How do I measure PM 2.5?
How do I measure PM 2.5?
The methods of measuring PM2.5 mainly include manual gravimeter method and continuous automatic method.
Hand gravimeter
Manual gravimeter method is the benchmark method for PM2.5 monitoring, which is used to determine the accuracy and reliability of continuous automatic monitoring methods. This method takes a long time, and the sample needs to be measured after 24 hours of equilibrium under constant temperature and humidity conditions, as a quality control means for automatic monitoring of PM2.5.
Continuous automatic method
The continuous automatic method is a method of real-time monitoring of PM2.5 concentration by using various types of sensors and instruments, such as laser sensors, infrared light-emitting diode sensors, etc., to quickly capture and measure the concentration of particulate matter in the air.
Other methods
In addition to the two main methods mentioned above, there are several other methods of PM2.5 measurement, such as the use of optical dust concentration detection sensors to detect dust and soot levels in indoor air. Although these sensors cannot accurately measure PM2.5 concentration, they can roughly describe the level of air quality.
The methods of measuring PM2.5 mainly include manual gravimeter method and continuous automatic method.
Hand gravimeter
Manual gravimeter method is the benchmark method for PM2.5 monitoring, which is used to determine the accuracy and reliability of continuous automatic monitoring methods. This method takes a long time, and the sample needs to be measured after 24 hours of equilibrium under constant temperature and humidity conditions, as a quality control means for automatic monitoring of PM2.5.
Continuous automatic method
The continuous automatic method is a method of real-time monitoring of PM2.5 concentration by using various types of sensors and instruments, such as laser sensors, infrared light-emitting diode sensors, etc., to quickly capture and measure the concentration of particulate matter in the air.
Other methods
In addition to the two main methods mentioned above, there are several other methods of PM2.5 measurement, such as the use of optical dust concentration detection sensors to detect dust and soot levels in indoor air. Although these sensors cannot accurately measure PM2.5 concentration, they can roughly describe the level of air quality.
To sum up, there are various methods for measuring PM2.5, and appropriate methods can be selected for monitoring according to different needs and conditions.
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