提高酸度计测量精度新方法的研究

New method to raise the measuring precision of pH meter

从降低酸度计探头部分的系统误差、提高其测量精度的研究出发,提出了一种解决酸度计测量精度新的设计方法。而且这一新方法从理论上讲也适用于解决pH计之类的高内阻直流电压信号源的测量精度这一难题。为此,定义了一种全新的实用传感器电路类型———电荷耦合传感电路(3C电路),并用自行设计的电路证实了该方法的可行性和实用性。该新方法为大量pH计低成本地升级换代提供了一个新的途径,具有很大的经济和实用价值。

This paper introduces a new method to raise the measuring precision of the pH meter which also is applicable to the DCV source with high resistance like the pH meter in theory. The feasibility and practibility of the method are tested by designing a new kind of charge-coupled circuit. The method has been proved economic and practical.