The error in measuring heat capacity owing to heat exchange of the gas during the stage of determining the thermal equivalent of the empty calorimeter is discussed. A correct formula is obtained for estimating the correction to the measured heat capacity of a test sample and the error arising from neglect of the correction for the heat-exchanger gas is evaluated numerically. Numerical estimates of the error are obtained for the KA-S4 standard calorimeter contained in the State Primary Standard GET 60-2019 for the unit of specific heat in solids.
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Translated from Metrologiya, No. 3, pp. 43–52, July–September, 2020.
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Kompan, T.A., Vlasova, V.V. & Kulagin, V.I. Evaluating the Effect of Heat-Exchanger Gas in a Calorimeter on the Error in Measurement of Specific Heat. Meas Tech 63, 747–750 (2020). https://doi.org/10.1007/s11018-021-01849-w
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DOI: https://doi.org/10.1007/s11018-021-01849-w