Envco – Environmental Equipment

Why Measure Wind Direction?
Wind speed is an important weather parameter to monitor and record for many applications including meteorology, aviation, shipping, insdustry, construction, and many more. Some of the more common applications are for predicting and supporting weather forcasts, determining the saftey of operating mechanical equipment like cranes and lifts in industry, estimating the efficiency of operating power generating wind farms, navigation and safe operation in the shipping industry, aircraft safety, wastewater and landfill odor control, and others.

Wind Direction is caused by air pressure gradients or the regions between weather fronts, air moves in the direction of the low pressure system. Additionally, wind direction is determined by many other factors including the Coriolis effect, friction, and land topography. Wind direction is always given as the direction the wind is coming from. For example a wind out of the east is given as an east wind, or wind direction or 90 degrees.

A wind direction sensor produces a ratiometric voltage signal. That voltage signal is transformed into a 4-19 mA sensor output signal.

Wind Direction sensor specifications
Type: Wind Vane with potentiometer
Output: 4-19 mA
Range: 0 to 360 (352 electrical, 8 open)
Accuracy: 1% of full scale
Operating Voltage: 10-36VDC
Current Draw:Same as sensor output
Warm Up Time: 3 seconds minimum
Operating Temp: -40 to +55C
Size: 8 1/2" diameter x 10 1/2" longWeight: 1 lb