The XTDL--HR™ is designed with a new proprietary optical sampling system for moisture dew point in your high CO2 gas applications. From beverage&food to plastics applications, the COSA Xentaur XTDL--HR™ was designed to accurately measure the moisture dew point in a carbon dioxide background gas without the worry of cleaning the optics or frequently replacing sensing elements due to frequent drift or failure. Once calibrated at the factory, no further recalibrations are required.