Performance of the Aranet Radon Monitor

Customer-grade affordable active radon monitors occupy a growing segment of the radon measurement market. This is no surprise given the fair price, easy operation, versatile applicability and reasonable performance. A relatively recent member of the family is the Aranet Radon-plus, made by a Latvian company. Two devices were tested in parallel together with one RadonEye, an already well established monitor of this class. In comparison with the latter, the Aranet has a somewhat lower sensitivity, but additional useful features, namely a time stamp and measurement of meteorological parameters. Operability via Smartphone and Bluetooth is very similar. One difficult issue is data smoothing that introduces artificial autocorrelation of reported data which is problematic in certain applications. In this paper, several experiments under different exposure scenarios (indoors, outdoors, thoron, moving) to assess the performance of the Aranet and some considerations regarding counting statistics are presented.