Study of Stability of Saturated Salt Solutions Cells  

作　　者：Essam Eldin Mahmoud 

机构地区：[1]National Institute for Standards, Tersa St. P. O. Box. 136 Giza, Code. No. 12211, El-Haram, Egypt

出　　处：《Journal of Physical Science and Application》2015年第5期330-333,共4页物理科学与应用（英文版）

摘　　要：This paper study stability of saturated salt solutions cells at 25 ℃. These cells were prepared and measured at National Institute for Standard （NIS-Egypt） to study the stability of the saturated salt solutions. The study was carried out using three saturated salt solutions, which are Potassium Acetate 22.5%, Potassium Iodide 68.9% and Potassium Sulphate 97.3% to cover low, medium and high relative humidity. The study was carried out using different shapes and volumes half liter spherical, liter spherical and liter conical per each salt which was prepared. The apparatus which used in measurement system in the first time are the same which used after ten years. The results show that the change of relative humidity value after ten years ranged from 0.1% to 0.7%. This value is suitable within uncertainty ＋ 2%. The period of stability for each run for all cells was found to be more than five hours and this period enough for calibration. The measurements show that the cells are stable for more than ten years with accepted value.

关 键 词：Saturated salt solutions STABILITY relative humidity dew-point sensor and cells. 

分 类 号：TQ177.373[化学工程—硅酸盐工业] TM452[电气工程—电器]