scope:

This International Standard specifies reference conditions, test methods and performance data for different types of compressed air dryers. It is applicable to compressed air dryers working with an effective (gauge) pressure of more than 0,5 bar, and include the following; - Adsorption dryers - Membrane dryers - refrigeration dryers (including drying by cooling) - or a combination of these but excluding: - absorption dryers - drying by over-compression Note;a description of the principles of operation of the dryers within the scope of this standard is given in Annex A This International Standard identifies test methods for measuring drying performance, power consumption and noise emission. The drying performance includes the following; - pressure dew point, - flow rate, - pressure drop - compressed air loss This standard also provides part load tests for determining the performance of energy saving devices. This standard identifies technical characteristics and performance data of compressed air dryers that a manufacturer shall give to a purchaser. (See Annex B) For compressed air dryers manufactured in series and sold against performance data published in manufacturers' sales literature, tests as described in Annex C are considered equivalent alternatives.