双波纹管差压计测量天然气流量中的附加计算误差问题

Additional Calculation Error Measured with Dual Bellows Differential Flowmeter

本文讨论了从双波纹管差压流量卡片上,用求积仪求得差压和静压的平均值计算天然气流量方法所产生的附加计算误差;分析了差压和静压在不同的变化趋势下,附加计算误差的大小和方向;提出了改进和预防的建议。

The additional calculation error of measuring gas flow capacity through planimeter calculating av- erage value between differential pressure and static pressure with dual bellows differential pressure flow capacity table is discugsed in this paper. In various situations between differential pressure and static pressure, the size and direction of additional calculation error are also analysed, and improvement and prevention proposals are put forward.