目前在低温范围内,特别是液氦温度以下,一般常用的热电偶由于温度的变化而引起的热电势的变化常常是很小的,致使热电偶测量法的应用受到一定限制。为了满足我国低温工程的需要,重庆仪表材料研究所与有关单位协作,研制了金铁—镍铬低温热电偶,并建立了 Currently in the low temperature range, especially below the liquid helium temperature, commonly used thermocouple changes due to temperature changes caused by the thermoelectric power is often very small, resulting in the application of thermocouple measurement is subject to certain restrictions. In order to meet the needs of low-temperature engineering in China, Chongqing Institute of Instrumentation Materials in collaboration with the relevant units, developed a gold-iron - nickel-chromium low temperature thermocouple, and established