Safety Instrumented Systems (4-20 Ma Only); Safety Messages; Terms And Definitions - Emerson Rosemount 5408 Reference Manual

8 Safety Instrumented Systems (4-20
mA only)
8.1

Safety messages

Instructions and procedures in this section may require special precautions to ensure the
safety of the personnel performing the operations. Information that potentially raises
safety issues is indicated by a warning symbol (
before performing an operation preceded by this symbol.
WARNING!
Failure to follow safe installation and servicing guidelines could result in death or serious
injury.
•
Explosions could result in death or serious injury.
•
•
•
•
Electrical shock could cause death or serious injury.
•
•
8.2

Terms and definitions

Table 8-1: Terms and Definitions
Term Definition
BPCS Basic Process Control System
λ Dangerous Undetected
DU
Rosemount 5408 and 5408:SIS Level Transmitters
Make sure only qualified personnel perform the installation.
Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
Before connecting a Field Communicator in an explosive atmosphere, ensure the
instruments are installed in accordance with intrinsically safe or non-incendive field
wiring practices.
In Explosion-proof/Flameproof and Non-Incendive/Type n installations, do not remove
the transmitter covers when power is applied to the unit.
Both transmitter covers must be fully engaged to meet Explosion-proof/Flameproof
requirements.
Avoid contact with the leads and terminals. High voltage that may be present on leads
can cause electrical shock.
Make sure the mains power to the transmitter is off and the lines to any other external
power source are disconnected or not powered while wiring the transmitter.

Safety Instrumented Systems (4-20 mA only)

). Refer to the following safety messages
131