Room Pressurization Control Methods - Volumetric Airflow Tracking vs. Differential Pressure Sensing

Proper room pressurization is critical for preventing unwanted air transfer. In chemical and biological research facilities chemical fumes and airborne biological agents must be prevented from migrating out of laboratory rooms to non-laboratory areas. Air must be prevented from flowing into spaces that require a high degree of cleanliness and purity, such as food and drug processing operations. The absence of airborne particulate is especially critical for microelectronics and optical manufacturing. Proper room pressurization is vital for protecting the medical staff and patients from exposure to harmful and sometimes deadly airborne pathogens in treatment facilities. This report discusses the advantages and disadvantages of the two most commonly accepted methods of room pressurization control—Volumetric Airflow Tracking and Differential Pressure Sensing.