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贝克曼温度计的现行检定规程明确要求须按检定时的浸没深度使用。但在煤的发热量测定中的实际浸没深度与规程的规定有很大差别。文中提出了如何利用已有检定结果来得到正确的温差计算公式以及发热量测定值。并推算了忽视浸没深度的差别所造成发热量测定值的误差。
Beckman thermometers existing test procedures explicitly required to be used according to the depth of immersion test. However, the actual immersion depth in the determination of the calorific value of coal is quite different from the rules of procedure. The paper presents how to use the existing test results to get the correct temperature difference calculation formula and calorific values. And calculate the difference between the neglected immersion calorific value caused by the measurement error.