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
13
Summary of Contents for RAWS-F
Page 2: ......
Page 40: ...RAWS F Remote Automated Weather Station for Fire Weather 32 ...
Page 45: ...Appendix A Assemble the RAWS F Station Enclosure hanger points A 5 ...
Page 46: ...Appendix A Assemble the RAWS F Station Solar panel should face the equator A 6 ...
Page 47: ...Appendix A Assemble the RAWS F Station A 7 ...
Page 48: ...Appendix A Assemble the RAWS F Station Optional transport cases A 8 ...
Page 49: ...Appendix A Assemble the RAWS F Station Wind sensor alignment tool A 9 ...
Page 50: ...Appendix A Assemble the RAWS F Station A 10 ...
Page 51: ...Appendix B Transport Cases Optional Hard transport case optional B 1 ...
Page 55: ...Appendix B Transport Cases Optional Canvas transport case optional B 5 ...
Page 57: ......