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一、概述小温差的精密测量,在科学实验、工业生产和计量技术中都有重要意义。为满足小温差的精密测量,特别是温度计量检定用的标准油槽、水槽、低温槽以及实验室用液体槽的温场均匀性测试的需要,我们研制了数字式小温差测量仪。该仪器的主要技术性能是:(1)使用温度范围:-100℃～300℃;(2)温差最大测量范围:0～±1℃;(3)温差测量精度:±0.005℃;(4)温度测量灵敏度:0.001℃;
First, an overview of the small temperature difference measurement, scientific experiments, industrial production and measurement techniques are of great significance. In order to meet the requirement of precise measurement of small temperature difference, especially for the temperature field uniformity test of standard oil tank, water tank, low temperature tank and laboratory liquid tank for temperature measurement, we have developed a digital small temperature difference meter. The main technical performance of the instrument is: (1) the use of temperature range: -100 ℃ ~ 300 ℃; (2) the maximum temperature measurement range: 0 ~ ± 1 ℃; (3) temperature measurement accuracy: ± 0.005 ℃; Temperature measurement sensitivity: 0.001 ℃;