WA15

WA15 Wind Set

With a proven track record of successful installations, the Vaisala Wind Set WA15 has earned its reputation as the industry standard in the wind sensor market. The WA15 consists of a Vaisala Anemometer WAA151, a Vaisala Wind Vane WAV151, an optional crossarm, a power supply and cabling.

  • Long and successful track record in meteorological applications
  • Low measurement starting threshold
  • Conical anemometer cups provide excellent linearity
  • Heated shaft prevents bearings from freezing


Sensor/Transducer type
Cup anemometer/opto-chopper


Observation range
0.4 ... 75 m/s (0.9 ... 168 mph)


Starting threshold
1)
< 0.5 m/s (1.1 mph)


Distance constant
2.0 m (6 ft 7 in)


Transducer Output

Output
0 ... 750 Hz square wave


Characteristic transfer function
Uf (wind speed) = 0.328 + 0.101 × R
(output pulse rate)


Accuracy Within 0.4 ... 60 m/s (0.9 ... 134 mph)
With characteristic transfer function
(standard deviation)
±0.17 m/s (0.38 mph)
With simple transfer function
Uf= 0.1 × R ±0.5 m/s (1.12 mph) 2)


Transducer Output Level
(I out < +5 mA)
High state > U in –1.5 V
(I out > -5 mA)
Low state < 2.0

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