What are the "eyes" and "brains" of petrochemical production equipment?

There are many automatic control facilities in petrochemical enterprises, which are the "eyes" and "brains" of production devices. These eyes and brains, which never rest for 24 hours, always help the production workers to look after the production line and ensure the smooth operation of the equipment.

In the continuous production equipment of petrochemical enterprises, you can often see various instruments, including flow measuring instruments, temperature measuring instruments, pressure measuring instruments and so on. The use of rice has a long history, according to Han Feizi? It is recorded in Youdu that China had a guiding device made of natural magnets in the Warring States Period, which is called "Sina", which is the earliest record of human using the device.

Production process automation is to equip some automatic instruments on production equipment to detect, display and record important process parameters in the production process. These instruments are the eyes of production equipment. Various instruments transmit signals to the computer in the central control room through cables, and the computer is the "brain" of the production device. On the one hand, the computer displays the collected instrument signals on the screen to provide operating basis for operators, on the other hand, it adjusts the production process parameters according to the preset program to keep the parameters within the normal range of process requirements.