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目前广泛地应用节流孔板式流量计,这种流量计在工况比较稳定的情况下具有一定的精度。但在工况变化特别是压力波动比较大的场合误差却很大。因此需要考虑采用压力补偿以提高测量精度。如果采用DDZ-Ⅱ型电动单元组合仪表,则须分别增加一只压力变送器、乘除器、给定器。这样不但费用增加,而且存在调试维修复杂、精度低等缺点。为克服上述缺点并省去一只乘除器和给定器,我们对DXS-
Currently widely used orifice plate flowmeter, this flowmeter in the case of relatively stable conditions with a certain accuracy. However, changes in conditions, especially in the case of large pressure fluctuations, the error is great. Therefore need to consider the use of pressure compensation to improve the measurement accuracy. If using DDZ-Ⅱ-type electric unit combination meter, respectively, to increase a pressure transmitter, multiplier, setter. This will not only increase the cost, but also the existence of debugging and maintenance complex, low accuracy and other shortcomings. To overcome these shortcomings and omit a multiplier and setter, we DXS-