Specific Gravity Settings

The Specific Gravity is not used in the calculation of dew point.  It is only used in the determination of ppm/ppb (parts per million/billion of water).  If only dew point is displayed, the Specific Gravity value can be ignored.  If ppm/ppb calculations are going to be performed, the specific gravity of the gas that is being measured must be entered.  This information can be found from a variety of sources on the Internet.