Long optical path sea water absorption coefficient measuring device and working method thereof

Abstract

The invention relates to a long optical path sea water absorption coefficient measuring device and a working method thereof. The device comprises a control and data acquisition module (1), a long optical path field measurement module (2), a cleaning and laboratory measurement module (3), wherein the control and data acquisition module (1) is respectively connected with the long optical path field measurement module (2) and the cleaning and laboratory measurement module (3). The working method of the long optical path sea water absorption coefficient measuring device comprises a cleaning mode, a field in-site measurement mode and a laboratory measurement mode. The invention has simple structure, simple and convenient operation as well as low power consumption, and can meet the application demands of ultraviolet band 200-400nm spectral analysis and high-sensitivity measurement need in sea water absorption coefficient measurement.

Description

technical field [0001] The invention relates to the measurement of inherent optical properties of seawater, in particular to a long optical path seawater absorption coefficient measurement device and its working method. Background technique [0002] Seawater absorption coefficient is an extremely important and basic parameter in the fields of ocean optics, bio-optics, and satellite remote sensing. For the current measurement of seawater absorption coefficient, the ac-9 or ac-s of WETLabs company is generally used in the in-situ environment. Take measurements. In the current application environment, there are only two aspects of ac-9 or ac-s measurement of seawater absorption coefficient that cannot meet the application needs: First, ac-9 only has nine discrete measurement bands (412, 440, 488, 512, 530, 555, 650, 676, 715nm), the measurement spectrum range of ac-s is 400-730nm, which cannot meet the needs of spectral analysis in the ultraviolet band (200-400nm); the second ...

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Problems solved by technology

However, the current long optical path detection cell based on TeflonAF2400 capillary has greatly improved the detection optical path, but due to the small aperture of the liquid core waveguide itself (about a few hundred microns) and the limitations of the optical-liquid coupling method used, resulting in This type of long optical path sample cell has the problem of small injection aperture, so it cannot be applied to the field of seawater absorption coefficient measurement at all.

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