Appendix C. CS700H Operation Details
C-2
When the CS700H is not active, the status LED flashes every 1.5 s.
When the ambient temperature sensor detects the temperature falling below the
Active On temperature (4 °C)
then the system becomes active and the snow
sensor is enabled (FIGURE
). The status LED flashes slightly faster at 2
flashes per second—indicating the system is active.
When the proximity sensor detects snow (for 5 s continuously), the heater
elements are turned on and the block temperature sensor is monitored. The
heaters are controlled so that the temperature inside the funnel reaches
the Set
Point temperature (10 °C)
.
The actual block temperature will be higher than the set point as
substantial heat is dissipated.
The lower heating block keeps the tipping bucket and the drain tubes from
freezing up. While the heater elements are turned on, the status LED flashes
even faster at eight flashes per second.
FIGURE C-2. Diagram Depicting Overall Operation
NOTE
