自記2色色温度計

抄録

Several kinds of pyrometers which utilize the theory of thermal radiation are used for measuring high temperatures, however they have such a defect that they do not indicate true temperatures. The two color pyrometer has a useful characteristic of indicating comparatively true temperatures in the wide range of temperature. Described in this paper are the principle and structure of this automatic two color pyrometer, particularly the selection of color filters and new measuring circuit.