CAJ | 학술논문

不确定度是一个合理表征测量结果的分散性参数，测量结果的可用性在很大程度上取决于其不确定度的大小。介绍了pH酸度计的工作原理，并依据JJG 119-2005《实验室pH(酸度)计检定规程》和JJF 1059-1999《测量不确定度评定与表示》，对实验室pH(酸度)计测量不确定度进行了评定。
불학정도시일개합리표정측량결과적분산성삼수，측량결과적가용성재흔대정도상취결우기불학정도적대소。개소료pH산도계적공작원리，병의거JJG 119-2005《실험실pH(산도)계검정규정》화JJF 1059-1999《측량불학정도평정여표시》，대실험실pH(산도)계측량불학정도진행료평정。
Uncertainty is a dispersion parameter for reasonable characterization of measurement results, the usability of measurement results largely depends on level of the uncertainty .In this paper, the working principle of pH meter was introduced, the measurement uncertainty of pH meter was evaluated based on JJG 119-2005 laboratory pH meter verification regulation and JJF 1059-1999 evaluation and expression of measurement uncertainty.