Wind speed |
|
Sensor / transducer type
Measurement range
Starting threshold
Distance constant
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 *
2.0 m
±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 |
vane / optical code disc |
|
Measurement range
(wind speed 0.4...75 m/s) |
0...360° |
|
Starting threshold |
<0.4 m/s |
|
Delay distance |
0.4 m |
|
Resolution |
±2.8° |
|
Accuracy |
better than ±3° |
Inputs and outputs |
|
Operating power supply
WAA151, WAV151 |
U=9.5...15.5 VDC, 20 mA typical |
|
Heating power supply
WAA151, WAV151 |
20 VAC or VDC, 500 mA nominal |
|
Output for WAA151 (wind speed)
|
|
|
Transducer output |
0...75 m/s = 0...750 Hz square wave |
|
Transfer function |
U = 0.328 + 0.101 x R
(U = wind speed [m/s], R = o/p pulse rate [Hz]) |
|
|
Transducer output
level |
(Iout < +5 mA) high state > Uin-1.5 V
(Iout > -5 mA) low state < 2.0 V |
|
Output for WAV151 (wind direction) |
|
|
Transducer output |
6-bit parallel GRAY code |
|
Transducer output
level |
(Iout < +5 mA) high state > Uin-1.5 V
(Iout > -5 mA) low state < 1.5 V |
Operating temperature |
|
With shaft heating
Storage temperature |
-50...+55 °C (-58...+131 °F)
-60...+70 °C (-76...+158 °F) |
For complete specifications, please see the datasheet or user guide in "Documents".