Relative Humidity

Relative Humidity is expressed as the ratio of the quantity of water vapour present in the air to the quantity at which the air would reach saturation (100%) at a given temperature. Hanna is one of the few manufacturers offering a wide range of relative humidity (RH) meters, called hygrometers. Calibration is performed at the factory using state-of-the-art humidity chambers and tuned at 3 different precise points (14%, 50%, 80%) tracable against  a NIST standard. Each model has been specifically designed around certain field applications and environments.