System for early condensation detection and prevention in residential buildings

In this paper a system is described that measures the indoor relative humidity and temperature of a room, outdoors relative humidity and temperature and the temperature of the interior wall in the coldest part of the wall. Moisture and temperature sensors will be used for measurements, and for measurement system and processing the Programmable Wireless Stamp (PWS) employed. The data will be viewed through an LCD display. Out of the measured data, the following information will be calculated: indoor and outdoor dew point temperature and their difference, indoor and outdoor humidity and their ratio and the difference between the wall temperature and indoor dew point. This data will also offer corresponding warnings, advice and instructions. The system will consist out of a central inner unit with a display which will measure the indoor humidity and room and wall temperature, and out of an outdoor weatherproof unit which will measure the outside humidity and temperature. The system will be used for early detection and prevention of condensation on walls and its consequences.