A dust concentration measuring device and method

A dust concentration and measurement device technology, which is applied in the direction of measurement devices, suspension and porous material analysis, particle suspension analysis, etc., can solve the problems of concentration measurement error, system complexity, large difference between light intensity and scattered light intensity, etc. , to achieve fast response, high sensitivity, simple and compact optical path system
CN104374677BActive Publication Date: 2017-04-19NANJING INST OF MEASUREMENT & TESTING TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING INST OF MEASUREMENT & TESTING TECH
Publication Date
2017-04-19

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Abstract

The invention discloses a concentration measuring device and method for dust in large diameter range. Aiming at the shortcoming that scattering integration method in the prior art is not applicable when the particle size is smaller than 10 microns, the measuring device uses a multistep neutral density filter to attenuate transmission light and scattered light to a same light intensity level, realizes simultaneous shooting of transmission light and scattered light in a measurement system of a single digital area-array camera, and has the advantages of high sensitivity, fast response and simple and compact optical system. According to the obtained information of scattered light and transmission light, the distribution of particle size can be acquired; with the known particle size distribution, a method combined scattered light with scattering integration can be used to measure dust concentration of micron level, and a method combined transmission light with light extinction can be used to realize the measurement of dust concentration of submicron and nanometer levels. The invention successfully realizes the measurement of dust concentration of micron, submicron and nanometer levels, covers large particle size range, and has great market advantage.
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Description

technical field

[0001] The present invention relates to a dust concentration measuring device and method, in particular to a dust concentration measuring device and method, which realizes simultaneous measurement of transmitted light and forward small-angle scattered light in one measuring device, and has a wide measurement range, covering nanoscale and micron-sized dust particles. Background technique

[0002] One of the main hazards of dust is air pollution, and the second is explosion hazards. In some occasions, dust can also affect production. For example, dust will reduce the power generation efficiency of solar panels, resulting in hundreds of millions of yuan in indirect losses every year for solar photovoltaic power generation projects in my country. Therefore, dust concentration measurement is of great significance in energy research, environmental protection, atmospheric science and other fields. At present, a variety of dust concentration measurement technologies ...

Claims

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