Drying out the Simple Dew analyzer:

 

Option 1: 

The easiest way to remove moisture is to flow dry compressed air*, nitrogen, or argon through the analyzer, until the dew point reading drops and stabilizes.  This can take up to two days depending on the amount of moisture in the sampling lines and analyzer. 

 

*Dry compressed air is compressed air produced by a facility air compressor that has flowed through a desiccant or refrigerated air dryer with a dew point of 40°F (4°C) or less.

 

Disassemble the sampling line filter to determine if the element is saturated with moisture.  Replace the element if it contains moisture, as leaving it in the sampling line will increase the drying time significantly. 

 

                                       

Connect a dry gas source to the sampling line of the Simple Dew.  Verify that the pressure is low (less than 2 psi) to prevent damage to the dew point sensor.  Adjust flow through the Simple Dew to 3 to 5 scfh of flow indicated by the flow meter on the front of the Simple Dew.  Allow gas to flow through the Simple Dew and monitor the dew point reading from the sensor.  As the sample line and sensor dry out, the dew point reading should drop and stabilize.