The Model 03002 Wind Sentry anemometer and vane are professional quality wind sensors which are suitable for a wide range of wind measurement applications. These moderately priced sensors are principally of thermoplastic construction providing excellent corrosion resistance, low sensor weight, and minimal parts count. In addition to being available as a set complete with cross arm, the sensors are also available separately with mounting brackets. The anemometer has three hemispherical molded plastic cups. Cup wheel rotation produces an AC sine wave voltage signal with frequency directly proportional to wind speed. This AC voltage signal is induced in a coil by a two pole circular magnet mounted on the cup wheel shaft. One complete sine wave cycle is produced for each cup wheel revolution.

Windvane position is transmitted by a 10K ohm precision conductive plastic potentiometer which requires a regulated excitation voltage. With a constant voltage applied to the potentiometer, the output signal is an analog voltage directly proportional to azimuth angle. The plastic vane is molded directly on the anodized aluminum vane shaft.