A Salinity–Temperature Sensor Based on Microwave Resonance Reflection

Bogucki, Darek J.; Snowdon, Tom; Doerr, Jennifer C.; Serafy, Joseph E.

doi:10.3390/s22155915

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A Salinity–Temperature Sensor Based on Microwave Resonance Reflection

2022
By Bogucki, Darek J. ; Snowdon, Tom ; Doerr, Jennifer C. ; ...
Source: Sensors, 22(15), 5915

[PDF-881.26 KB]

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Journal Title:

Sensors
Personal Author:

Bogucki, Darek J. ; Snowdon, Tom ; Doerr, Jennifer C. ; Serafy, Joseph E.

Bogucki, Darek J. ; Snowdon, Tom ; Doerr, Jennifer C. ; Serafy, Joseph E. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; SEFSC (Southeast Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; SEFSC (Southeast Fisheries Science Center) Less -
Description:

We developed and tested a microwave in situ salinity sensor (MiSSo) to simultaneously measure salinity and temperature within the same water sample over broad ranges of salinity (S) (3–50 psu) and temperature (T) (3–30 °C). Modern aquatic S sensors rely on measurements of conductivity (C) between a set of electrodes contained within a small volume of water. To determine water salt content or S, conductivity, or C, measurements must be augmented with concurrent T measurements from the same water volume. In practice, modern S sensors do not sample C and T within the same volume, resulting in the S determination characterized by measurement artifacts. These artifacts render processing vast amounts of available C and T data to derive S time-consuming and generally preclude automated processing. Our MiSSo approach eliminates the need for an additional T sensor, as it permits us to concurrently determine the sample S and T within the same water volume. Laboratory trials demonstrated the MiSSo accuracy of S and T measurements to be <0.1 psu and <0.1 °C, respectively, when using microwave reflections at 11 distinct frequencies. Each measurement took 0.1 μs. Our results demonstrate a new physical method that permits the accurate S and T determination within the same water volume.
Keywords:

[+]

Environmental Monitoring Water Salinization Water Temperature Analytical Chemistry Aquatic Salinity Measurements Aquatic Temperature Measurements Atomic And Molecular Physics, And Optics Biochemistry Electrical And Electronic Engineering Environmental Monitoring Instrumentation
Source:

Sensors, 22(15), 5915
DOI:

https://doi.org/10.3390/s22155915
Document Type:

Journal Article
Funding:

Grant no. 1333MF21PNFFN0036
License:

https://creativecommons.org/licenses/by/4.0/
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CC BY
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Submitted
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urn:sha256:dc45980efff9948a52e9fa08599a16193efa2cac9466d9b41e7e98d2b103bbc5
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https://repository.library.noaa.gov/view/noaa/48130/noaa_48130_DS1.pdf
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A Salinity–Temperature Sensor Based on Microwave Resonance Reflection

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