The Role of Electro Pneumatic Transducer

The Role of Electro Pneumatic Transducer

Pneumatic control valve is a kind of pneumatic instrument, this instrument receives pneumatic signal to act, and is not in touch with the electrical signal in our industrial control. Therefore, the control of the industrial field needs a conversion instrument to convert the electrical signal from the control room into regulation. The gas signal that the valve can recognize. This kind of conversion instrument is installed on the on-site pneumatic control valve, receives the electrical signal from the control room and then converts it into the corresponding standard pneumatic signal, and enters the control valve as the pneumatic energy source that the control valve can operate.

This kind of conversion instrument installed on the regulating valve, the most familiar to industrial control personnel is the valve positioner. The valve positioner is a conversion instrument that can convert the electrical signal from the control room into the pneumatic energy required by the pneumatic control valve. According to the different performance, it can be divided into mechanical, electrical, intelligent and other types. It is widely used.

In addition to the valve positioner, there is also a signal conversion instrument used in the industrial field, that is, the electrical converter. The electrical converter is a kind of electrical conversion instrument equipment with simple structure and accurate conversion. It has been widely used in industrial control in the last century. Only in recent years has it been gradually replaced by valve positioners, but many old devices are still in operation. It still exists in China.