Dew Point Generation Device Based on Saturation Method and Diversion Method
According to the requirement of standard humidity generator of dew point generator in JJG 499-2021"Verification Regulation of Precision Dew Point Instrument",the dew point generator based on saturation method and split method is developed in this paper.At the same time,in the range of dew-point(-70~+20)℃,the cold mirror dew-point meter was used to measure the dew-point stability,and the uncertainty was evaluated.The results show that the measurement value of the device is consistent with the humidity standard of precision cold mir-ror dew point instrument in the uncertainty range,and can meet the calibration and verification work of various common dew point instruments.
saturation methoddiversion methoddew point generatorprecision dew point meter