Electric Actuating Mechanism Pump-The electric

 actuating mechanism is connected to the 

amount-adjusting screw rod of the metering pump, 

changes the stroke length through receiving the 

input 4-20mA signal and changing the rotation turns, 

outputs a group of 4-20mA feedback signals, forms

 closed-loop control, and finally adjusts the 

output flow of metering pump to realize long-distance 

or automatic flow adjustment and automation. The travel 

distance percentage and running state can be displayed on the LCD display screen.