Development of seven-electrode conductivity sensor for seawater

Yushang Wu; Keke Zhang; Xiao Fu; Shizhe Chen; Bo Wang; Qiang Zhao; Ye Liu; Xianglong Yang; Sen Wang

doi:10.1117/12.2592272

26 January 2021 Development of seven-electrode conductivity sensor for seawater

Yushang Wu, Keke Zhang, Xiao Fu, Shizhe Chen, Bo Wang, Qiang Zhao, Ye Liu, Xianglong Yang, Sen Wang

Proceedings Volume 11767, 2020 International Conference on Optoelectronic Materials and Devices; 117671H (2021) https://doi.org/10.1117/12.2592272
Event: 2020 International Conference on Optoelectronic Materials and Devices, 2020, Guangzhou, China

Abstract

Seawater salinity is one of the basic elements of marine hydrological observation, and seawater conductivity measurement is an important means of salinity measurement. In order to improve the measurement accuracy of seawater conductivity sensor, a seven-electrode conductivity sensor is developed by using lock-in amplifier technology, which can measure the seawater conductivity by detecting the voltage and current signals in the strong noise environment. The comparison experiment was carried out by using seven-electrode conductivity sensor and seabird CTD sensor SBE 37-SI, the indication error of conductivity measurement is within ±0.0003s/m, which can meet the needs of high-precision measurement of seawater conductivity.

Citation Download Citation

Yushang Wu, Keke Zhang, Xiao Fu, Shizhe Chen, Bo Wang, Qiang Zhao, Ye Liu, Xianglong Yang, and Sen Wang "Development of seven-electrode conductivity sensor for seawater", Proc. SPIE 11767, 2020 International Conference on Optoelectronic Materials and Devices, 117671H (26 January 2021); https://doi.org/10.1117/12.2592272

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