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我们根据多年来检定和计算二、三等活塞式压力计活塞有效面积的实践,认为规程中计算活塞有效面积的公式在实际应用中比较繁杂,完全可以进行简化。现介绍计算方法并将简化公式推导如下:规程规定活塞有效面积 S_1的计算公式:S_1=S_0(1)
Based on the practice of checking and calculating the piston effective area of piston pressure gauges such as second and third class for many years, we think that the formula for calculating the effective area of piston in the procedure is more complicated in practical application and can be simplified completely. The calculation method is introduced and the simplified formula is deduced as follows: The rules stipulate the formula of piston effective area S_1: S_1 = S_0 (1)