Campbell-scientific CS700 Tipping Bucket Rain Gage and CS700H Heated R Manuel d'utilisateur télécharger pdf (Page 30)

Appendix A. CS700H Operation

When the CS700H is “not Active” the status LED flashes every 1.5 seconds.

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 (see Figure A-2). The status LED flashes slightly

faster at 2 flashes per second–indicating the system is active.

When the proximity sensor detects snow (for 5 seconds 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.

NOTE

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 A-2. Diagram Depicting Overall Operation

A-2

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Campbell-scientific CS700 Tipping Bucket Rain Gage and CS700H Heated R Manuel d'utilisateur Page 30