Do you know what are the surface thermometer?

Surface thermometer, also belong to a kind of bimetallic thermometer, 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 surface thermometer can be divided into single spring surface thermometer, double magnet surface thermometer, single magnet surface thermometer. 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. Surface thermometer is widely used in heat treatment, industry, petroleum, chemical industry, etc, can accurate and fast measurement of the temperature of the object to be tested, installation is very convenient.