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What is the reason for fresh air purges?

April 26, 2017air fresh purges

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What is the reason for fresh air purges?

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Periodic fresh air purges rejuvenate electrochemical sensors. Without a fresh air purge electrochemical sensors will become “saturated’ and the output will drift. The amount of time for the purge is generally dependent upon the flue gas concentration and the time of exposure. The higher the concentration and longer the exposure, the more often the fresh air purge is needed. The fresh air purge function can be started manually or automatically in the program mode. A chart for the recommended purge cycles is in the appendix in the 350 M/XL manual. To view the chart click here.