WAA252 Measurement Performance
Measurement range 0.4 ... 75 m/s (0.9 ... 168 mph)
Starting threshold 0.5 m/s (1.1 mph) 1)
Distance constant 2.7 m (8 ft 10 in)
Characteristic transfer function Uf (wind speed) 0.328 + 0.101 × R (output pulse rate)
Transducer Output Level
(Iout < +5 mA) High state > 11 V
(Iout > -5 mA) Low state < 1.5 V
Accuracy Within 0.4 … 60 m/s (0.9 … 134 mph)
With characteristic transfer function ±0.17 m/s (0.38 mph)
(standard deviation)
With simple transfer function ±0.5 m/s (1.12 mph)2)
Uf = 0.1 × R
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