Calibration Services

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...

Measurements of temperature-induced effects are performed in a climate wind tunnel. The whole wind tunnel is placed in an insulated and temperature-controlled chamber. Therefore, temperature-induced effects on the whole anemometer can be measured rather than relying on simple assumptions (e. g., for mechanical anemometers, temperature only influences bearing friction). For...

High speed calibrations (> 38 m/s) are performed in our large-scale wind tunnel. Measurements of wind sensors are possible with flow speeds up to at least 90 m/s. Flow speed calibrations usually start at a flow speed range of 10 m/s, with increments of 10 m/s at one yaw orientation. incl. costs for energy

Measurement in accordance to ISO 17713-1. The starting threshold will be determined by measuring the lowest wind speed at which the cups of the anemometer start to continuously turn and the anemometer is producing a measurable output signal. The anemometer is mounted with a tilt angle of 0 deg. During the measurements, the tunnel speed is slowly increased from 0 m/s upwards....

Wind tunnel measurements of starting threshold of wind vanes are performed in accordance to the ASTM D 5366 – 96. The starting threshold is determined by measuring the lowest speed at which the vane is moving from a 10° deflection to a position within 1° distance from the vane equilibrium state. The wind vane is mounted with a tilt angle of 0 deg. During the measurements,...