Vaisala WM30 Wind Sensor

The Vaisala Wind Sensor WM30 is a compact and economical wind speed and direction sensor. The rotating cup anemometer at the top of the unit provides a linear response to wind speed. The vane, which is attached to the body of the unit, provides a fast response to wind direction.

Accurate Wind Measurement
The shape, dimensions, and material of the cups contribute to accurate measurement. The cups are carefully tested to give linear response between the wind speed and the angular velocity of the cup wheel. The wind vane is located directly beneath the cup assembly and is made of a durable, lightweight material that ensures fast response and low inertia.

Flexible Outputs
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 by measuring the time between successive pulses. A potentiometer detects the position of the vane. The potentiometer features low starting and running torque, linear resistance and a long operation life. It has a single wiper with an open gap of less than 5 degrees. With constant voltage supplied to the potentiometer, the output voltage is directly proportional to the azimuth angle.

Built for Harsh Conditions
The cups and vane are made of reinforced PA plastic which guarantees a rigid structure even at the highest wind speeds. The electronics are located inside an anodized aluminum core which creates not only a firm body, but a watertight enclosure for the electronics as well. This provides full protection against water, dust, pollutants and electromagnetic interference.

Easy Installation
A mast adapter for a 30 mm tube is supplied with the sensor. An installation kit for larger tube diameters, 50 ... 110 mm, is available as an option.

• Combined wind speed and direction sensor with affordable price
• Compact and light design is optimal for mobile applications
• Low power consumption
• Fast and linear response to wind

• Vaisala WM30 Datasheet.pdf