176449-01 Bently Nevada Proximitor Seismic Monitor

Description

The internal barrier I/O modules add approximately 50 mm (2 in) to the depth of the rack to provide the 50 mm (2 in) physical separation between safe and hazardous area field wiring. Hence, a standard rack with internal barrier modules will not fit into a 400 mm cabinet. The bulkhead rack version is available for installations that require this cabinet type. A standard rack with internal barrier modules will fit comfortably in a 600 mm cabinet and the 3500/06 Weatherproof Housing.

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.

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