Gas-Permeation

The devices for measuring gas permeability (hydrogen permeation) can be used for various materials and gases (air, O₂, N₂, CO₂, CH₄, H₂, He, organic gases and mixtures).

following devices can be used to test flat materials. The principle of permeation measurement is based on the pressure difference method. For this purpose, both chambers are evacuated. The gas to be tested then flows into one side of the chamber at very low pressure. If the evacuated pressure increases on the opposite side, this is a measure of the permeation through the separating material.

By measuring the pressure difference, the GTR-G1, GTR-G3, N500 and N530 models can measure the transmission rate of gas, the solubility coefficient, the diffusion coefficient and the permeability rate through plastic films, laminated films, specially impermeable materials, tyres, metal sheets, osmosis membranes and many other materials. The GTR units are controlled via an integrated tablet. Temperature levels are set via the software and are controlled automatically. For different humidity an extra controller could be added.

Due to their robustness and because no sensor is consumed, the systems are also very suitable for oxygen permeation. The GTR units are equipped with three gas connections as standard. If you want to connect more than three gases, you need an appropriate multi-way valve system (accessory).

The TQD and N permeation devices measure the volume flow through various materials such as fabrics, filters, leather, textiles, non-woven fabrics, paper, battery membranes and also finished products such as breathing masks.