Why measure Temperature and Relative Humidity?
ASHRAE Standard 55-1992, Thermal Environmental Conditions for Human Occupancy, sets guidelines intended to achieve thermal conditions that at least 80% of the occupants would find comfortable. ASHRAE Relative humidity levels are recommended between 25-60%. Increases concentrations of microbiological contaminants. ** Low RH causes skin to become dry leading to chapping and irritation, increases static electricity hindering computer operation. ** High RH levels can result in condensation and thus the development of molds and fungi. High temperature and humidity levels can increase the concentrations of some pollutants. To obtain an accurate reading of pollutants levels, it is necessary to take into account these levels and balance the temperature and relative humidity with the carbon dioxide levels.