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MLT 2 / BINOS
100 F
Emerson Process Management Manufacturing GmbH & Co. OHG
2 - 13
ATEX Instruction Manual
HAS8xE-IM-ATEX
January 2004
2-5 Safety Device Settings
The EEx safety device is delivered with fixed
basic parameters. The purge gas pressure
is preset to 14 hPa (rel.; for flammable
gases). Useful modifications such as
increasing the max. purge gas pressure
must only be done after studying the
appropriate sections of the manual of the
EEx p safety device.
As the parameters are selected to be in
conformance with the type test results, some
of them are not allowed to be changed!
This applies to the pre-purge time, which is
adjusted to ensure a 5 times volume
exchange within the analyzer enclosure at a
preset purge medium flow!
It is not allowed to change
the internal purge medium
path.
The pressurization system is provided with
a bypass function to switch off the automatic
monitoring facility. It is therefore also
possible to switch on the pressurized system
with the housing door open for setting work
resp. to keep the analyzer powered even if
the front door is opened.
The use of this function is
intended for maintenance
purposes only!
This facility should however
only be used when it has
been ascertained that there is
no explosive atmosphere in
the vicinity of the unit (fire
safety certificate).
2-6 Special Remarks and Instructions
2-5 Safety Device Settings
When maintenance work has been finished
is has to be verified that the bypass is turned
off!
The pressurization system M code, preset
to 0001, must be replaced by an individual
code which must then be entered.
The pressurization system by-pass code,
preset to 0002, should for safety reasons
be replaced by an individual code, unequal
Zero.