What type of devices are all RDP monitors classified as?

All Radon Detector Proficiency (RDP) monitors are classified as active devices. This classification is based on their capability to continuously sample air and measure radon levels. Active devices typically use fans or pumps to draw air into the detector, allowing for real-time monitoring and precise radon concentration readings. They provide immediate feedback, which is essential for ongoing assessments and for making timely decisions regarding radon mitigation measures.

Active devices differ from passive ones, which rely on natural air diffusion to collect samples over a set period without mechanical assistance. While portable devices refer to the ease with which some detectors can be moved and used in different locations, the term 'permanent devices' generally applies to systems installed in homes for continuous radon monitoring. Understanding these classifications helps in determining the most suitable equipment for specific radon measurement needs in various environments.