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Fine particle matter measuring device and measuring method

A fine particle and measuring device technology, which is applied in the direction of measuring device, particle suspension analysis, suspension and porous material analysis, etc., can solve the problems of PM2.5 measurement error and unknown particle density

Inactive Publication Date: 2015-11-25
YUANTAI AUTOMATION TECH SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually the laser scattering method is only sensitive to particles above 0.3 microns, and the density of the particles is also unknown, resulting in a large error in PM2.5 measurement

Method used

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  • Fine particle matter measuring device and measuring method
  • Fine particle matter measuring device and measuring method
  • Fine particle matter measuring device and measuring method

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Embodiment 1

[0058] see figure 1 , figure 2 as well as image 3 , as shown in the legend therein, a fine particle measuring device is used to detect the content of PM2.5 in the air, including a PM10 collector 1 for collecting air samples, for separating fine particles in the air samples A PM2.5 cutter 2, a detection device for detecting the content of fine particulate matter in the air sample, a dryer 6 for removing moisture in the air sample, an air pump 7 for stabilizing the airflow, and for recycling A shunt device 8 of purified air, the detection device includes,

[0059] A laser scattering instrument 3, used to measure the scattering intensity of fine particles in air samples;

[0060] The laser scatterometer 3 includes an air channel 31, a laser module and a detection module,

[0061] The laser module includes a laser channel 321 for the passage of laser light, a laser source 322 for emitting laser light and a laser catcher 324 for absorbing laser light arranged at both ends of ...

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Abstract

The present invention discloses a fine particle matter measuring device for detecting the content of PM2.5 in the air, the fine particle matter measuring device includes a PM10 collector for collecting an air sample, a PM2.5 cutter for separating fine particulate matters in the air sample, a detecting device for detecting the content of the fine particulate matters in the air sample, and an air pump for stabilizing the air flow, the detecting device comprises a laser light scattering apparatus, a photoemission detector, and a signal processor, the fine particulate matter measuring device is simple, reliable, low in price , and apparatus-saving, and the present invention also discloses a measuring method using the fine particle matter measuring device.

Description

technical field [0001] The invention relates to a fine particle measuring device, in particular to a fine particle measuring device and a measuring method thereof. Background technique [0002] Because fine particles are very harmful to human health, especially particles smaller than 2.5 microns, PM2.5 has a relatively small volume and a large specific surface area, so it is easy to absorb toxic substances, and these particles can easily reach the lungs Deep in the head, thus causing various lung diseases, for this reason the country has issued a newly revised "Ambient Air Quality" standard. The new standard increases the concentration limit detection standard of PM2.5. Therefore, there is an urgent need for a simple, reliable and inexpensive PM2.5 real-time measurement device. [0003] The most classic method of measuring PM2.5 is the filter membrane method invented in the 1950s. This method only requires a PM2.5 cutting head, a pump, a membrane holder and its filter memb...

Claims

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Application Information

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IPC IPC(8): G01N15/06
Inventor 贺竞人
Owner YUANTAI AUTOMATION TECH SUZHOU
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