How do you know the metal surface thermometer classification?

Metal surface thermometer, just as its name implies, is to measure the surface temperature, it is a much used for measuring temperature of pipe bimetallic thermometer, so might as well be called the pipe 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. According to the installation in a different way, the metal surface can be divided into single spring surface thermometer thermometer, double magnet surface thermometer, single magnet surface thermometer. The difference between these three surface thermometer mainly surface diameter, material and installation. The surface of the single spring surface thermometer diameter is 63 mm, fixed to the pipes by the stainless steel spring behind the. Double magnet on the surface of the surface diameter of the thermometer is 50 mm, economy, behind contains two small magnets, magnet adsorption by on a pipe or mold. Single thermometer on the surface of the magnet surface diameter is 63 mm, behind contains a big magnet, magnet adsorption on a pipe or mold. So, everybody in the surface temperature of choose and buy time, according to the installation environment and temperature measurement range can be selected.