Dell EMC PowerEdge T140 - Page 100

Table 30. Particulate contamination specications
Particulate contamination Specications
Air ltration
Data center air ltration as dened by ISO Class 8 per ISO 14644-1
with a 95% upper condence limit.
NOTE: This condition applies to data center environments
only. Air ltration requirements do not apply to IT
equipment designed to be used outside a data center, in
environments such as an oce or factory oor.
NOTE: Air entering the data center must have MERV11 or
MERV13 ltration.
Conductive dust Air must be free of conductive dust, zinc whiskers, or other
conductive particles.
NOTE: This condition applies to data center and non-data
center environments.
Corrosive dust
• Air must be free of corrosive dust.
• Residual dust present in the air must have a deliquescent point
less than 60% relative humidity.
NOTE: This condition applies to data center and non-data
center environments.
Table 31. Gaseous contamination specications
Gaseous contamination Specications
Copper Coupon Corrosion <300 Å/month per Class G1 as dened by ANSI/ISA71.04-1985.
Silver Coupon Corrosion <200 Å/month as dened by AHSRAE TC9.9.
NOTE: Maximum corrosive contaminant levels measured at ≤50% relative humidity.
100 Technical specications