Large handle thermocouple adopts φ3~φ8 armored thermocouple. Armored components are directly connected to the measured medium, with quick heat response and straight grip large handle, Its large handle is soft connected with lead wire , Wire connected to a portable digital display instrument interface flat yellow plug,. The measurement length can be adjusted according to users’ need. It can be directly used in the temperature measurement of solution and solid substance of 0~1200℃.