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一、引言根据1968年国际实用温标(IPTS-68)定义:金凝固点(1064.43℃)以上的温标是以金凝固点黑体的单色辐射亮度为基准,由普朗克热辐射公式导出。为复现这一段温标,须运用各种设备并经过复杂的程序进行操作。实用上,常选用按IPTS-68定义检定过的光学高温计用的标准钨带灯作为标准。本装置试制的目的正是为了提高对二只标准钨带灯的单色辐射亮度进行比较的精度,与过去用于
I. INTRODUCTION According to the International Practical Temperature Scale (IPTS-68) in 1968, the temperature scale above the freezing point of gold (1064.43 ℃) is derived from the Planck heat radiation formula based on the monochromatic radiation brightness of black solidifying point of gold. To reproduce this section of temperature scale, a variety of equipment must be used and complicated procedures are followed. In practice, the standard tungsten lamp used for the optical pyrometer acc. To IPTS-68 definition is often selected as the standard. The purpose of trial production of this device is precisely to improve the accuracy of monochromatic radiation brightness of two standard tungsten lamps compared with the past for