Qualimetric assessment of metrological characteristics of household gas meters during periodic verification

IF 0.1 Q4 INSTRUMENTS & INSTRUMENTATION

Ukrainian Metrological Journal Pub Date : 2021-07-02 DOI:10.24027/2306-7039.2.2021.236086

Орест Євгенович Середюк, Олександр Криницький, Василь Романів, Деніс Середюк, Анна Григорівна Винничук

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Abstract

Informative parameters for statistical estimation of operational error of SAMGAS, METRIX, PREMAGAS household gas meters (HGM) are formulated. These are the values of the measured volume during the verification period of operation and the experimentally determined error of the meter during operation at three normalized flow rates: minimum, maximum and 20% of the maximum. Six ranges of variation of the HGM error at the minimum flow rate were selected to form statistical samples of meters. According to the proposed algorithm, the change in the weighted average HGM error for three normalized flow rates from the measured volume is quantified, taking into account the number of HGMs and their error ranges. It is proposed to apply the concept of generalized weighted average error of HGM, which reflects the operational error of HGMs during their operation in the entire range of consumption when measuring gas volumes up to 60 thousand cubic meters.

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定期检定时家用燃气表计量特性的质量评定

制定了SAMGAS、METRIX、PREMAGAS家用燃气表（HGM）运行误差统计估计的信息性参数。这些是在运行验证期间测量的体积值，以及在三种标准化流速（最小、最大和最大的20%）下运行期间仪表的实验确定的误差。选择最小流速下HGM误差的六个变化范围来形成流量计的统计样本。根据所提出的算法，在考虑HGM的数量及其误差范围的情况下，量化了来自测量体积的三个归一化流速的加权平均HGM误差的变化。建议应用HGM广义加权平均误差的概念，该概念反映了HGM在测量高达6万立方米的天然气体积时在整个消耗范围内运行时的操作误差。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Ukrainian Metrological Journal INSTRUMENTS & INSTRUMENTATION-

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