Tungsten alloy tube for thermocouple protection has high thermal conductivity, small thermal expansion coefficient, good high temperature resistance, good corrosion resistance, high thermal strength, good thermal shock resistance and a certain resistance to temperature changes of the comprehensive performance. It has good oxidation resistance at high temperature and can be used in the upper limit of thermocouple temperature measurement without deterioration and deformation.
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Thermocouple has become the most widely used temperature sensor in the fields of industrial production and scientific research because of its advantages of stable performance, accurate and reliable, simple structure, convenient use, wide range of temperature measurement and remote signal transmission. The tube for thermocouple protection plays an important role in its temperature measurement. Its material properties affect the long-term stability and service life of thermocouples and other performance indicators. Especially the thermocouple working at high temperature, the material has higher requirements.
