Product Manual

ISO
class
Dust Water Oil
Maximum number of particles per m
3
as
function of particle size d
Pressure dew point Total oil concentration
(aerosol, liquid and
vapour) mg/m
3
0.1< d ≤0.5
μm
0.5< d ≤1.0
μm
1.0< d ≤5.0
μm
°C °F
0 As specified by the equipment user or supplier and more stringent than class 1
1 ≤ 20000 ≤ 400 ≤ 10 ≤ -70 ≤ -94 ≤0.01
2 ≤ 400000 ≤ 6000 ≤ 100 ≤ -40 ≤ -40 ≤0.1
3 not specified ≤ 90000 ≤ 1000 ≤ -20 ≤ -4 ≤1
4 not specified not specified ≤ 10000 ≤ +3 ≤ +37.4 ≤5
5 not specified not specified ≤ 100000 ≤ +7 ≤ +44.6 -
6
mass concentration: 1 - 5 mg/m
3
≤ +10 ≤ +50 -
Terms and definitions
Particle: small discrete mass of solid or liquid matter
Particle size d : length of the greatest distance between two external boundaries
Dew point: temperature at which water vapour begins to condense
Pressure dew point: dew point of the air at the specified pressure
A desiccant dryer will be needed to reduce the dew point down to -40 °C (-40°F).
The air purity according to ISO 8573-1:2010 is expressed as follows: class [X.Y.Z], where X, Y and Z are
respectively the purity classes with regard to dust, water and oil.
A few examples are given in the image below.
A General purpose protection
Air purity class ISO 8573-1:2010 [2:-:3]
B High purity air with reduced dew point
Air purity class ISO 8573-1:2010 [1:4:1]
C General purpose protection and reduced oil concentration
Air purity class ISO 8573-1:2010 [1:-:2]
D High purity air with extremely low dew point
Air purity class ISO 8573-1:2010 [2:2:1]
Instruction book
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