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- Product Code: 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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