While the partial pressure of water in the purge gas is less than in the sample gas, Nafion™ polymer will selectively transfer water vapor from the sample gas across its membrane and into the purge gas flow, yielding a drier sample gas at the sample gas output.
Polytube (PD) Series Gas Sample Dryers
Polytube Dryer Series (PD-Series) gas dryers contain multiple Nafion™ tubes allowing for a higher volume of gas movement in a shorter sample path. The PD-Series offers our highest drying capacity. It is the ideal choice for both high and low flow gas drying applications.
£1,245.45 – £11,951.95 ex VAT
How it works
Unlike our other single-tube gas dryers, Polytube Dryer Series (PD-Series) gas dryers contain multiple Nafion™ tubes allowing for a higher volume of gas movement in a shorter sample path. Due to a greater surface area of Nafion™ tubing the PD-Series offers our highest drying capacity.
The ability to accurately measure gas components and concentration is essential to optimize production and meet regulatory requirements. “Polishing” a sample gas refers to further drying the sample after the thermoelectric cooler to achieve an even lower dew point which helps to provide greater analytical accuracy and protects the sensors and analyzer from the potentially harmful effects of water.
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