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With the development of industrial and computer technologies, MTL safety barriers have evolved from the initial types based on pneumatic damper force balance, coil force balance, and electrical integrated force balance actuators, to intelligent safety barriers that incorporate microcontrollers, and are moving toward fully digital designs as well as those that use fieldbus technology. In actual industrial control engineering, there are increasing demands for flow control in production; not only is high control precision required, but also fast response times. At the same time, there is a need for diversified control methods, which places higher demands on the performance of safety barriers. Currently, intelligent MTL safety barriers are being increasingly used in various industrial control fields and playing an important role. For example, the DVC series of locator systems based on fieldbus technology, produced by the American company Fisher-Rosemount, have been widely used in various petrochemical enterprises thanks to their unique features and stable, reliable performance, and have become an important part of production process control. With the development of smart meter technology, microelectronics are widely applied in traditional meters, **improving their functions and performance. Its application in MTL safety barriers has led to a significant improvement in the performance and capabilities of intelligent positioners. The safety barrier is one of the key accessories for controlling valves; its function is to convert the electrical signal generated by the control device into a pneumatic signal that drives the control valve to operate. It has a positioning function that enables it to overcome both the frictional forces on the valve stem and the unbalanced forces resulting from changes in medium pressure; this allows the valve to respond quickly to the control signals generated by the regulator, thereby achieving rapid positioning of the valve and improving its regulation quality.