Autocalibration of Dew Point Hygrometer Based on Integrated Semiconductor Detector

The autocalibration procedure of the fast dew point hygrometer based on integrated semiconductor dew detector is presented in the paper. Proposed method is based on detector threshold level setting at 98% of difference between maximal impedance (dry detector) and minimal impedance (fully wet detector). The threshold value was set experimentally by analyzing of detector impedance characteristic in the region close to dew point. Tests of the device proved efficiency of proposed method.