Envco – Environmental Equipment

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.

Optimal for low-power applications
The electronics are designed specifically for applications where low power consumption is essential.

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 aluminium 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

Please read specification sheet and order guide prior to placing an order. Vaisala products are professional grade instruments and have options specific to your application. This information needs to be detailed.