Wind Direction Sensor; heavy duty design. Special rugged design with improved dynamic features basing on high precision bearings and optimised balancing.

This sensor is designed for the acquisition and electronic transmission of wind direction data. It is suitable for applications in the field of meteorology and environmental monitoring, e. g. for automatic weather stations, at airports, on research vessels, at industrial sites, for mobile measuring systems etc.

The instrument’s rugged construction and its dust- and water repellent surface, as well as the optional high performance heating enable heavy duty applications like wind energy measurement or operation under severe climatic conditions.

Thanks to various outputs and further options there is a wide range of measuring tasks (refer to Varations).

Electrical design and principle of operation
A rotating magnet at the shaft consist of a magnetic north- and south pole, which venerates a rotating field vertical to the shaft. This rotating field will be detected by an encoder chip on a PCB. The chip has 1024 segments. A full turn of the wind vane equals to 360°.

An electronic circuitry provides an analogue data output.

Variations

• 4138.1000 – Data outputs 0…10 V and 0…720 Hz integrated heating 15…40 W (Supply: 12…26 VDC)
• 4138.1200 – Data outputs 0…20 mA and 0…600 Hz integrated heating 15…40 W (Supply: 12…26 VDC)
• 4138.1400 – Data outputs 4…20 mA and 0…720 Hz integrated heating 15…40 W (Supply: 12…26 VDC)