Campbell-scientific RAWS-F Remote Automated Weather Station for Fire W Instrukcja Użytkownika Pobierz pdf (Strona 21)

RAWS-F Remote Automated Weather Station for Fire Weather

4.5 Wind Speed and Direction .5 Wind Speed and Direction

4.5.1 Wind Sensor 4.5.1 Wind Sensor

4.5.1.1 General Description 4.5.1.1 General Description

The Met One Wind Sensor (pn 034B-QD) shown in FIGURE 4-4 is an

integrated cup anemometer and wind vane. The anemometer consists of three

cups that sense the wind speed. These cups rotate on a vertical shaft that

magnetically activates a sealed reed switch. The reed switch opens and closes

at a rate proportional to wind speed. The wind direction is sensed by a vane.

The vane drives a 10 kΩ potentiometer. The wind speed sensor outputs a

pulse. The wind direction sensor outputs a voltage.

The Met One Wind Sensor (pn 034B-QD) shown in FIGURE 4-4 is an

integrated cup anemometer and wind vane. The anemometer consists of three

cups that sense the wind speed. These cups rotate on a vertical shaft that

magnetically activates a sealed reed switch. The reed switch opens and closes

at a rate proportional to wind speed. The wind direction is sensed by a vane.

The vane drives a 10 kΩ potentiometer. The wind speed sensor outputs a

pulse. The wind direction sensor outputs a voltage.

FIGURE 4-4. Wind sensor

Set screw holes must be

covered with labels

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 57 58

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Campbell-scientific RAWS-F Remote Automated Weather Station for Fire W Instrukcja Użytkownika Strona 21