Abstract：A negative temperature environment relative humidity generator developed by the Changcheng Institute of Metrology & Measurement is introduced, which is based on double temperature and double pressure method. By setting the required temperature and relative humidity of environment, to calculate the value of the corresponding dew point, automatically set full and internal pressure and the temperature of the device and measuring chamber, thereby generating set temperature under the condition of the relative humidity of the sample gas, the relative humidity range is 10%RH～95%RH (-60～40 ℃). The relative humidity parameter calibration process and the corresponding experimental measurement results are analyzed.
巩娟,吕国义,何萌. 负温环境下相对湿度参数校准装置研制及试验测试[J]. 计量学报, 2015, 36(6A): 55-69.
GONG Juan,Lü Guo-yi,HE Meng. Development and Measurement of Relative Humidity Parameter Calibration Device in Negative Temperature Environment. Acta Metrologica Sinica, 2015, 36(6A): 55-69.
［1］Thunder Scientific Corporation.Revision A. Dew/Frost Point Uncertainty Analysis of the Model 3900 Two-Temperature, Two-Pressure Low Humidity Generator ［M］.Thunder Scientific Corporation,2006
［2］李英干,范金鹏.湿度测量［M］.北京:气象出版社,1990.
［3］吕国义,周庆福,巩娟,等.负温环境相对湿度发生器研制［J］. 工业计量2013,23（5）:40-41.
2015, Vol. 36 
