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Non-freezing, all-weather wind set for arctic conditions
Fully heated anemometer and wind vane (heating in cups and vanes, sensor bodies and bearings prevent snow build-up and ice formation)
High performance, accurate wind speed and wind direction measurement
Low measurement starting threshold
Conical anemometer cups provide excellent linearity

Wind speed
Sensor/transducer type	cup anemometer/opto-chopper
Measurement range	0.4...75 m/s
Starting threshold	<0.5 m/s*
Accuracy (range 0.4...60 m/s) with characteristic	±0.17 m/s **
transfer function with transfer function U=0.1xR	±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	<0.5 m
Resolution	±2.8°
Accuracy	better than ±3°
Inputs and outputs
Operating power supply
WAA252	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)
WAV252	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)
Output for WAA252 (wind speed)
Transducer output	0...75 m/s = 0...750 Hz square wave
Transfer function	U = 0.39 + 0.10 x R (U = wind speed [m/s], R = o/p pulse rate [Hz])
Transducer output level	(Iout < +5 mA) high state > 11 V (Iout > -5 mA) low state < 2 V
Output for WAV252 (wind direction)
Transducer output	6-bit parallel GRAY code
Transducer output level	(Iout < +5 mA) high state > 11 V (Iout > -5 mA) low state < 2 V
Operating temperature
With shaft heating	-55...+55 °C (-58...+131 °F)
Storage temperature	-60...+70 °C (-76...+158 °F)
For complete specifications, please see the datasheet or user guide in "Documents".

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