67
Reference Manual
00809-0100-4530, Rev DD
May 2016
Note
Grounding the transmitter via threaded conduit connection may not provide sufficient
ground.
Note
In the explosion-proof/flameproof version, the electronics is grounded via the transmitter
housing. After installation and commissioning make sure that no ground currents exist due
to high ground potential differences in the installation.
4.4
Cable selection
Use shielded twisted pair wiring for the Rosemount 5300 Series to comply with EMC
regulations. The cables must be suitable for the supply voltage and approved for use in
hazardous areas, where applicable. For instance, in the U.S., explosion-proof conduits must
be used in the vicinity of the vessel. For the ATEX flameproof and the IECEx approval
versions of the Rosemount 5300 Series, suitable conduits with sealing device or flameproof
(EEx d) cable glands must be used depending on local requirements.
Use 18 AWG to 12 AWG to minimize the voltage drop to the transmitter.
Note
Avoid running instrument cable next to power cables in cable trays or near heavy electrical
equipment.
It is important that the instrument cable shield be:
trimmed close and insulated from touching the transmitter housing.
continuously connected throughout the segment.
connected to a good earth ground at the power supply end.
4.5
Hazardous areas
When the Rosemount 5300 Transmitter is installed in a hazardous area, local regulations
and specifications in applicable certificates must be observed.