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A miniature, high precision conductivity and temperature sensor system for ocean monitoring

A miniature, high precision conductivity and temperature sensor system for ocean monitoring
A miniature, high precision conductivity and temperature sensor system for ocean monitoring
A miniature high precision conductivity and temperature (CT) sensor system has been developed for ocean salinity monitoring. The CT sensor is manufactured using micro fabrication technology. A novel seven-electrode conductivity cell has been developed which has no field leakage. This is combined with a platinum resistor temperature bridge to produce an integrated CT sensor. A generic impedance measurement circuit has been developed, with three-parameter sine fitting algorithm. It has a 1 month battery life at 10 s sampling interval. Calibration results show that the initial CT accuracies are ±0.03 mS/cm and ±0.01°C, respectively. Testing of the CT sensor has been performed in the north Atlantic and revealed drift in sensor readings after five weeks of operation.
calibration, conductivity, electrodes, resistors, temperature measurement, temperature sensors, voltage measurement, conductivity sensor, low-power electronics, measurement system, ocean salinity, temperature sensor
1530-437X
3246-3252
Huang, Xi
5d5680e9-fb83-4a90-9719-9dcef1c9d380
Pascal, Robin W.
3b2e2a38-334f-430f-b110-253a0a835a07
Chamberlain, Katie
744c09e7-6cc9-4f14-87a1-81909f019daa
Banks, Christopher J.
5d65ec1e-ed5f-48fc-9b05-3e46f24c35dc
Mowlem, Matthew
6f633ca2-298f-48ee-a025-ce52dd62124f
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
Huang, Xi
5d5680e9-fb83-4a90-9719-9dcef1c9d380
Pascal, Robin W.
3b2e2a38-334f-430f-b110-253a0a835a07
Chamberlain, Katie
744c09e7-6cc9-4f14-87a1-81909f019daa
Banks, Christopher J.
5d65ec1e-ed5f-48fc-9b05-3e46f24c35dc
Mowlem, Matthew
6f633ca2-298f-48ee-a025-ce52dd62124f
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174

Huang, Xi, Pascal, Robin W., Chamberlain, Katie, Banks, Christopher J., Mowlem, Matthew and Morgan, Hywel (2011) A miniature, high precision conductivity and temperature sensor system for ocean monitoring. IEEE Sensors Journal, 11 (12), 3246-3252. (doi:10.1109/JSEN.2011.2149516).

Record type: Article

Abstract

A miniature high precision conductivity and temperature (CT) sensor system has been developed for ocean salinity monitoring. The CT sensor is manufactured using micro fabrication technology. A novel seven-electrode conductivity cell has been developed which has no field leakage. This is combined with a platinum resistor temperature bridge to produce an integrated CT sensor. A generic impedance measurement circuit has been developed, with three-parameter sine fitting algorithm. It has a 1 month battery life at 10 s sampling interval. Calibration results show that the initial CT accuracies are ±0.03 mS/cm and ±0.01°C, respectively. Testing of the CT sensor has been performed in the north Atlantic and revealed drift in sensor readings after five weeks of operation.

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More information

Published date: December 2011
Keywords: calibration, conductivity, electrodes, resistors, temperature measurement, temperature sensors, voltage measurement, conductivity sensor, low-power electronics, measurement system, ocean salinity, temperature sensor
Organisations: Electronics & Computer Science, Ocean Technology and Engineering, Marine Physics and Ocean Climate

Identifiers

Local EPrints ID: 208141
URI: https://eprints.soton.ac.uk/id/eprint/208141
ISSN: 1530-437X
PURE UUID: 944a2e45-3292-4858-8cd2-47f8c0d35b85
ORCID for Hywel Morgan: ORCID iD orcid.org/0000-0003-4850-5676

Catalogue record

Date deposited: 16 Jan 2012 14:50
Last modified: 07 Aug 2019 00:43

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Contributors

Author: Xi Huang
Author: Robin W. Pascal
Author: Katie Chamberlain
Author: Christopher J. Banks
Author: Matthew Mowlem
Author: Hywel Morgan ORCID iD

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