Accurate automatic air PM2.5 monitoring device

Abstract

The invention discloses an accurate air PM2.5 automatic monitoring device. The device comprises a monitoring box body, a monitoring cavity with a forward opening is formed in the monitoring box body,extending cavities are formed in the left end wall and the right end wall of the forward opening of the monitoring cavity in a communicating mode, fixed magnets are fixedly arranged in the right end walls of the extending cavities, a sealing block is arranged on the left side of each fixed magnet, a movable magnet is fixedly arranged in the right end face of the sealing block and is in magnetic connection with the fixed magnet, a reset spring is fixedly arranged between the left end face of the sealing block and the left end wall of the extending cavity, and a rope penetrating through the reset spring is fixedly arranged on the left end face of each sealing block. The PM2.5 in the air can be monitored by a quality method after being separated from the air, the monitoring data is extremelyclose to real accurate data, and the filter membrane is replaced after each test, so that the influence on the monitoring of the content of PM2.5 particles in the air next time is prevented.

Description

technical field [0001] The invention relates to the related technical field of air pollution monitoring, in particular to an accurate air PM2.5 automatic monitoring device. Background technique [0002] There are currently three main methods for air pollution monitoring: gravimetric method, micro-oscillating balance method, and β-ray method. Among them, the gravimetric method is to weigh the filter membrane that collects PM2.5 with a balance. This is the most accurate method. However, at this stage, this monitoring method needs to be completed manually, the steps are very complicated, and it is difficult to monitor an area for a long time, which is too time-consuming and manpower-consuming, but the other monitoring methods have the problem of inaccurate data. [0003] This application describes an accurate air PM2.5 automatic monitoring device, which can solve the above problems. Contents of the invention [0004] Aiming at the deficiencies of the above-mentioned technolo...

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Problems solved by technology

[0002] There are currently three main methods for air pollution monitoring: gravimetric method, micro-oscillating balance method, and β-ray method. Among them, the gravimetric method is to weigh the filter membrane that collects PM2.5 with a balance. This is the most accurate method. However, at this stage, this monitoring method needs to be completed manually, the steps are very complicated, and it is difficult to monitor an area for a long time, which is too time-consuming and manpower-consuming, but there is a problem that the data is not accurate enough in other monitoring methods

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