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The balanced propeller is supported in stainless steel instrument ball bearings. The propeller drives a serrated disc which generates pulses in an optical switch. The direction is obtained through an optical resolver. There is no "dead band" and the resolution and accuracy are ±1.0 degrees. There are no contacts or brushes in the assembly. The AerVane™ is made from anodized aluminum, stainless steel, ultraviolet inhibited PVC and Lexan® plastic.

A RainWise interface can provide an RS-232 output or any desired analog output including 4-20 milliamps, 0-1 VDC, etc.

Product Features

• Meets or exceeds EPA monitoring guidelines
• Accuracy traceable to NIST
• No direction dead band
• Five year guarantee
• Plug-in installation

WIND SPEED SPECIFICATIONS: Range: 0-60 m/s (120 mph) Gust to 75 m/s (150 mph) Accuracy: ±1.0% Sensor: Five blade propeller - Lexan® - uv inhibited Distance constant: = 3.0 meters (10 feet) Threshold: 0.36 m/s (0.8 mph) Transducer: Optical switch. Frequency: 10 cycles per revolution.

WIND DIRECTION SPECIFICATIONS: Range: 360 degrees - no dead band. Resolution: 1.0 degree. Accuracy: ± 1.0 degrees. Sensor: Balanced Vane with a 33 cm. (13.0 inch) radius. Delay distance: = 5.0 meters. Threshold: = .5 m/s (1.0 mph) at 10 degree deflection. Damping ratio: >.53 software corrected