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.

• 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。