Emerson Rosemount 5400 Series - Page 24

June 2016
24
Quick Start Guide
Special Conditions for Safe Use (X):
1. The intrinsically safe circuits do not withstand the 500V AB test as specified in EN
60079-11:2012 clause 6.4.13.
2. Potential ignition hazards by impact or friction need to be considered according to EN
60079-0:2012 clause 8.3 (for EPL Ga and EPG Gb), when the transmitter enclosure and
antennas exposed to the exterior atmosphere of the tank, is made with light metals
containing aluminium or titanium.
The end user shall determine the suitability with regard to avoid hazards from impact
and friction.
3. The antennas for type 5400 are non-conducting and the area of the non-conducting
part exceeds the maximum permissible areas for Group IIC, according to EN
60079-0:2012 clause 7.4: 20 cm
2
for EPL Gb and 4 cm
2
for EPL Ga. Therefore, when the
antenna is used in a potentially explosive atmosphere, appropriate measures must be
taken to prevent electrostatic discharge.
4. Parts of the rod-antennas, for type 5400 are non-conducting material covering metal
surfaces. The area of the non-conducting part exceeds the maximum permissible areas
for Group III according to EN 60079-0 .2012 clause 7.4:3 Therefore, when the antenna is
used in a potentially explosive atmosphere group III, EPL Da, appropriate measures must
be taken to prevent electrostatic discharge.
5. The Ex ia version of model 5400 may be supplied by an “Ex ib” certified safety barrier.
The whole circuit shall then be regarded type “Ex ib”. The preferred type “ia” or “ib” shall
be indicated on the marking label as specified in the instructions for the transmitter. The
antenna part, located in the process vessel, is classified EPL Ga and electrically separated
from the “Ex ia” or” ib” circuit.
6. 1/2” NPT threads need to e sealed for dust and water ingress protection, IP 66, IP 67 or
“Ex t”, EPL Da or Db is required.
I1 ATEX Intrinsic Safety
Certificate: Nemko 04ATEX1073X
Standards: EN 60079-0:2012, EN 60079-1:2014, EN 60079-11:2012,
EN 60079-26:2015, EN 60079-31:2014
Markings: II 1G Ex ia IIC T4 Ga (-50°C  Ta  +60°C /+70°C)
II 1/2G Ex ib IIC T4 Ga/Gb (-50°C  Ta  +60°C /+70°C)
II 1D Ex ia IIIC T69°C/T79°C Da, (-50°C  Ta  +60°C /+70°C)
II 1D Ex ib IIIC T69°C/T79°C Da/Db, (-50°C  Ta  +60°C /+70°C)
Special Conditions for Safe Use (X):
1. The intrinsically safe circuits do not withstand the 500V AB test as specified in EN
60079-11:2012 clause 6.4.13.
2. Potential ignition hazards by impact or friction need to be considered according to EN
60079-0:2012 clause 8.3 (for EPL Ga and EPG Gb), when the transmitter enclosure and
antennas exposed to the exterior atmosphere of the tank, is made with light metals
containing aluminium or titanium.
The end user shall determine the suitability with regard to avoid hazards from impact
and friction.
3. The antennas for type 5400 are non-conducting and the area of the non-conducting
part exceeds the maximum permissible areas for Group IIC, according to EN
60079-0:2012 clause 7.4: 20 cm
2
for EPL Gb and 4 cm
2
for EPL Ga. Therefore, when the
antenna is used in a potentially explosive atmosphere, appropriate measures must be
taken to prevent electrostatic discharge.