TUNNEL OF CALIBRATION

The S4 wind tunnel has been designed and built specifically for the calibration of anemometers. The flow in the test section and the procedures followed by the LAC/IDR comply with all the requirements of ENAC, MEASNET and IECRE. It has been in operation since 2003 and has since calibrated more than 25,000 anemometers.

It is a closed-loop, open-circuit, closed-chamber, current-blown wind tunnel. Its main features are:

• Test chamber:
  
  • Square section of 0.9 m sides.
  • Length 1.2 m.
• Maximum speed 30 m/s
• Turbulence intensity <0.1%.
• Uniformity >0.1%
• Equipped with 4 fans
• Total electrical power of 30 kW