Allen-Bradley Bulletin 937 intrinsic safety modules provide a signal interface bridge between hazardous locations and the control system by connecting intrinsically safe rated equipment—such as transmitters, solenoids and proximity sensors—with controls. Integrated diagnostics help simplify maintenance, and users can quickly switch out modules during ongoing operations. The modules can be installed in systems rated up to SIL 3 for planning and documentation. Users can configure the modules using DIP switches or Field Device Tool software and mount them horizontally or vertically with no reduction in operation ratings. A power rail system helps reduce wiring and enables collective error messaging for troubleshooting and installation.
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