Inspur NF5260FM6, Руководство пользователя

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ANSI/ISA-71.04-2013 Environmental Conditions for Process Measurement and
Control Systems: Airborne Contaminants classifies gaseous corrosivity levels
into G1 (mild), G2 (moderate), G3 (hash), and GX (severe). Table 11-8 shows
the Gaseous Corrosivity Levels per ANSI/ISA-71.04-2013.
Table 11-8 Gaseous Corrosivity Levels per ANSI/ISA-71.04-2013
Gaseous
Corrosivity
Level
Copper
Reactivity
Level
Silver Reactivity
Level
Description
G1 (Mild) < 300 Å/month < 200 Å/month An environment sufficiently
well-controlled so that
corrosion is not a factor in
determining equipment
reliability.
G2
(Moderate) < 1000
Å/month < 1000 Å/month An environment in which
the effects of corrosion are
measurable and may be a
factor in determining
equipment reliability.
G3 (Harsh) < 2000
Å/month < 2000 Å/month An environment in which
there is high probability that
a corrosive attack will occur.
GX (Severe) ≥ 2000
Å/month ≥ 2000 Å/month An environment in which
only specially designed and
packaged equipment would
be expected to survive.
Make sure that the corrosion rates of the tested copper and silver samples meet the
requirements of the corrosion concentration levels specified in "Gaseous
Corrosivity Levels per ANSI/ISA-71.04-2013." To do so, see the selected types of
corrosive gases and their concentration limits provided in the table "Concentration
Limits of Corrosive Gases in Data Centers."
Table 11-9 Concentration Limits of Corrosive Gases in Data Centers
Group
Corrosive Gas Unit Concentration
Group A
Hydrogen
sulfide (H
2
S)
ppba < 3
Sulfur dioxide
(SO
2
)
ppb < 10
Chlorine (Cl
2
) ppb < 1
Nitrogen
dioxide (NO
2
)
ppb < 50