BITMAIN AntMiner S21 Pro - Other Environmental Requirements; Mechanical Active Substances; Corrosive Gas

S21 Pro User Guide
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5.2 Other Environmental Requirements
The server running room shall be free of explosive, conductive, magnetically conductive
and corrosive dust. The requirements of mechanical active substances are shown below.
5.2.1 Mechanical Active Substances
Table 5-2 Requirements of mechanical active substances
Mechanical Active Substance
Requirement
Sand, mg/m
3
≤30
Dust (suspended), mg/m
3
≤0.2
Dust (deposited) , mg/ m
2
h
≤1.5
5.2.2 Corrosive Gas
Table 5-3 Requirements of corrosive gas
Corrosive Gas
Unit
Concentration
H
2
S
ppb
< 3
SO
2
ppb
< 10
Cl
2
ppb
< 1
NO
2
ppb
< 50
HF
ppb
< 1
NH
3
ppb
< 500
O
3
ppb
< 2
Note: ppb (part per billion) refers to the unit of concentration, 1ppb stands for the volume ratio
of part per billion.