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介绍了校准风量仪的一种方法,并对结果数据进行分析。该方法采用低速环形风洞和文丘里管节流装置,以高等级数字压力计为核心溯源装置,对流经风量仪的瞬时体积流量进行校准,并对可能影响校准结果的温度和压力变化进行定量评估,通过大量的试验数据表明,该方法能较好地满足风量仪校准需求。
A method of calibrating the air flow meter is introduced, and the result data is analyzed. The method uses low-speed annular wind tunnel and venturi throttling device with a high-grade digital pressure gauge as the core traceability device to calibrate the instantaneous volume flow through the air flow meter and to quantify the temperature and pressure changes that may affect the calibration result Evaluation, through a large number of experimental data show that the method can better meet the wind gauge calibration needs.