Chapter 3 • Planning
9
•
Operating Voltage: 10–36VDC
•
Current Draw: Same as sensor output
•
Warm Up Time: 3 seconds minimum
•
Operating Temperature: –40°C to 55°C
•
Size of Probe: 3" diameter × 1.5" high
•
Weight: 0.25lb
3.4
Wind Speed Sensor
The wind speed sensor or anemometer produces a sine wave voltage
signal with a frequency that changes linearly with the wind speed. The
frequency is transformed into a 4–20mA sensor signal output.
3.4.2
Wind Speed Sensor Specifications
•
Output: 4–20mA
•
Range: 0-100MPH
•
Accuracy: 0.2MPH over the range 11 to 55MPH
•
Operating Voltage: 10–36VDC
•
Current Draw: Same as sensor output
•
Warm Up Time: 3 seconds minimum
•
Operating Temp: –40° to +55°C
•
Size of Probe: 7" diameter × 8.5" long
•
Weight: 1lb
3.5
Wind Direction Sensor
A wind direction sensor produces a ratio metric voltage signal. That
voltage signal is transformed into a 4–20mA sensor output signal.
Figure 3-3.
Wind Speed
Sensor
Summary of Contents for SolarMagic
Page 1: ...SolarMagicTM Weather Station User Guide...
Page 4: ......
Page 32: ......
Page 33: ...Appendix A Reference Diagrams 27 Appendix A Reference Diagrams...
Page 34: ...National Semiconductor SolarMagic Weather Station User Guide 28 A 1 1 Sensor Terminal Blocks...
Page 35: ...Appendix A Reference Diagrams 29 A 1 2 Communications Power Terminal Block...