The Rotork GPSA electric, explosion-proof, process control actuator is now available in linear and rotary actions and features an integral process controller, nonintrusive set-up and calibration, local controls, manual override, continuous modulation, diagnostics, programmable output characterization, and input signal dampening. The GPSA actuator, from Rotork Process Controls, is provided in one integral package. A two-line, 16-character VFD display and nonintrusive rotary switches comprise the actuator’s HMI, providing user access for viewing and modifying parameters, as well as data feedback. It is mountable in any position and can operate on single-phase 120/240 voltage and 24 VDC. The actuator is suitable for use in chemical dosing and other process control applications where continuous modulation and tight accuracy are required.