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一、引言依据JJG59-2007《活塞式压力计检定规程》,需对活塞压力计各个参数进行检定,比如活塞密封性、活塞转动延续时间、活塞下降速度、活塞有效面积等,其中活塞有效面积是活塞压力计检定中重要的参数,直接决定了压力计量值传递的准确性。规程中有效面积的检定方法分为直接平衡法和起始平衡法。直接平衡法是最基本的活塞有效面积测量方法,考虑了影响测量结果的各种因素,理论上是比较
I. INTRODUCTION According to JJG59-2007 “Piston Pressure Gauge Verification Regulation”, all parameters of piston pressure gauge need to be checked, such as piston sealing, piston rotation duration, piston descending speed and effective piston area, etc. The effective area of piston is Piston pressure gauge test important parameters directly determine the accuracy of the pressure measurement value transmission. Procedures valid area test methods are divided into direct balance method and the initial balance method. Direct balance method is the most basic piston effective area measurement method, taking into account the various factors that affect the measurement results, in theory, is to compare