MetOne BAM1020 online particulate matter monitor from the United StatesThe principle of beta ray attenuation is used for fully automatic real-time continuous online monitoring of suspended particulate matter concentration in ambient air, which is an ideal tool for improving air quality. The monitor has been certified by the US Environmental Protection Agency (EPA) (EQPM-0798-122) and has gained widespread recognition and a good reputation around the world, including in China.

Testing principle:β - ray attenuation method
The BAM1020 online particulate matter monitor uses the principle of beta ray attenuation to monitor particulate matter in the air. The amount of beta rays absorbed by dust particles is directly proportional to the mass of the dust particles. Calculate the mass concentration of dust (mg/m3) based on the amount of beta rays absorbed by dust particles. This principle is not affected by the size and color of dust particles, thus accurately measuring the concentration of particulate matter in the ambient air.

Performance characteristics:
Extremely low operating costs; Simple and fast on-site calibration (using universal FRM calibration film);
● Automatic hourly span inspection; Filter every hour to reduce the impact of volatile compounds;
Realize remote unmanned operation for up to 60 days through mutual visits between websites;
By using advanced heaters, the relative humidity of the sample can be precisely controlled;
● Configure microprocessor: LCD display, built-in self-test and diagnosis, can display hourly and daily concentration data separately, configure operation keyboard, memory can store up to 182 days of data, can remotely control and download data;
● Retrieve data by connecting to a computer, modem, printer, or data acquisition system through the RS-232 serial port.