How do air purifiers detect air quality?
Air purifiers are electrical devices that can purify indoor air, mainly used to remove indoor dust, bacteria, viruses, odor, and other pollutants to improve indoor air quality. According to different purification technologies and working principles, air purifiers can be divided into various types, including negative ion purifiers, ozone purifiers, high voltage electrostatic purifiers, plasma purifiers, and so on. This article mainly introduces How do air purifiers detect air quality.
How do air purifiers detect air quality
Air purifiers detect air quality mainly through the following ways:
1. Sensor detection. Air purifiers are equipped with a variety of sensors, such as PM2.5 sensors, VOC sensors, CO2 sensors, etc., through the detection of airborne particulate matter, volatile organic compounds carbon dioxide, and other indicators to assess air quality.
2. Filter status detection. Assess the air quality by detecting the status of the filter. When there are more pollutants in the air, the filter will be contaminated more quickly, at which time the air purifier will issue a warning and prompt to replace the filter.
3. Air Quality Index (AQI) detection. Some air purifiers can obtain local AQI data by connecting to the Internet and automatically adjusting the working mode of the purifier according to the AQI data to provide better air purification.
4. Electrical safety testing. Including testing of electrical safety regulations and electromagnetic compatibility.
5. Air purification effect testing. Detection of particulate matter, formaldehyde, toluene, benzene, ammonia, TVOC, and other indicators.
6. Cumulative purification testing. Detection of particles, formaldehyde, and other indicators.
7. Power detection. Detection of purification energy efficiency and other indicators.
8. Noise detection. Detection of sound power level and other indicators.
9. Bacteria removal performance testing. Detection of white staphylococcus, staphylococcus aureus, Escherichia coli, and another sterilization rate.
10. Harmful substances release detection. Detection of ozone, TVOC, PM10, UV, and other indicators.
11. Removal rate test. Detection of formaldehyde removal rate, toluene, benzene, TVOC, particulate matter, PM2.5, CO2, NO2, SO2, and other indicators.
12. Negative ion concentration detection. Detect negative ions and other indicators.
13. Deodorization performance testing. Detect sulfur dioxide, nitrogen dioxide, ammonia, hydrogen sulfide, acetaldehyde, acetic acid, and other indicators.
The above methods work together to make the air purifier can effectively detect and improve indoor air quality.
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How to monitor toxic and hazardous gases?
In chemical enterprises, there are often leaks, volatilisation or a variety of other causes of combustible and toxic gases, all of which are called hazardous gases.
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Can a smoke alarm detect a gas leak
Smoke alarm detect cannot detect a gas leak. This is because smoke detectors mainly detect smoke, not gas.
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Difference between TVOC VS VOC
VOC refers to the weight of organic volatile matter contained in 1 liter of paint, while TVOC refers to the weight of organic volatile matter contained in 1 liter of paint in the substance of water removed.
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Electrochemical Sensor Solutions for Toxic and Hazardous Gas Detection
Currently known toxic gases can be categorized into irritant gases and asphyxiating gases according to their toxic properties.
The LEL gas detector is a device for monitoring the concentration of combustible gases in the environment. To ensure its accuracy and reliability, periodic calibration and maintenance is required during use.