HOW IT WORKS –

 

The dew point sensor is a “dielectric ceramic” that varies its electrical capacitance with changes in relative humidity.  The sensor is mounted in a short probe, which is installed in a T-fitting that allows the sample gas to flow past the sensor.  The tip of this probe contains the dielectric ceramic relative humidity (RH) sensor, as well as a built in temperature sensor to determine its dry bulb temperature.  Information from both of these sensors is used to compute the resultant dew point, which is displayed on the digital LED display.