Operated with cam characterized air pressure control, Type-2000 Pneumatic and Electro-Pneumatic Valve Positioners provide stable and accurate control of rotary and linear valves. Base pneumatic version operates on 3–15 psig instrument signal supplied to positioner; mechanical feedback via cam is linked to spool valve that loads actuators for positioning. Electro-Pneumatic Positioner receives 4–20 mA input signal, and integral I/P transducer converts input signal to pneumatic output.
This story is related to the following:Valve Positioners