A Turbine Fuel Regulator’s (TFR) primary function is to provide an output signal for modulating fuel supply in response to the load demand placed on a gas turbine. Secondary control and monitoring functions include actuation of variable geometry end devices such as inlet guide vanes, bleed valves and stator vanes, as well as protection functions such as stall, over speed and temperature monitoring. The control systems supplied on new gas turbines are most often developed and supplied by the Original Equipment Manufacturers (OEMs) for their specific gas turbines. As the machines age beyond the obsolescence of the OEM control systems, end users seek to upgrade and modernize these control systems and often they seek alternatives or 3rd party control system suppliers.