Armored thermocouple temperature sensors are widely used in various production processes to directly measure the temperature of liquid, steam and gas media and solid surfaces within the range of -40 to 1600°C. Thermocouple sensors are mainly composed of junction boxes, terminal blocks, protective tubes, insulating sleeves, and hot electrodes. The temperature sensor adopts a fully welded structure and a high-strength stainless steel shell. It is widely used in automated temperature measurement and control systems.