapter Kit (pn 28549) is shown in FIGURE 4-8
and instructions for installing the adapter kit are given in Appendix G, AC/DC
Power Adapter Kit.
FIGURE 4-8. AC/DC power adapter kit installed in AP200
CF Card: The AP200 stores data on a CompactFlash ® memory card. There
are two types of CF cards available today: Industrial Grade and Standard or
Commercial Grade. Industrial Grade PC/CF cards are certified to a higher
standard in that they are designed to operate over a wider temperature range,
offer better vibration and shock resistance, and have faster read/write times
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