Requirements for the use of electro pneumatic converters

Requirements for the use of electro pneumatic converters

The electro pneumatic converters is a conversion instrument that can convert 4-20mA into a 20-100KPa pneumatic signal. It should be used according to the site conditions, that is, the spring compression coefficient of the pneumatic control valve connected to the electrical converter is 20-100KPa, If it is used beyond this range, the full-open and full-close actions of the regulating valve cannot be realized. This is different from the valve positioner, and the electrical converter must be carefully selected.

The air circuit pretreatment of the electrical converter, just like the audio amplifier has requirements for the power supply voltage, the electrical converter also has requirements for the pressure of the required instrument power wind energy, and the instrument wind pressure entering the electrical converter is required to be stable near 0.14Mpa, so The air inlet of the electrical converter instrument should be equipped with an air filter and pressure reducing device to make the instrument wind pressure entering the electrical converter constant and free of impurities.