PDF- -Packaging Instructions - Calculation Based on DIN 55474

Description

Calculation based on DIN 55474 How to calculate the required number of drying agent units: n = 1/a · ( V · b + m · c'+ A · e · D'· t ) n = number of the drying agent units a = amount of water vapour to be adsorbed by drying agent unit according to the permitted final moisture content Final Moisture: 20 % RH a = 3 g 40 % RH a = 6 g 60 % RH a = 8 g e = correction factor with regard to the final moisture: for 20 % RH e = 0,9 for 40 % RH e = 0,7 for 60 % RH e = 0,6 v = volume inside the packaging in m³ b = humidity content per m³ air subject to the temperature and relative humidity during the packing,

at 20°C and 85%RH b = 15g/m³

m = weight of the hygroscopic packing in kg c'= factor for moisture content per gram of the hygroscopic packing aid subject to the dry condition for wood,

paper and cardboard with an undefined moisture content c'= 140 with defined pre-desiccation c'= 0 A = surface of the barrier foil in m² D'= water vapour permeability for the expected climate in g/m² D

Regulation in compliance with DIN 53122 or the information supplied by the barrier foil manufacturer

t = transport and storage time in t (days)

Please request our drying agent calculation program to determine the amount of desiccant required in compliance with DIN 55473

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