Bently Nevada 133434-01 3500/50 Tachometer Module

Description

The same rack can contain both internal barrier and standard I/O module types without compromising the separation between hazardous and safe area field wiring. The External Termination option is not available for I/O modules with internal barriers because hazardous area approvals do not allow the use of intrinsically safe wiring within a multi-cored cable assembly. Monitors that contain Triple Modular Redundant (TMR) rack options cannot use internal barrier I/O modules since connecting a transducer to multiple I/O module inputs will compromise the integrity of the IS system. A rack that contains any internal barrier module must have a 3500/04-01 IS Earthing Module to provide the Barrier Module IS earth connection.

Internal barrier I/O modules have an increased depth over that of standard barrier I/O modules. Consider the rack position with respect to adjacent modules to ensure that you can easily access the I/O modules during maintenance. Internal barrier I/O and IS Earthing modules can occupy any general-purpose rack position and can be adjacent to standard I/O module types

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