The platinum resistance thermometer is a standard interpolating instrument of the international practical temperature scale of 1968 ( IPTS-68), But the formula for resistance-temperature stipulated by IPTS-68 is very complex and has given rise to problems in calculation and measurement of low temperature. 铂电阻温度计是1968年国际实用温标(IPTS-68)的标准插补仪器。但IPTS-68规定的电阻-温度公式十分复杂,在低温计算及精密自动测量上带来了问题。
Calculation of standard platinum resistance thermometer in the international temperature scale of 1990 ITS-90标准铂电阻温度计的计算问题
Considering the international developing trend of casting industry and the domestic market demand of mold casting pattern materials ( mold casting waxes), this paper researched low, middle and high temperature series mold casting pattern materials, developed small and middle scale technology to produce them. 应对国内外熔模精密铸造业的发展趋势和国内对熔模铸造模料(熔模铸造蜡)的市场需求,本文研究开发了低、中、高温系列精密铸造模料及其生产工艺。
On the Realization of International Practical Temperature Scale of 1968 from 0 ℃ to 630 ℃ 关于复现0&630℃范围内1968国际实用温标的研究
In present paper the apparatus and techniques used in NIM for realization of International Practical Temperature Scale of 1968 from 0 ℃ to 630 ℃ are described. 本文报导中国计量科学研究院在建立0&630℃范围内国际实用温标时所使用的仪器和技术。
The triple point of water ( TPW) is not only the sole reference point for Kelvin Thermodynamic Temperature Scale ( KTTS), but also a fundamental defining fixed point of International Temperature Scale of 1990 ( ITS-90). 水三相点是开尔文热力学温度的唯一基准点,也是ITS90国际温标重要的定义固定点。
Finally, some problems arising from the realization of the ITS-90 and a future trend of international temperature scale are discussed in the present paper. 最后本文讨论了ITS-90实施后存在的一些问题及温标发展的国际动态。
It is of great significance in the thermodynamic temperature measurement, the realization of the international temperature scale, and the actual temperature measurement. 它在热力学温度测量、国际温标复现以及实际温度测量中,具有十分重要的意义。