Vaisala Visibility Sensors PWD10, PWD20 and PWD20W

  • Accurate measurement of visibility
  • Robust and versatile
  • Easy to install

Visibility Sensor PWD20W for Wind Turbines:
Obstruction lights are used for marking the Wind Turbines for aviation safety. Some countries have established regulations for reducing the intensity of the obstruction lights basing on visibility. Wind Turbines can be equipped with Vaisala Visibility Sensor PWD20W, which is designed for this application. Several manufacturers have chosen Vaisala PWD20W due to its robustness and versatility.

Technical Specifications
Visibility (MOR) measurement
Measurement range
10...2,000 m (32 ft...1.2 miles)
PWD20 and PWD20W:
Measurement range
10...20,000 m (32 ft...12 miles)
Operating environment
Temperature-40...+60 °C
Humidity0...100 %RH
Inputs and outputs
OutputsRS232, RS485, analog current, relay control
Operating voltage12 VDC ... 50 VDC (electronics)
24 VAC or 24 VDC for heater option
Power consumption
PWD10, PWD20 and PWD20W
3 W (electronics with dew heater @ 12VDC)
Dimensions40.4 (w) x 69.5 (l) x 19.9. (h) cm
(15.91" (w) x 27.36" (l) x 7.83" (h))
Weight3 kg (7 lb)
For complete specifications, please see the brochure or user guide in "Documents".
Believe you can and you are halfway there.