This paper analyzes necessity to develop a software used to calculate standard orifice.
分析开发标准孔板设计计算软件的必要。
Then, its measurement principle and theoretical formula, as well as the structural style and technical requirements of standard orifice were expounded.
阐述了孔板流量计的流量测量原理以及理论流量计算公式、标准孔板的结构形式和技术要求。
This paper presents the significance and method of correcting the sharpness of standard orifice plate and gives some suggests for carrying out this work.
本文介绍了标准孔板尖锐度修正的意义及修正的方法，并对实施这一工作提出了新的建议。
The differential pressure fluctuation has a quite great influence upon the measure precision in measuring natural gas flow rate with the measuring device by use of standard orifice plate.
在采用标准孔板节流装置测量天然气流量时，盖压波动对测量精度影响甚大。
The material selection and airflow measurement of the standard constant flow orifice were described.
同时还对标准恒流孔的材料选择及流量测量进行了论述。
In calibrating the leak, the pressure in the ballast chamber can be precisely controlled in such a way that the standard gas flow through the orifice is close or equal to the leak rate.
在漏孔校准过程中，通过调节稳压室中的压力，很容易使标准气体流量与漏孔漏率非常接近或相等，从而避免四极质谱计的非线性影响。
In calibrating the leak, the pressure in the ballast chamber can be precisely controlled in such a way that the standard gas flow through the orifice is close or equal to the leak rate.
在漏孔校准过程中，通过调节稳压室中的压力，很容易使标准气体流量与漏孔漏率非常接近或相等，从而避免四极质谱计的非线性影响。
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