In 2013 the Wind Set WA15 by Vaisala has been installed in Lukla.

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: cup anemometer / opto-chopper

Measurement range: 0.4...75 m/s

Starting threshold: <0.5 m/s *

Distance constant: 2.0 m

Accuracy (range 0.4...60 m/s)

with characteristic transfer function: ±0.17 m/s **

with transfer function U=0.1xR: ±0.5 m/s

Wind direction

Sensor / transducer type: vane / optical code disc

Measurement range: 0...360°

Starting threshold: <0.4 m/s

Delay distance: 0.4 m

Resolution: ±2.8°

Accuracy: better than ±3°