Equivalent Safety Devices - Emerson ROSEMOUNT MLT 2 Upgrade Manual

MLT 2 / BINOS
1.3.9

Equivalent Safety Devices

An explosion may result of using a pressurization system other than
recommended by Emerson Process Management!
It is the responsibility of the operator/owner to choose and install such
systems not provided and specified by Emerson Process Management.
In no case Emerson Process Management is held responsible for any
damage, personal injury etc. resulting from choosing different pressurization
systems!
In principle it is possible to use other equiva-
lent pressurization systems than described
in this manual, as long as they meet the fol-
lowing requirements:
• Device is ATEX approved
• Adjustable pre-purge phase
• Minimum purge flow rate :
6,8 Nm
• Limited purge gas pressure during the pre-
purging phase: < 25 mbar
• Input pressure for purge gas supply:
1-10

100 F
1.3
EXPLOSION HAZARD
3
/h resp. 9,2 Nm³/h
2 ... 4 bar
Technical Data
Category 2 equipment:
• Relay contacts for all-pole disconnection
of the analyzer from power supply
• Relay contacts for disconnecting additional
external equipment
• Connection facility for bypass key switch,
providing intrinsically safe signal for scan-
ning the key switch
• For units measuring flammable gases,
only:
Connection facility for differential pressure
switch, providing intrinsically safe signal for
scanning the switch.
ATEX Instruction Manual
Emerson Process Management GmbH & Co. OHG
ETC01035
02/2008