Eliminate the trouble, risk and ongoing cost of gas cylinders. Easy to install, fully automatic, with no regular maintenance required. Ultra-dry, CO₂-free air with up to a 56 lpm flow with < 1 ppm CO₂ content. Two models available: The PCDA112 and the PCDA120 calibrated for your airflow needs.

FTIR Purge Gas Generator Description of Operation

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The FTIR Purge Gas Generator employs Pressure Swing Adsorption (PSA) technology to remove moisture and CO₂ from ordinary compressed air. The compressed air initially passes through an inlet coalescing filter where solid contaminants, condensed moisture and oils are removed via an auto drain. The 3-way solenoid valve [1] then directs the air into one of two desiccant chambers [2] where the water vapor and CO₂ are removed.

The dry, CO₂-free air leaves the desiccant chamber via air tubes [3] through the shuttle valve [4], through the outlet filter-regulator and then onto the application. A precision orifice [5] in the outlet shuttle allows a portion of the purified air to be redirected back through the off –line tower, purging the accumulated moisture and CO₂.

The purge air exits via a 3-way solenoid valve [1] and muffler. A solid state timer governs the process by controlling the 3-way valve for a continuous supply of dry, CO₂-free air.