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1.概述节流装置的设计是以被测介质的某个常用压力和温度为依据的,但实际上工作压力和温度往往和设计的压力和温度不相符合,这就比其他仪表误差多了一种误差。压力和温度偏离设计值时的误差当然也可以进行修正,但用公式修正随时变化的压力和温度是很不方便和难以实用的。内动进行压力和温度补偿是必要的。现在就有几种自动补偿法,但都比较复杂,在原有的流量仪表上要添置不少的仪表,这对于技术力量薄弱的小厂有一定的难度。
1. General The throttling device design is based on a commonly used pressure and temperature of the measured medium, but in fact the working pressure and temperature are often not consistent with the design pressure and temperature, which is more than other instrumentation errors An error. Of course, the pressure and temperature deviations from the design values can also be corrected. However, it is inconvenient and difficult to correct the pressure and the temperature with the formula at any time. Internal pressure and temperature compensation is necessary. Now there are several automatic compensation method, but are more complicated, in the original flow meter to purchase a lot of instruments, which for the technical strength of a small factory has a certain degree of difficulty.