Page History

Thermosalinograph Keel 1 and Keel 2 data stored in data acquisition system DShip are uncorrected measurement data.

The thermosalinograph is an instrument used to accurately determine sea surface conductivity and temperature. The remote temperature sensor SBE38 is integrated with the SBE21 Thermosalinograph.

Both thermosalinographs keel 1 and keel 2 consist of SBE21, external thermometer SBE38, NMEA interface box and a pipe system with a flow meter (ABB Hygienic Master 300). The system is located in the box keel. The water inflow is in about 11 m depending on the ships draft. Several devices of type SBE21 and SBE38 exist. They are used in rotation and are calibrated regularly. Find below the devices which are currently installed.

UTC time is supplied via NMEA telegram.
Geographical position is supplied via NMEA telegram.

Data storage in DShip system.

Uncorrected measurement data.

|| Device name | thermosalinometer keel || 
|| Parameters | conductivity keel S/m \[S/m\], salinity keel \[psu\], soundvelocity external \[m/s\], temperature keel \[°C\], temperature keel internal \[°C\], TSG_KEEL.SBE21.Sentence ||

|| Device name | TSK2 || 
|| Parameters |  ConductivityHz \[Hz\], Conductivity Keel S/m \[S/m\], ConductivityKHz \[kHz\], Conductivity ms \[ms/cm\], density \[kg/m3\], FirstVoltage \[V\], salinity Keel 2 \[psu\], SBE \[Hz\], SecondVoltage \[Hz\], Sentence, soundvelocity external \[m/s\], sound velocity Keel \[m/s\], TemperatureHz \[Hz\], temperature Keel \[°C\], temperature Keel internal \[°C\], TSK2.SBE21.SBE21 ||

Shortly after the cruise the uncorrected thermosalinograph measurement data are available at the DShip onshore system https://dship.awi.de/. As soon as a post-cruise calibration was performed, the data are processed and uploaded in [PANGAEA|http://www.pangaea.de/search?l&q=polarstern+thermosalinograph].

|| File format(s) | *.txt || 
|| Calibration certificates | YES ||
|| Location of certificates | Fielax GmbH (calibration information in Epic processing reports) ||

• SBE21_thermosalinograph_brochure (Factsheet, 382 kB)
    
• SBE21_thermosalinograph_manual (User Manual, 4 MB)
    
• SBE38 reference sheet (Factsheet, 192 kB)