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Reference Manual
IP2048/RM, Rev AA
Section 3: Installation
February 2015
If the transmitter is being supplied through a safety barrier, ensure the type chosen will pass
HART information.
After the load resistor is installed, a Field Communicator can be connected across the load
resistor. It is the responsibility of the installer to ensure that any Field Communicator used in the
hazardous area is suitably certified.
Note
Make sure that the instruments in the loop are installed according to intrinsically-safe
field wiring practices and control drawings, when applicable.
3.4.6 Lightning / Surge protection and other loop devices
If the area is prone to lightning strikes or voltage surges, a suppressor device may be installed
between the transmitter and the control unit.
If an additional loop-powered device or separately powered device is included in the two-wire
loop, ensure the transmitter receives a minimum voltage of
12 Vdc. (See “Dimension drawings” on page 68).