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近年来数字温度测量及温度自动控制设备大量涌现,它在工农业生产中得到广泛应用.目前在生产中应用的数字温度计的分辨率最高为0.1℃.在科学研究领域内,尤其在物理及化学领域中,如测量某实验中温度的微小变化,是十分重要的.本文介绍的数字温度计精度更高,其主要性能是:分辨率为0.01℃或0.1℃;测温范围是-55℃～+150℃;测温误差不大于0.5℃;有连续测温及单次测温;有数据记忆功能.整机电原理图见图1.下面介绍工作原理.
In recent years, a large number of digital temperature measurement and temperature control equipment, it is widely used in industrial and agricultural production.Currently used in production of digital thermometer resolution up to 0.1 ℃ in the field of scientific research, especially in physics and chemistry In the field, it is very important to measure the small change of temperature in an experiment. The digital thermometer introduced in this paper has higher accuracy and its main performances are as follows: the resolution is 0.01 ℃ or 0.1 ℃; the temperature measurement range is -55 ℃ ~ 150 ℃; Temperature error is not greater than 0.5 ℃; Continuous temperature measurement and single temperature measurement; Data memory function. 整机 schematic shown in Figure 1. The following describes the working principle.