A Dew point meter is a tool that measures the temperature and relative humidity in the air. Dew point allows you to determine whether condensation will form on a surface. measures dew point by utilizing microprocessor circuitry to convert sensor signal by the use of psychrometric equations. Assembled in a rugged handheld IP65 protected plastic enclosure and equipped with quick-disconnect tubing couplings and an internal sensor manifold. Dew point meter used for compressed air and nitrogen gasses.