Modeling, simulation and design of the intrinsic protection using safety barriers

In this paper the modeling, simulation and design of an intrinsic protection using safety barrier is presented. It is presented a short introduction regarding the intrinsic protection and the terminology used in explosive areas. If a device wants to communicate or acquire data from hazardous areas, it needs to be protected because if a fault appears there can lead to an explosion risk for the hazardous area. For this reason, there are designed dedicated safety barriers for every application. The mathematic model and the simulation results of a safety barrier using Zener diode, resistors and fuse are presented.