Emerson Rosemount CT5100, Reference Manual

Page: 169 / 179

Table 14-4: Common Markings
(continued)
Details
Minimum purge flow rate 280 L/min
Leakage rate 25 L/min
Minimum purge supply pressure 1 Bar
Maximum purge supply pressure 2 Bar
Minimum purge time 2 minutes 30 seconds
Minimum supply pressure 1 Bar
Maximum supply pressure 2 Bar
14.9 Conditions of certification/special conditions
for safe use
Europe
• The purge controller keypad mounted on the front of the equipment shall not be
exposed to direct UV light sources or direct sunlight. Example methods of protection
include, but are not limited to, indoor applications away from UV sources and outdoor
locations under shading. As part of regular inspections, if damage to or deterioration of
the membrane keypad is detected, the unit is to be taken out of service for repair or
replacement.
• The purge controller bypass function shall only be enabled during setup or
maintenance and only when the area is known to be non-hazardous.
• The equipment shall be installed in an area of not more than pollution degree 2 as
defined in IEC 60664-1.
• The cable glands used in the equipment are only suitable for use in areas with a low risk
of mechanical damage and must be suitably protected.
• Rosemount CT5100(Ex) purge controller automatically monitors the internal pressure
of the enclosure and will output any fault conditions onto contact K2. It is the
responsibility of the end user to connect this contact to a suitable facility, such as an
alarm or an automatic shutdown system.
• For correct operation the on-site pressurizing air supply must be capable of providing
at least 25 L/min for leakage compensation.
• When using the Rosemount CT5100(Ex) variant fitted with the Elmess gas cell heater
certified as BVS 14ATEXE155U and IECEx BVS 14.0106U, the equipment top
compartment should be cooled with a source of compressed air at a minimum flow
rate of 280 L/min.
• The Elmess gas cell heater certified as BVS 14ATEXE155U and IECEx BVS 14.0106U may
only be used in combination with the ESI Technology gas cell pressure transducer
certified as TRAC12ATEX0060X and IECEx TRC 12.0025X.
Reference Manual ATEX/IECEX assessment report summary
00809-0100-4512 October 2019
Reference Manual 169