Campbell-scientific CS700 Tipping Bucket Rain Gage and CS700H Heated R Instrukcja Użytkownika Pobierz pdf (Strona 7)

CS700 and CS700H Rain Gage

2.1 Heated Rain Gage

Snow Sensor and Heater

Operating Temperature Range: -20° to +5°C

Output: SDI-12

Voltage Requirements

Main Power: 10 to 30 Vdc or 12 to 28 Vac

SDI-12 Power: 9.6 to 16 Vdc

Total Current Consumption (See Figure 2-1)

Snow sensor off, heater off: 6 mA @ 12 V, 0.072 W

Snow sensor on, heater off: 12 mA @ 12 V, 0.144 W

Snow sensor on, heater on: 5.8 A @ 12 V, 70 W

As the ambient temperature falls below the “Active On Temperature” (default

4°C), the heater will turn on to heat the funnel area of the rain gauge. Once the

funnel reaches the “Funnel Set Point Temp” (default 10°C), the heater will

begin cycling on and off with a duty cycle dependent on the ambient

temperature, keeping the funnel temperature at or near 10°C.

FIGURE 2-1. Heater Operation

1 2 3 4 5 6 7 8 9 10 11 12 ... 41 42

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Campbell-scientific CS700 Tipping Bucket Rain Gage and CS700H Heated R Instrukcja Użytkownika Strona 7