一、前言本方法系在谐振回路上,采用已知介电系数的液体,标定固定电极间距的二电极系统的电极常数,以测量液体介电性能。它适用的频率上限为1MHz或更高些。其特点是操作简便,电极结构简单,有足够的测量精度,因而容易在工业上推广。二、电极装置由电极和待测液体组成的测量电容器,如图1所示。上下两电极均由黄铜制成。上电极的直径比下电极的内径适当地小些,以便在操作时上电极的位置稍微偏心不至引起测量误差。上电极借三小颗粒同厚度的石英玻璃或高频瓷支撑于下电极上面。上电极的直径和电极 I. Introduction This method is based on the resonant tank, the use of known dielectric constant of the liquid, fixed electrode spacing of the two electrode system electrode constant to measure the liquid dielectric properties. It applies to frequencies up to 1MHz or higher. Its characteristics are easy to operate, the electrode structure is simple, there is sufficient measurement accuracy, which is easy to promote in the industry. Second, the electrode device from the electrode and the liquid to be measured measuring capacitor, shown in Figure 1. The upper and lower electrodes are made of brass. The diameter of the upper electrode is suitably smaller than the inner diameter of the lower electrode so that the position of the upper electrode is slightly eccentric in operation without causing measurement errors. Upper electrode by three small particles with the same thickness of quartz glass or high-frequency ceramic support on the lower electrode. Upper electrode diameter and electrode