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Vaisala Wind Set WA15

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Overview

High-performance wind measurement set
Long and successful track record in meteorological applications
Low measurement starting threshold
Conical anemometer cups provide excellent linearity
Heated shaft prevents bearings from freezing

Technical Specifications

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 > U_in-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 > U_in-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".

Services

Technical Support
Get fast, easy access to professional support over the entire life cycle of your equipment. The Vaisala HelpDesk is your single contact point for technical inquiries related to Vaisala products and systems.

Spare Parts
Get rapid access to the spare parts you need to maximize the uptime of your equipment and ensure reliable and accurate operation. In addition to standard spare part delivery, we also offer an express service where parts are shipped within one business day.

Repair Services
Vaisala repair services include fault tracing and repair or replacement of failed components, as well as final testing to ensure your equipment is functioning properly. Repairs can be carried out on site or at one of our service centers.

Warranty
All Vaisala products and services are covered by a 12-month warranty as standard, with selected products covered for up to 24 months. During this period you benefit from free repair or replacement of faulty equipment. With Vaisala’s extended warranty, you get free repair or replacement for five years.

Documents

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