Quick-response high-precision light scattering turbidimeter measuring device

Abstract

The invention provides a quick-response high-precision light scattering turbidimeter measuring device. The device comprises a flexible cavity, a shading film layer covering the inner wall of the flexible cavity, a supporting structure arranged at the top of the flexible cavity, a vent hole formed in the bottom of the flexible cavity, a supporting plate arranged at the bottom of the flexible cavity, and a light scattering turbidimeter arranged on the supporting plate of the flexible cavity. When measurement is started, air in the cavity is emptied through the vent hole, then aerosol to be measured is injected, and the particle characteristics of the aerosol are measured through the light scattering turbidimeter. Measurement is conducted in the closed cavity, the particle size measurement range is wide, and compared with a rigid cavity which is difficult to exhaust, the flexible cavity can exhaust air through the volume change, the cavity machining cost is reduced, a large amount of gasis saved and the gas exchange speed is increased, and the measurement efficiency is improved. In addition, the flexible volume is expanded conveniently, diffuse scattering of the cavity wall is reduced due to the large volume and the signal-to-noise ratio of measurement is improved.

Description

Technical field [0001] The invention relates to the field of optics and measurement, in particular to a fast-responding high-precision light scattering turbidimeter measuring device. Background technique [0002] Aerosol is a multi-phase system composed of the atmosphere and solid and liquid particles suspended in it. It refers to a stable, low sedimentation velocity suspended in the earth’s atmosphere, and the scale ranges from 0.001 μm to tens of μm. A mixture of molecular clusters, liquid or solid particles. Aerosols can absorb and scatter solar radiation, change cloud radiation characteristics and life cycle, directly and indirectly affect the energy budget and water cycle of the earth-atmosphere system, and are also important factors affecting the earth's environment. [0003] When determining the climate effect of aerosols, it is necessary to measure the chemical composition of aerosols, particle size distribution, and its temporal and spatial distribution and other particle...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a fast-response high-precision light-scattering turbidimeter measuring device, which solves the problem of small particle size range and waste of gas when measuring aerosol particle characteristics in the prior art. Defects of slow ventilation and high cost

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