Air Visual air quality monitor is an air pollution monitor that uses a high precision laser to count particles in the air, which is then processed with a unique algorithm to calibrate for external factors such as temperature, humidity, and outliers. The air quality monitor showcases live AQI readings of both indoor air and outdoor air.
The Air Visual Node detects PM2.5 particles in the air using a particulate matter sensor. The light scattering laser sensor for PM2.5 measurements throws a laser light beam onto particles, and this light is then irradiated in all directions from these particles (scattering). A light detector (or 'photometer detector') then measure all of this scattered light, and from this, the sensor can calculate the concentration of particles within the chamber. In this way, the sensor is able to detect near microscopic particles ranging from 0.3μm to 2.5μm. The sensor in the Air Visual Node also has a small fan to ensure a constant flow of air through the measuring chamber. Each reading reported from the sensor is calibrated by a special algorithm which takes into account external temperature and humidity values.
The CO2 levels are detected using a carbon-di-oxide sensor, which is an infrared gas sensor. The components of the sensor include an infrared source, light tube, an interference filter and an infrared detector.
The Air Visual Node can be used in multiple places for 24/7 monitoring of air quality: -
Take PM2.5 laser Particles detector Out of the packaging one set of our product including of one PM2.5 detector, One USB Connecting wire, one Instruction.