Calibration at varying air pressure

Calibration at varying air pressure
€ 1,250.00 *

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  • 10025
WindGuard operates the only commercially used pressurized wind tunnel worldwide where a... more
Product information "Calibration at varying air pressure"
WindGuard operates the only commercially used pressurized wind tunnel worldwide where a measurement of pressure induced effects on wind sensor performance is possible!
The wind tunnel itself is comprised of a sheet metal construction with a closed test section that is hermetically sealed, thus enabling a variation of internal air pressure. Therefore, pressure induced effects on the anemometer can be measured, rather than estimated based on theoretical assumptions. 
For the standard procedure the measurement is performed at an air velocity of about 4 m/s to 15.5 m/s with 2 m/s increments. The measurements are done at an air pressure of 700 hPa up to 1100 hPa with 50 hPa steps. Normally the measurements are performed at a constant air temperature of about 10 °C, to be able to cover an air density range of about 0.86  to 1.35 .

Note: This density range covers the influence parameter range given in the IEC 61400-12-1:2017 for the classification of anemometers.
On customer request the measurements can also be performed at a different air temperature and for a different increment size. The pressure range can be reduced, an increase is not possible. 
Processing time on request.
 Further information can be found in the report “Anemometer calibration at different air temperatures and air pressures”
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