Atmospheric environment salt fog concentration monitoring device and testing method

Abstract

The invention relates to an atmospheric environment salt fog concentration monitoring device and a testing method. The testing method specifically includes the following steps of S1, exposing a sensorpart of a corrosion monitoring probe in a corrosion environment to be detected; S2, measuring a liquid film impedance value of the surface of a sensor of the corrosion monitoring probe under a certain salt fog concentration; S3, adjusting the salt fog concentration, and measuring constant frequency impedance values of the sensor part of the corrosion monitoring probe under different salt particledeposition amount conditions; S4, establishing a corresponding relation curve between the salt fog concentration and the liquid film impedance value of the surface of the corrosion monitoring probe,carrying out exponential attenuation fitting on the change relation between the salt fog concentration and the impedance value, and obtaining a calculation relation between the impedance value of thecorrosion monitoring probe under the excitation of constant frequency alternating current signals and the environmental salt fog concentration. According to the atmospheric environment salt fog concentration monitoring device and the testing method, the purpose of measuring the salt fog concentration in real time is achieved by establishing the corresponding relation between the impedance value ofthe probe under the excitation of the constant frequency alternating current signals and the environmental salt fog content.

Description

technical field [0001] The invention relates to the field of atmospheric salt mist concentration monitoring, in particular to an atmospheric environment salt mist concentration monitoring device and a testing method. Background technique [0002] In the environment of high humidity and high salt spray, a thicker liquid film is easily formed on the surface of metals, etc., and the atmospheric corrosion reaction of metals in the presence of liquid films will change from chemical reactions to electrochemical reactions. Corrosion rates can increase rapidly, so monitoring of the salt mist level in the atmosphere is required. [0003] The traditional method requires manual sampling of the area to be tested for testing. The test is cumbersome, consumes a lot of manpower and material resources, and cannot monitor the concentration of salt spray in real time. Therefore, a long-term real-time monitoring method on site is urgently needed. Contents of the invention [0004] In order ...

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Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention proposes an atmospheric environment salt spray concentration monitoring device and testing method, which solves the problems of high manpower and material resources cost and cumbersome testing existing in the existing salt spray concentration measurement

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