Campbell CR200 Manuale dell'Operatore Pagina 68

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Section 6. CR200(X) Power Supply
Auxiliary photovoltaic power sources may be used to maintain charge on lead
acid batteries. Unregulated solar panels may be connected to Charge + and
Charge channels on the datalogger wiring panel.
When selecting a solar panel, a rule-of-thumb is that on a stormy overcast day
the panel should provide enough charge to meet the system current drain
(assume 10% of average annual global radiation, kW/m2). Specific site
information, if available, could strongly influence the solar panel selection. For
example, local effects such as mountain shadows, fog from valley inversion,
snow, ice, leaves, birds, etc. shading the panel should be considered.
If help is needed in determining system power requirements, contact Campbell
Scientific's Marketing Department.
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