国际标度委员会决定,自1969年1月1日起采用新温标(1968年国际实用温标)。我国现行的温标仍然是1948年国际实用温标,是在四十年代末期建立起来六十年代初期修正后的温标。通过各级计量检定部门,从基准传递到一、二等标准温度计以及一般工作用仪表和工业自动化用仪表,建立了温度计量的检定传递系统,以保证仪表厂生产的测温仪表和工业中使用的测温仪表准确一致。因此,我国无论使用或生产仪表的示值,都直接或间接地由温标所决定。新温标是建立在热力学第二定律基础上 International Scale Commission decided that since January 1, 1969 the new temperature scale (1968 international practical temperature scale). The current temperature scale in China is still an international practical temperature scale in 1948, which was a revised temperature scale set up in the early 1960s in the late 1940s. Through the metrological verification departments at all levels, passed from the benchmark to the first and second standard thermometers and general working instruments and industrial automation instruments, the establishment of a temperature measurement verification transfer system to ensure that the instrument factory production of thermometers and industrial use Accurate temperature measurement instrument. Therefore, regardless of the value of our use or production instruments, are directly or indirectly determined by the temperature scale. New temperature scale is based on the second law of thermodynamics