Development of High Perfomance CTD sensor

High performance CTD sensor for mooring system and profile measurement was developed. Circuit performance for realizing the target resolution (water temperature 0.0001 degC, conductivity 0.00001 S/m) was obtained by developing sensor signal processing method and circuit configuration. We developed a...

Full description

Saved in:
Bibliographic Details
Published inJAMSTEC REPORT OF RESEARCH AND DEVELOPMENT Vol. 26; pp. 36 - 53
Main Authors Takahashi, Yukio, Watari, Kensuke, Ishihara, Yasuhisa
Format Journal Article
LanguageEnglish
Japanese
Published Yokohama Japan Science and Technology Agency 2018
Subjects
Castings
Conductivity sensors
Platinum
Sensors
Water temperature
Online AccessGet full text

Cover

More Information
Summary:High performance CTD sensor for mooring system and profile measurement was developed. Circuit performance for realizing the target resolution (water temperature 0.0001 degC, conductivity 0.00001 S/m) was obtained by developing sensor signal processing method and circuit configuration. We developed a thermistor probe which has low depth dependence and a response time sufficiently short for profiling measurements. We also developed a conductivity sensor device of platinum electrode with high performance and repeatability. The new sensors have been calibrated and repeatedly tested in situ ((m-)TRITON buoy measurement and CTD castings) to improve the quality. As a result, the target performance (initial precision 0.002 degC, 0.0003 S/m, and time drift characteristics to withstand long-term mooring) comparable to SBE sensor (SBE37), was obtained.
ISSN:1880-1153
2186-358X
DOI:10.5918/jamstecr.26.36