Wind speed

Sensor / transducer type
Measurement range
Starting threshold
Accuracy (range 0.4...60 m/s)
    with characteristic transfer function
    with transfer function U=0.1xR

cup anemometer / opto-chopper
0.4...75 m/s
<0.5 m/s *

±0.17 m/s **

±0.5 m/s

* Measured with cup wheel in position least favoured by flow direction. Optimum position gives approx. 0.35 m/s threshold.
** Standard deviation.

Wind direction

Sensor / transducer type
Measurement range
(wind speed 0.4...75 m/s)
Starting threshold
Delay distance
Resolution
Accuracy

vane / optical code disc
0...360°

<0.4 m/s
<0.5 m
±2.8°
better than ±3°

Inputs and outputs

Operating power supply
      WAA252
     

      WAV252


Output for WAA252 (wind speed)
      Transducer output
      Transfer function

      Transducer output level

Output for WAV252 (wind direction)
      Transducer output
      Transducer output level
         

Uin = 24 VDC ±10%, max. 3.2 A
72 W below +2 °C (+36 °F) (heating on)
1 W above +6 °C (+43 °F) (heating off)
Uin = 24 VDC ±10%, max. 2.1 A
50 W below +2 °C (+36 °F) (heating on)
1 W above +6 °C (+43 °F) (heating off)
 
0...75 m/s = 0...750 Hz square wave
U = 0.39 + 0.10 x R
(U = wind speed [m/s], R = o/p pulse rate [Hz])
(Iout < +5 mA) high state > 11 V
(Iout > -5 mA) low state < 2 V

6-bit parallel GRAY code
(Iout < +5 mA) high state > 11 V
(Iout > -5 mA) low state < 2 V                 

Operating temperature

With shaft heating
Storage temperature

-55...+55 °C (-58...+131 °F)
-60...+70 °C (-76...+158 °F)