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Title: New Facility For Anemometer Calibrations In Air - Speed Range Of (0.05 - 1) m/s
Author: Jan Sluse Jan Gersl
Source: 2015 International Symposium on Fluid Flow Measurement
Year Published: 2015
Abstract: Increasing demand on calibrations of anemometers for low air - speed motivated development of a new device for calibrations in air - speed range of (0.05 - 1) m/ s at Czech Metrology Institute. The device is based on an aerodynamic towing tank, i.e. the meter under test is towed through a closed tube with calm air. The motion of the meter is ensured by a high stability linear motor. An optical scale is used for position measurement of the trolley with the meter. The tube of a square cross - section is 12 m long and its walls are covered by acoustic pyramid foam to prevent reflections and acoustic noise . The stability of the air inside of the tube is controlled by a thermal probe. Inter - co mparison of the towing tank with the wind tunnel standard of CMI was performed in the velocity range overlap (0.3 - 1) m/s

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