Determination of Water Vapour Diffusion and Absorption

The measuring of diffusion can be carried out according to standards and/or with micro-processor controlled sensor-technology (Lyssy-Methode).
The standardised methods and climates are described e.g. in EN ISO 12572, EN 1931, EN ISO 12571.
The appliance L 80-5000 is equipped with the most modern measuring technology and enables us to calculate dependable sd-values of your clients products in the shortest time.
In the air-conditioned measuring-chamber, the samples are exposed to a defined partial pressure-gradient. The density of the resulting steam-flow is recorded and used for determination of the sd-value.