Fine particle measuring device and measuring method

A fine particle and measuring device technology, 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, and achieve the effect of eliminating influence and measuring accurately

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

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Problems solved by technology

Usually the laser scattering method is only sensitive to particles above 0.3 microns, and t

Method used

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

Examples

Experimental program
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Example Embodiment

[0042] Example 1

[0043] See figure 1 , figure 2 as well as image 3 , As shown in the legend, a fine particulate matter measuring device used to detect the content of PM2.5 in the air, including a PM10 collector used to collect air samples 1, used to separate the fine particulate matter in the air sample A PM2.5 cutter 2. A detection device for detecting the content of fine particles in an air sample, a filter for collecting fine particles in an air sample, a dryer for removing moisture in an air sample 7, a For a gas pump 8 for stabilizing the air flow and a diverter device 9 for recycling the purified residual gas, the detection device includes:

[0044] A 1# laser scattering sensor 3, used to measure the scattering intensity of fine particles in air samples;

[0045] A 2# laser scattering sensor 4, used to measure the scattering intensity of fine particles in air samples;

[0046] A signal processor 5 for converting the scattering intensity of the fine particles into a concentr...

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Abstract

The invention discloses a fine particle measuring device for detecting PM 2.5 content in the air. The measuring device comprises a PM10 collector for collecting an air sample, a PM 2.5 cutter for separating fine particles of the air sample, a detector for detecting the fine particle content of the air sample, and an air pump for stabilizing an air current. The measuring device generates small measuring errors and can be monitored in real time. The invention also provides a measuring method for fine particles.

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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