Abstract
The article is devoted to the assessment the error in determining the mass of a sample bulk materials when using the values of their bulk density. Precisely the accuracy of measurement results is necessary in many fields of activity to ensure the efficiency and safety of technological processes, as well as improving product quality. The relevance of this work is associated with the assessment of the inevitable deviations of the bulk density the same material in a given volume as a result of an uncontrolled fractional composition of a sample of bulk material. As a consequence of these deviations, an error arises in determining the mass of a sample of a given volume, even if this volume is an uniquely determined quantity. The paper presents the results of studies of the influence of the fractional composition of bulk materials on the determination of their mass in the indirect measurement method. A significant effect of the fractional composition of bulk materials on the error of the indirect method for determining the mass of the sample was revealed. It is shown, that there is a need for fractional control of the composition of bulk materials in the development of control operations of technological processes, as well as restrictions on the use of bulk density with increased requirements for the accuracy of determining the mass of a sample.
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