Emerson Rosemount 375, User Manual, Page: 13 / 140

Learning the Basics 2-3
• An Expansion Module, labeled Expansion Module, is
a removable memory card that snaps into the
Expansion Port.
• Only the Expansion Module or Expansion Port Plug
should be inserted into the Expansion Port. System
Cards/Secure Digital cards or other objects must not
be put into the Expansion Port. Failure to comply will
void the IS approval and the warranty.
• The System Card used in the System Port must be
supplied by the 375 Field Communicator
manufacturer. Failure to comply will void the IS
approval and the warranty.
Working in an
Intrinsically
Safe (IS) Area
• An IS-approved 375 Field Communicator can be used
in Zone 0 (FM and CSA only), Zone 1, or Zone 2,
Division 1 and Division 2 locations (KL option only).
• An IS-approved 375 Field Communicator may be
connected to loops or segments that are attached to
equipment located in Zone 0, Zone 1, Zone 2, Zone
20, Zone 21, Zone 22, Division 1 and Division 2 (KL
option only).
• The battery can be installed or removed in an
Intrinsically Safe area; however, it cannot be charged.
• The Expansion Module can be removed or installed in
a hazardous area.
• The Expansion Module can be installed in an
Intrinsically Safe area while the 375 Field
Communicator is still running.