Development and application of seven-electrode temperature and salinity sensor

Keke Zhang; Haidong Zhang; Yushang Wu; Yingdong Yang; Xianglong Yang; Xueyong Zheng

doi:10.1117/12.3014807

4 March 2024 Development and application of seven-electrode temperature and salinity sensor

Keke Zhang, Haidong Zhang, Yushang Wu, Yingdong Yang, Xianglong Yang, Xueyong Zheng

Proceedings Volume 12981, Ninth International Symposium on Sensors, Mechatronics, and Automation System (ISSMAS 2023); 129810N (2024) https://doi.org/10.1117/12.3014807
Event: 9th International Symposium on Sensors, Mechatronics, and Automation (ISSMAS 2023), 2023, Nanjing, China

Abstract

The temperature and salinity of seawater are essential physical parameters for marine science. The measurement of conductivity is an important means of salinity measurement. In this article, seven electrodes are used to design a temperature and salinity sensor. The sensor detects voltage signal and current signal in strong marine noise environments using lock-in amplifier technology to improve the measurement accuracy of seawater conductivity. A seven-electrode temperature and salinity sensor and a Seabird SBE37-SI temperature and salinity sensor are used for laboratory comparison, the temperature measurement error and the conductivity measurement error are within ±0.005°C and ±0.0003s/m. The temperature and salinity sensor is installed on an ocean buoy, and offshore testing is carried out. The test data shows that the sensor's measurement data is accurate and reliable, and can be used to measure the temperature, conductivity, and salinity of seawater.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Keke Zhang, Haidong Zhang, Yushang Wu, Yingdong Yang, Xianglong Yang, and Xueyong Zheng "Development and application of seven-electrode temperature and salinity sensor", Proc. SPIE 12981, Ninth International Symposium on Sensors, Mechatronics, and Automation System (ISSMAS 2023), 129810N (4 March 2024); https://doi.org/10.1117/12.3014807

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