
HART Communicator
October 2016
Reference Manual
00809-0100-4808, Rev DA
60
HART Communicator
C.2
Safety messages
Procedures and instructions in this section may require special precautions to ensure the safety of the
personnel performing the operations. Information that raises potential safety issues is indicated by a
warning symbol ( ). Refer to the following safety messages before performing an operation preceded
by this symbol.
Explosions can result in death or serious injury.
Do not remove the transmitter covers in explosive environments when the circuit is alive.
Before connecting a communicator in an explosive atmosphere, make sure the instruments in the
loop are installed according to intrinsically safe or nonincendive field wiring practices.
If all field device status messages are ignored, every message from nuisance to critical will be ignored.
Voltage measurements are for reference purposes only. Do not make critical process control decisions
based upon this voltage.