Indoor Air Quality

Sensitive, low-cost solution goes beyond CO2

The climate control industry measures indoor air quality by the level of temperature, humidity and carbon dioxide (CO2). Consumers, on the other hand, rate air quality by the amount of volatile organic compounds (VOCs) such as smoke, cooking odors, bio-effluence and outdoor pollutants. Unfortunately, these VOCs are not detected by temperature, humidity or CO2 sensors. For that, you need MOS technology.

Superior detection with MOS technology
AppliedSensor's Indoor Air Quality (IAQ) Module is equipped with two MOS sensor elements: one optimized for detecting reducing gases such as CO and hydrocarbons, and the other optimized for detecting oxidizing gases such as NO2. A change of resistance in the presence of these gases generates a signal that is translated into specific air quality levels and linked to specific gas concentration ranges. When the threshold air quality levels for target gases is exceeded, the module alerts the climate control system to increase air flow by initiating a ventilating action, such as turning on a fan.

As close to human perception as possible
During field tests, the IAQ module demonstrated high sensitivity and fast response to target VOCs. In addition, when referenced against CO2 sensors, the AQ module showed direct, consistent and reliable correlation to CO2 levels.