Van Bi Inox điều khiển điện Valvole Hofmann ITALY
| I/P converter | to transform electric signal into pneumatic for the actuator |
| Pneumatic positioner | to transform pneumatic control signal into pneumatic signal for the actuator and checking its action |
| Electro-pneumatic positioner | to transform electric control signal into pneumatic signal for the actuator and checking its action |
| Digital positioner | to transform electric control signal into pneumatic signal for the actuator and checking its action (digital logic) |
