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Multi-channel PM2.5 monitor calibration device

A technology for calibrating devices and monitoring instruments, used in measurement devices, scientific instruments, analysis of suspensions and porous materials, etc., can solve the problems of repeated purging, low cost, etc. Effect

Inactive Publication Date: 2014-03-26
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a multi-channel PM 2.5 Monitor calibration device, the overall structure design of the device is reasonable, avoiding the problem of repeated purging of all pipelines in the existing calibration system, high detection accuracy and efficiency, low cost, simple operation, easy to popularize and use

Method used

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  • Multi-channel PM2.5 monitor calibration device

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Experimental program
Comparison scheme
Effect test

Embodiment

[0015] figure 1 An embodiment of the calibration system of the present invention is shown having eight channels: first channel 10, second channel 20, third channel 30, fourth channel 40, fifth channel 50, sixth channel 60, seventh channel 70 and 80 for the eighth channel.

[0016] The first channel 10 prepares aerosol particles with a particle size of 1.5±0.25 μm through the aerosol generator 1, enters the mixing box 103 and mixes with the clean air entering the mixing box 103 through 102, and dilutes the generated aerosol to 35 μg / m 3 , the diluted aerosol enters the public pipeline and diverts, and part of it passes through the PM 2.5 Monitor 5, after the monitor display is stable, read once per minute, read six sets of data, and measure PM 2.5 The other part of the average concentration of the aerosol passes through the front particle size spectrometer 7, the PM2.5 cutter 8 and the rear particle size spectrometer 9 in sequence. Read six sets of data and measure PM 2.5 T...

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Abstract

The invention discloses a multi-channel PM2.5 monitor calibration device which is characterized by comprising an aerosol generator, a mixing box, a PM2.5 monitor, a front particle spectrometer, a PM2.5 cutter, a rear particle spectrometer and purifiers I and II, which are connected in a thread form through pipelines, wherein the aerosol generator is connected with the mixing box; the PM2.5 monitor is connected with the purifier I; the front particle spectrometer and the rear particle spectrometer are connected to the two sides of the PM2.5 cutter respectively; the front particle spectrometer is mounted at an upstream pipeline of the PM2.5 cutter; the rear particle spectrometer is mounted at a downstream pipeline of the PM2.5 cutter; the rear particle spectrometer is connected with the purifier II. The device is high in detection accuracy and efficiency and easy to popularize and use.

Description

technical field [0001] The invention relates to a method for quickly and accurately calibrating PM 2.5 Multi-channel PM for monitors 2.5 Monitor calibration device. Background technique [0002] PM 2.5 Refers to particulate matter with a diameter less than or equal to 2.5 microns in the atmosphere, also known as particulate matter that can enter the lungs, and its formation is mainly related to man-made. GB3095-2012 "Ambient Air Quality Standards" added PM 2.5 Monitoring indicators. The Ministry of Environmental Protection requires that starting from 2012, PM monitoring should be carried out in Beijing-Tianjin-Hebei, Yangtze River Delta, Pearl River Delta and other key areas, as well as municipalities directly under the central government and provincial capitals. 2.5 By 2016, all parts of the country must monitor and evaluate ambient air PM in accordance with the above standards 2.5 concentration. [0003] At present, the domestic PM 2.5 The quality of the monitors i...

Claims

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Application Information

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IPC IPC(8): G01N15/06
Inventor 胡德栋张森
Owner QINGDAO UNIV OF SCI & TECH