Dell PowerEdge R520 Owner's Manual page 121

Environmental
Conductive Dust
NOTE: Applies to data center and non-data center
environments.
Corrosive Dust
NOTE: Applies to data center and non-data center
environments.
Gaseous Contamination
NOTE: Maximum corrosive contaminant levels measured at ≤50% relative humidity.
Copper Coupon Corrosion Rate
Silver Coupon Corrosion Rate
Air must be free of conductive dust, zinc whiskers, or
other conductive particles.
• Air must be free of corrosive dust.
• Residual dust present in the air must have a
deliquescent point less than 60% relative humidity.
<300 Å/month per Class G1 as defined by ANSI/
ISA71.04-1985.
<200 Å/month as defined by AHSRAE TC9.9.
121