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  5. Measurements uncertainty evaluation at determination ash in solid mineral fuel

Measurements uncertainty evaluation at determination ash in solid mineral fuel

I.P. Zakharov, E.N. Shevchenko
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The article discusses the relevance of the determination of total sulfur mass fraction of solid fuel, an analytical determina- tion of ash content on analytical, working and dry state samples of fuel are analyzed, the circuit of performance measurement is resulted, the modeling equation is made, a budget of uncertainty is drawing up, expressions for calculation of the standard, combined and expanded uncertainty of measurement are received, recommendations on record of result of measurement are resulted.
Keywords: Тotal sulfur, uncertainty of measurements, factor of scope, uncertainty budget