Campbell Scientific EC155 CO2 and H2O Closed-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer - Manual (Page 24)

EC155 CO
2
and H
2
O Closed-Path Gas Analyzer
module. During zero and span the zero or span gas can be pushed into this
fitting to flow backward through the sample cell and exhausted through the
intake assembly.
The CPEC200 system includes a valve module controlled by a
CR3000 datalogger, which automates the zero gas and CO
2
span
gas flows during the zero-and-span procedure.
6.3 Wiring and Connections
FIGURE 6-5 and FIGURE 6-6 below show EC100 electronics panel and the
bottom of the EC100 enclosure, respectively. Refer to these figures during
wiring and connecting.
FIGURE 6-5. EC100 electronics front panel. The picture on the left
shows the panel as it is shipped from the factory (enhanced
barometer shown). The picture on the right shows the panel after
the user has done all the wiring and made all connections (basic
barometer used).
NOTE
14