Emerson Rosemount Analytical X-STREAM X2 Series Instruction Manual page 104

X-STREAM X2
Enclosure purge option
The purge medium (e.g. to minimize CO
interference or for enhanced safety while
measuring corrosive or poisonous gases)
• must be dry, clean and free of corro-
sives or components containing sol-
vents.
• has to be free of components to be
measured, to minimize cross interfe-
rences.
Its temperature must correspond to the am-
bient temperature of the analyzer, but be at
least within the range 20...35 °C (68...95 °F).
For information about values for pressure and
flow, please contact your nearest EMERSON
Process Management sales office.
We recomment to always purge
the analyzer enclosure, if gases
are supplied, which may harm
analyzer components, if due to
a leak released into the analyzer
enclosure!
4-4
4.3 Installation - Gas Conditioning
2
Open reference option
In some cases, the measuring cell has an open
reference side, to be supplied with nitrogen.
This nitrogen
• at least should be of quality 5.0, which
means nitrogen of purity ≥ 99.999 %.
If such gas is not available, the substitute
• must be dry, clean and free of corrosi-
ves or components containing solvents.
• has to be free of components to be
measured, to minimize cross interfe-
rences.
In any case, the gas temperature must cor-
respond to the ambient temperature of the
analyzer, but at least be within the range
20...35 °C (68...95 °F).
Pressure and gas flow must remain wi-
thin the values given in
Measuring Principles" within this manual.
Perform a calibration each time
the source of this gas (e. g.
bottle) has changed!
Emerson Process Management GmbH & Co. OHG
Instruction Manual
HASX2E-IM-HS
10/2012
„Chapter 3