What kind of pipeline thermometer are there?

Pipe with a thermometer, because of its special use environment, relatively high to the requirement of installation, install the teeth are not very suitable, so we have a dedicated pipeline thermometer, its working principle is based on the principle of solid heat expansion, the two pieces of expansion coefficient difference is very big pieces of metal welded together. When the temperature changes, the difference is very big, caused the different expansion coefficient of expansion and contraction, the deformation of sheet metal bending. According to different deformation and produce different momentum, momentum to drive the connection shaft and the other end of the indicating needle, indicate the temperature. So what kind of pipe thermometer are there? Let's learn about the below. Pipeline thermometer respectively are: the single spring pipe thermometer: surface is 63 mm in diameter, temperature range is - can be measured 40 - 400C. Double magnet pipeline thermometer: surface is 50 mm diameter, temperature range is - can be measured 40 - 400C. Single magnet pipeline thermometer: surface is 63 mm in diameter, temperature range is - can be measured 40 - 400C