A model has been created to investigate the uncertainty of a gas analyser operating according to the European Standard EN 14181, which ensures that the measurement uncertainty meets the requirements of legislation (Industrial Emissions Directive). This paper summarises the validation and initial results from the model, looking at the effect of varying the uncertainty of the reference method used to calibrate the analyser. The legislation allows the reference method an uncertainty of up to 20 %, but this will influence the quality of the calibration of the analyser. The results illustrate the problem and highlight that it becomes a significant issue when the reference method’s uncertainty is greater than 15 %, with the analyser failing its calibration almost half of the time due to poor reference performance at 20 % uncertainty. The model can be used to test future changes to legislation and can help operators to ensure that they would be able to meet such future measurement challenges.

中文翻译：

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根据欧盟工业排放指令为监测排放的分析仪建模欧洲质量保证程序

已经创建了一个模型来研究根据欧洲标准 EN 14181 操作的气体分析仪的不确定性，确保测量不确定性符合法规（工业排放指令）的要求。本文总结了模型的验证和初始结果，着眼于改变用于校准分析仪的参考方法的不确定度的影响。法规允许参考方法的不确定度高达 20%，但这会影响分析仪校准的质量。结果说明了这个问题，并强调当参考方法的不确定度大于 15% 时，它会成为一个重要问题，由于在 20% 不确定度下参考性能不佳，分析仪几乎有一半的时间无法校准。