{"id":752,"date":"2022-05-02T09:14:51","date_gmt":"2022-05-02T09:14:51","guid":{"rendered":"https:\/\/www.bestairpurifiercanada.com\/?p=752"},"modified":"2022-05-02T09:14:51","modified_gmt":"2022-05-02T09:14:51","slug":"how-do-air-purifiers-measure-air-quality","status":"publish","type":"post","link":"https:\/\/bestairpurifiercanada.com\/fr\/how-do-air-purifiers-measure-air-quality\/","title":{"rendered":"How Do Air Purifiers Measure Air Quality?"},"content":{"rendered":"

Air purifiers improve air by removing pollutants and ventilating indoor spaces. Some air purifiers are equipped to detect air quality\u2014the sensors in such purifiers measure and report air quality in your home. But the most common question is: how do air purifiers measure air quality?<\/p>\n

An air purifier constantly monitors and reports air quality to let you know when the air quality becomes poor. Most air purifiers monitor air quality in real-time and automatically adjust the fan\u2019s speed.<\/p>\n

Apart from that some of the best air purifiers have air quality indicators that show you how clean or dirty the air is. This could be in form of a digital scale showing the amount of PM (particulate matter) in the air or rings that change colour depending on air quality.<\/p>\n

First, let’s take a look at the technology used in monitoring air quality<\/a>.<\/p>\n

The Technology<\/h2>\n

Air purifiers have inbuilt sensors for this task. The sensors vary from one air purifier to another but often detect gases, temperature, humidity, and particulate matter. Some sensors operate with infrared and laser beams to provide you with an air quality evaluation.<\/p>\n

As particles move around the air purifier, they absorb some amount of infrared or laser light. The sensor registers the absorption level, indicating the air pollution level in your home.<\/p>\n

To fully understand how air purifier sensors measure air quality, you should know the different types of sensors that exist. There are two standard air quality sensors: PM (particulate matter) and gas.<\/p>\n

PM sensors<\/h3>\n

Particulate matter<\/a>(PM) is a mixture of airborne solid particles and liquid droplets which can cause allergic reactions and other health problems when inhaled. The particles vary in size, shape, composition, and optical properties.<\/p>\n

Air purifiers use a standard nomenclature, PMx, to define the particle size with x as the airborne particle’s maximum diameter in microns. For example, PM2.5<\/a> defines airborne particles with a diameter of 2.5 microns and PM10<\/a> with a diameter of 10 microns.<\/p>\n

PM sensors measure the concentration of particles with a diameter up to PM10.<\/p>\n

\"How
Some Molekule air purifiers allow you to monitor air quality on your smartphone<\/figcaption><\/figure>\n

Here are the different types of pollutants in the air that you breathe and the PM group they belong to:<\/p>\n