Combined wind speed & direction measurement (WMS301, WMS302)
Suitable for low power applications
Compact size
Fast response
Excellent linearity
The WMS301ane WMS302 are a compact sized wind sensor with the wind speed and direction sensors integrated into one unit. The rotating cup anemometer at the top of the unit provides linear response to wind speed. The vane attached to the body of the unit provides fast response to wind direction.
The cup shape, dimensions and material contribute to the high quality measurement. The cups are carefully tested to give linear response between the wind speed and angular velocity of the cup wheel. The PA plastic reinforced with carbon fiber guarantees a rigid structure even at the highest wind speeds. A relay contact output is provided for wind speed. The wind speed can be recorded either by counting the number of pulses within a fixed time period or measuring the time between successive pulses.
The wind vane is integrated into the housing of the unit, underneath the cup assembly. The vane is of durable, light weight material ensuring fast response and low inertia.
The vane’s position is detected using a potentiometer. The potentiometer features low starting and running torque, linear resistance, and long operation life. It is of a single-wiper type with an open gap of less than 5 degrees. With constant voltage applied to the potentiometer the output voltage is directly proportional to the azimuth angle.
The electronics design makes the sensor suitable for applications where low power consumption is essential. The electronics is located inside an anodized aluminium core forming not only a firm body but a watertight enclosure for the electronics, providing full protection against water, dust, pollutants and electromagnetic interference.
A mast adapter for a 30 mm tube is supplied with the sensor.
waa151.pdf
