【摘要】 分析超声波热量表流量测量原理及误差产生原因,同时基于流体力学修正流量原理并结合大量实验数据提出一种新的流量修正方法——查表法。实验结果表明,用查表法修正流量后,测量误差小于±2%,达到了超声波热量表二级表的国家标准。更多还原

【Abstract】 The theory of ultrasonic heat meter’s flow measurement and error causes is analyzed.At the same time,based on the principle of fluid mechanics and combined with a large number of experimental data puts forward a modified method that is the lookup table method.The experimental results show that after modifying flow by look-up table method,the measurement error less than ±2% which reach to the national standard of ultrasonic heat meter.更多还原