Water Vapour Permeability Tester

Circular test specimens fixed in a water vapour permeability tester is equipped with a certain amount of solid desiccant test bottle mouth, successively with the desiccant inside the test specimen will bottle and separated from the air bottle, through the water vapour permeability tester to rotate the bottle test and make the air disturbance fan rotation, constant motion of the desiccant constantly to absorb the water vapor through the test specimen, The water vapor permeability of the test material was evaluated by weighing the mass of water vapor absorbed by the desiccant in the test bottle at a certain time