Method for measuring mass concentration of particulate matter

A technology of mass concentration and particulate matter, applied in the direction of measuring devices, particle suspension analysis, suspension and porous material analysis, to achieve the effect of ensuring consistency and reducing error factors

Active Publication Date: 2014-10-29
QINGDAO ZHONGRUI INTELLIGENT INSTR
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Problems solved by technology

[0005] Other methods such as opacity method and light transmission method also have the above problems. At present, there is no method that can not only avoid the influence of environmental particles, frequently calibrate the parameter values, but also read the particle concentration value online in real time.

Method used

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  • Method for measuring mass concentration of particulate matter

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Embodiment Construction

[0017] Such as figure 1 As shown in the method for measuring the mass concentration of particulate matter, the processor 13 controls the sampling pump 8 to make the air flow enter from the particulate matter collection unit, collects atmospheric particulate matter information and determines whether the instrument needs to be calibrated, and if calibration is required, the beta-ray calibration module is activated , Calibrate the parameter values ​​of the light scattering measurement module, and turn on the light scattering measurement module after the parameter calibration is completed; if calibration is not required, directly measure the light scattering measurement module, and the measurement result is displayed by the input and output module 14; input and output The module 14, the atmospheric pressure sensor 16, and the temperature and humidity sensor 15 are connected to the processor 13; the particulate matter collection unit includes a PM2.5 / PM10 cutter 1, a high-efficiency ...

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Abstract

The invention relates to a method for measuring the mass concentration of a particulate matter. A processor controls a sampling pump so that airflow enters from a particulate matter collecting unit, atmospheric particulate matter information is acquired, whether an instrument needs to be calibrated is judged, a beta-ray calibration module is started to calibrate the parameter values of a light scattering measurement module if calibration is needed, and the light scattering measurement module is turned on after the parameters are calibrated; and if calibration is not needed, the light scattering measurement module directly carries out measurement. By combining a light scattering method for measuring the concentration of the particulate matter with a beta-ray method, the measurement is accurate and data are directly read on line in real time; the beta-ray calibration module and the light scattering measurement module share one gas path, so as to ensure that various conditions in the calibration process are consistent and reduce error factors; and the parameters of the light scattering measurement module are calibrated by using the beta-ray calibration module when the measurement environment is changed, and the light scattering measurement module is separately utilized to measure the concentration of the particulate matter when the measurement environment is not changed.

Description

Technical field [0001] The invention relates to a method for measuring the mass concentration of particulate matter, and belongs to the field of particulate matter concentration measurement. Background technique [0002] Due to the serious environmental pollution caused by pollution sources such as industrial boilers, power plant boilers, and industrial kilns, countries all over the world have conducted in-depth research and control on this, which requires the detection of the concentration of particulate matter and dust emitted by them. At present, the commonly used detection methods include light scattering method, β-ray absorption method, opacity method, light transmission method and so on. [0003] The principle of the light scattering method is: the light beam from the light source irradiates a certain space (measurement area) containing the particles to be measured, so that scattering occurs. The scattered light is converted into an electrical signal by a photoelectric receiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
Inventor 王桐霍昱何春雷曹莉
Owner QINGDAO ZHONGRUI INTELLIGENT INSTR
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