FC series signal conditioners include potentiometer and bipolar signal conditioners to solve various interface problems between PLCs and analog input devices. The FC-P3 is a 24 Vac/Vdc potentiometer input to isolated analog output signal conditioner designed to convert resistive signals from a 10 kilohm potentiometer to a 4-20 mA signal. Additional FC series signal conditioners include bipolar input-to-unipolar output and unipolar input-to-bipolar output models. Models are field-configurable and useful to eliminate ground loops and interfacing sensors to PLC analog input modules.