What is popular in thermometer thermometer?

Thermometer in popular to the bimetallic thermometer, because it can be used in many areas, whether it is a mechanical equipment or in petrochemical industry, it can be seen, today again to go over the bimetallic thermometer, learn about why so popular? Bimetallic thermometer is the use of two different expansion coefficient of metal element to measure the temperature of the thermometer. It is a kind of solid expansion thermometer. Its simple structure, strong, can partly replace mercury thermometer, used for gas, liquid and steam temperature measurement. The common structure of bimetallic thermometer has two kinds: one kind is axial structure, bimetallic thermometer dial plane and protecting tube into vertical connection; And there's a kind of radial structure, bimetallic thermometer dial protecting tube with a plane into horizontal connection. Can be observed according to the operation conditions of the installation and convenient to choose the axial or radial structures. It can also make it with upper and lower limit contact electric contact bimetallic thermometer, when the temperature reaches a given value, closes the electric contact, can send electrical signals, realize the temperature control or alarm function. In order to improve the sensitivity of the instrument, the industrial application of the bimetallic thermometer is made the bimetallic strip, spiral and a fixed at the bottom of the measuring tube, at the other end to free end, and inserted into the spiral of bimetallic strip center shaft welded together. When the measured temperature changes, the bimetallic strip the free end displacement, rotation center axis, the pointer indicates the measured temperature value. Along with society's changing, bimetallic thermometer has become more and more popular, because of the bimetallic thermometer is a way to solve the mercury pollution, it can be said that now can be seen everywhere in life, it's time to move the human perception changes in temperature, so it develops very fast, always walk at the forefront of science and technology, leader in the development of the thermometer, is one of the leading, thermometer industry now know why bimetallic thermometer is so popular?