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测温热电偶,工作在高温(1000～1300℃)、中温(750～950℃)浴盐介质时,它要承受高温、氧化、腐蚀及渗透的连续作用。中温下,常规使用EU—2热电偶,配套以不锈钢保护管,由于寿命不长,材料的消耗就比较大。高温时,迄今还未解决适应此介质条件,进行长期连续工作的保护管材料。另外,原来适应该测温要求的LB—3热电偶,系稀有金属铂、铑制品,价格昂贵,供应困难。因此,不少工厂至今还在采用误差因素诸多的间接测温方法,而不能很好地控制和保证生产质
Thermocouple temperature, working in the high temperature (1000 ~ 1300 ℃), medium temperature (750 ~ 950 ℃) bath salts medium, it has to withstand the continuous effects of high temperature, oxidation, corrosion and infiltration. In the temperature, the conventional use of EU-2 thermocouple, supporting the stainless steel protection tube, due to the short life expectancy, the material consumption is relatively large. At high temperatures, so far to adapt to the conditions of this medium, long-term continuous protection of the tube material. In addition, the original LB-3 thermocouple to adapt to the temperature measurement, Department of rare metals platinum, rhodium products, expensive, difficult to supply. Therefore, many factories are still using many indirect error temperature measurement methods, but not well control and ensure the quality of production