RTD Converter FB5204B3, Occupied slots, Sensor Accessories and Others, 4-channel, Inputs Ex ia, Installation in suitable enclosures in Zone 1, Module can be exchanged under voltage (hot swap), Converter for 2-, 3- and 4-wire RTDs (Pt100 ... Pt1000), slide wire sensors etc., Simulation mode for service operations (forcing), Line fault detection (LFD)