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空气相对压力系数本应为一定值,实验室测得的结果却与其真实值之间存在较大误差。分析了空气相对压力系数实验中造成实验结果误差的原因,制备了新型空气相对压力系数实验仪,介绍了仪器组成及工作原理,以及新仪器相比传统实验仪在结果准确度、测量稳定性、制作成本、仪器外观等方面的优势,并对仪器性能进行了分析计算,给出仪器的系统误差值,最后对其应用进行了展望。
Relative pressure coefficient of air should be a certain value, the results measured in the laboratory but there is a big error between its true value. The reason of the experimental result error in the experiment of air relative pressure coefficient was analyzed and a new type of air relative pressure coefficient experiment instrument was prepared. The instrument composition and working principle were introduced. Compared with the traditional instrument, the accuracy, the stability of measurement, The cost of manufacture, the appearance of the instrument and so on. The performance of the instrument was analyzed and calculated, the systematic error value of the instrument was given. Finally, the application of the instrument was prospected.