The Wind Monitor is a high performance, rugged wind sensor. Its simplicity and corrosion resistant construction make it ideal for a wide range of wind measuring applications. The wind speed sensor is a four blade helicoid propeller. Propeller rotation produces an AC sine wave voltage signal with frequency directly proportional to wind speed. Slip rings and brushes are eliminated for increased reliability.

The wind direction sensor is a rugged yet lightweight vane with a sufficiently low aspect ratio to assure good fidelity in fluctuating wind conditions. Vane angle is sensed by a precision potentiometer housed in a sealed chamber. With a known excitation voltage applied to the potentiometer, the output voltage is directly proportional to vane angle. A mounting orientation ring assures correct realignment of the wind direction reference when the instrument is removed for maintenance. The instrument is made of UV stabilised plastic with stainless steel and anodised aluminum fittings. Precision grade, stainless steel ball bearings are used. Transient protection and cable terminations are in a convenient junction box.



The instrument mounts on standard 25 mm pipe. For offshore and marine use, Model 05106, Wind Monitor-MA features special waterproof bearing lubricant and a sealed, heavy duty cable pigtail in place of the standard junction box. Separate signal conditioning for voltage or current outputs is available. The Wind Monitor is available with two additional output signal options.

Model 05103V offers calibrated 0-1 VDC outputs (0-5 VDC optional), convenient for use with many dataloggers.

Model 05103L provides a calibrated 4-20 mA current signal for each channel, useful in high noise areas or for long cables (up to several kilometres). Signal conditioning electronics are integrated into the sensor junction box.

The radio transmitter illustrated is the rl2000, a 2-channel unit fitted with a wind speed and direction sensor, part number RL2000-20-00-FF-P2. This unit is ideally suited to general purpose environmental monitoring tasks.

Specification
Transmitter dimensions	110mm x 100mm x 57mm
Weight	200 grams
Power supply	Lithium batteries
Wind sensor dimensions	70mm high x 550mm long
Propellor	180mm diameter
Weight	1 Kg
Channels	2 analogue 1 digital
Radio frequency	457.6 MHz (standard)
Power	10 mW
Range	2 miles over open ground
Transmit rate	4 seconds to 3 minutes (standard)
Wind speed	0-60 m/s (134 mph)
Gust survival	100 m/s (220 mph)
Accuracy	Wind speed +/- 0.3 m/s (0.6 mph) Wind direction +/- 3 degrees
Life expectance	50 million revolutions