6. Technical Data
6.1 WAA151 Specifications
Table 4 Measurement Performance
Property Description/Value
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
0 … 75 m/s (0 … 168 mph) 0 … 750 Hz square wave
Characteristic transfer function Uf (wind speed) = 0.328 + 0.101 × R (output
pulse rate)
Transducer Output Level
(I
out
< +5 mA) High state > U
in
–1.5 V
(I
out
> -5 mA) Low state < 2.0 V
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 U
f
= 0.1 × R ±0.5 m/s (1.12 mph)
1) Measured with the cup wheel in position least favored by flow direction. The optimum
position yields a < 0.35 m/s (0.8 mph) starting threshold.
Table 5 Inputs and Outputs
Property Description/Value
Electrical connections MIL-C-26482 type, 6-wire cable
Cabling 6-wire cable through cross arm
Recommended connector at cable end SOURIAU UTS6JC10E6P
Operating power supply U
in
= 9.5 … 15.5 VDC, 20 mA typical
Chapter 6 – Technical Data
17
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