Pneumatic actuator local control cabinet bellows baffle control device. It is an important part of the safe and economical combustion of boilers in thermal power plants. Depending on the type of fuel (gas, oil, coal) and the number of burners, the device accepts the DCS electrical signal and converts it to a gas signal to the field actuator to control the opening of the damper or to oscillate the burner. The angle of up and down swings to achieve the purpose of economic combustion. It is an intermediate signal conversion device between the control room and the on-site pneumatic actuator.

Pneumatic door control box, switch type: switch signal, automatic opening, automatic closing
Pneumatic adjustment door control box, adjustment type:

• Working environment temperature: -25-55oC;
• Working power: 220V, AC, 50HZ;
• Gas source requirements: air source pressure is 0.35-0.7MPa dry air, does not contain obvious oil and other liquids and corrosive gases, allowing dust content in the gas source should be less than 0.1g / m3 and particle radius is not more than 60um;
• Input signal: 4-20mA (impedance <300Ω) or switching signal;
• Output signal: 0.1-0.02MPa;
• Feedback signal: 4-20mA;