一、前言钟罩式气体流量标准装置如图1所示。当钟罩下降时,由于它浸没于密封液中的体积增加,它所受的浮力也增加。为了使钟罩内的压力保持不变,就要对这种增加的浮力进行补偿,以便精密校验流量计。六十年代初,我国独创了一种新的补偿方法,即象限补偿法。这种方法,补偿机构简单,制造方便,补偿精度 First, the foreword bell-type gas flow standard device shown in Figure 1. As the bellows is lowered, its buoyancy also increases due to the volume it is immersed in the sealing liquid. In order to keep the pressure inside the bell jar constant, this increased buoyancy must be compensated in order to verify the flowmeter in a precise manner. In the early 1960s, our country created a new compensation method, quadrant compensation. This method, the compensation mechanism is simple, easy to manufacture, compensation accuracy