Two-channel automatic particulate monitoring device

Abstract

The invention discloses a two-channel automatic particulate monitoring device. The two-channel automatic particulate monitoring device comprises a two-channel particulate using module and a two-channel atmospheric particulate detection module. The two-channel particulate using module comprises a sampling gas pump, a gas-flow-ratio adjusting valve and a two-channel particulate sampler. Gas enters the two-channel particulate sampler via the gas-flow-ratio adjusting valve under the action of the sampling gas pump. The two-channel atmospheric particulate detection module comprises two detection channels, a filter paper tape, a filter paper tape supporting structure and a detection platform, wherein each detection channel comprises a sample gas path, a detector and a radioactive source. The monitoring device has a simple structure, realizes rapid and accurate sampling, effectively improves the sampling quality of an atmospheric particulate sampling system and can simultaneously measure the concentrations of particulates with two different particle sizes, i.e., PM10 and PM2.5, in the atmospheric environment.

Description

technical field [0001] The invention relates to the technical field of detection equipment, in particular to a dual-channel particle automatic monitoring device. Background technique [0002] The atmospheric environment has a vital impact on people's life and health, so the monitoring of particulate matter in the atmospheric environment is also particularly important. For a period of time, PM10 inhalable particulate matter has been the focus of monitoring the atmospheric environment, while PM2.5 fine particulate matter is mainly collected for scientific research, so currently routinely used fine particle samplers are all small flow. However, with the deepening of scientific research, people have a better understanding of the physical and chemical properties of fine particles, and found that these particles with an aerodynamic diameter of less than 2.5 μm have a greater impact on the human respiratory system. Because the fine particles suspended in the air often adsorb some ...

AI Technical Summary

Problems solved by technology

[0005] At present, most automatic monitoring instruments on the market are single-channel particle monitors, which can only measure one parameter of PM10 or PM2.5. Two instruments are required to measure two parameters, which occupy a large area, cost high, and require a lot of maintenance. inconvenient

Although there are related dual-channel particulate matter automatic detection devices in the prior art, such products still have relatively large defects in actual use, the most important being the collection of atmospheric particulate matter, especially the classified collection technology of PM10 and PM2.5 And the design of combining this technology with dual detection devices is a technical problem that needs to be improved urgently in the prior art

Images