Development of an In Situ Self-Calibrating Salinometer for Deep Sea Applications

doi:10.1109/JSEN.2025.3637234

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	Development of an In Situ Self-Calibrating Salinometer for Deep Sea Applications
	Pang, Bo; Huang, Xi
	2026-01-15
发表期刊	IEEE SENSORS JOURNAL
ISSN	1530-437X
卷号	26 期号:2 页码:3155-3162
摘要	Salinity is a key parameter in deep-sea monitoring, yet conventional conductivity-temperature-depth (CTD) systems often suffer from long-term drift due to pressure-induced deformation and lack effective in situ calibration. This study presents an in situ self-calibrating salinometer designed for reliable operation under ultrahighpressure conditions. The system leverages the thermally stable deep-sea environment and performs periodic calibration using preloaded standard seawater solutions. Featuring a lab-on-a-chip (LoC) fluidic module, a pump, two normallyclosed (NC) valves, one normally-open (NO) valve, and passive pressure compensation, the valve setup maintains at least one open flow path at all times, enabling constant pressure balance and protecting system integrity. Laboratory tests confirmed pressure resistance up to 126.5MPa and measurement accuracy within +/- 0.003PSU. Field deployments at 1300 and 4500m yielded errors of 0.0198 and 0.097PSU, respectively, mainly due to limited deployment durations and thermal instability. Despite these constraints, the system maintained structural integrity and stable performance, demonstrating suitability for long-term deep-sea salinity monitoring.
关键词	Temperature measurement Salinity (geophysical) Conductivity Sea measurements Valves Temperature sensors Conductivity measurement Calibration Standards Sensors Deep-sea measurement in situ calibration pressure compensation salinity sensor
DOI	10.1109/JSEN.2025.3637234
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Instruments & Instrumentation ; Physics
WOS类目	Engineering, Electrical & Electronic ; Instruments & Instrumentation ; Physics, Applied
WOS记录号	WOS:001662971800017
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/42872
专题	中国科学院计算技术研究所
通讯作者	Pang, Bo
作者单位	Chinese Acad Sci, Inst Comp Technol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Pang, Bo,Huang, Xi. Development of an In Situ Self-Calibrating Salinometer for Deep Sea Applications[J]. IEEE SENSORS JOURNAL,2026,26(2):3155-3162.
APA	Pang, Bo,&Huang, Xi.(2026).Development of an In Situ Self-Calibrating Salinometer for Deep Sea Applications.IEEE SENSORS JOURNAL,26(2),3155-3162.
MLA	Pang, Bo,et al."Development of an In Situ Self-Calibrating Salinometer for Deep Sea Applications".IEEE SENSORS JOURNAL 26.2(2026):3155-3162.