氧化锆分析仪测定氮气中氧含量的不确定度评价

Evaluation of Uncertainty in the Determination of Oxygen Content in Nitrogen by Zirconia Analyzer

摘要: 本文对用氧化锆浓差电池法测定氮气中氧含量过程中不确定度的来源进行了全面分析，找出了影响不确定度的因素，对不确定度进行了评估，给出了该分析项目的测量不确定度，如实反映了测量的置信度和准确度。本文结合实际工作，初步探讨了氧化锆氧分析仪测定氮气中氧含量的不确定度评价的方法，对此类计量器具的计量特性具有借鉴意义。

Abstract: In this paper, the sources of uncertainty in the determination of oxygen content in nitrogen by zirconia concentration cell method are comprehensively analyzed, the factors affecting the uncertainty are found, the uncertainty is evaluated, and the measurement uncertainty of the analysis item is given, which faithfully reflects the confidence and accuracy of the measurement. Based on practical work, this paper preliminarily discusses the uncertainty evaluation method of zirconia oxygen analyzer for determining oxygen content in nitrogen, which has reference significance for the measurement characteristics of such measuring instruments.