The petroleum chemical industry use thermometer?

The petroleum chemical industry use thermometer? Instrument answer: petroleum chemical industry is using a bimetallic thermometer. Bimetallic thermometer is a kind of measurement in the field of low temperature test instrument. Bimetallic thermometer can be directly measured in the process of various production - 80 ℃ ~ + 500 ℃ within the scope of liquid, steam and gas medium temperature. The bimetallic thermometer used in petroleum chemical industry; In the process of refining chemical industry, the temperature can reflect the extent of the production process, but also to control the production process. Reliable measurement and control temperature accurately, it is of great significance in the oil refining chemical production. Bimetallic thermometer is a round shape into threaded heat bimetallic strip as thermal devices, and put it in a protective sleeve tube, one end is fixed, known as the fixed end, the other end of the connection on a thin shaft, called the free end. Spool at the free end is equipped with a pointer. When the temperature changes, the resulting thermal devices the free end of the rotation, drive the thin axis from the Angle of the pointer changes, corresponding temperature indicator on the dial.