PH值传感器调理电路，主电路不仅仅可以实现这一功能，稍加改动可以测量多种物质，原理在于分析被测物质阻抗谱并加以分析特性。-PH value sensor conditioning circuits, the main circuit not only can achieve this functionality, little change can be measured to a variety of substances, the principle is that the impedanc