Campbell Scientific RAWS-F Remote Automated Weather Station for Fire Weather - Manual (Page 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 k
Ω 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 k
Ω 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
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