| The quality classes for compressed air defined in DIN ISO 8573 -1 make it easier for the user to set his requirements and choose the equipment he needs to treat the air. The norm is based on maker’s specifications giving defined limits for their equipment and machinery pertaining to the purity of compressed air.
The DIN ISO 8573-1 norm defines quality classes for compressed air according to:
Oil content
Definition of the residual quantity of aerosols and hydrocarbons contained in the compressed air.
Particle size and density
Definition of the size and concentration of solid matter particles that may remain in the compressed air.
Pressure dew point
Definition of the temperature to which the compressed air can be cooled without condensation of the moisture it contains. The pressure dew point changes with the air pressure.
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