直到目前,精确测量pH值还是使用由对氢离子敏感的薄玻璃球电极、参比电极、高输入阻抗电压表(有时还有温度传感器)组成的系统进行的。事实上,虽然为满足不同应用要求开发了一系列pH电极用玻璃,并配用微处理机使仪器日趋完善。但是,自从 Until now, accurate pH measurements were made using a system consisting of a thin glass ball electrode sensitive to hydrogen ions, a reference electrode, a high input impedance voltmeter (and sometimes a temperature sensor). In fact, though a series of glasses for pH electrodes have been developed to meet different application requirements, microprocessors have been used to perfect the instrument. However, since