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

Summary

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.



ManufacturerSeabird
ModelSBE21 with SBE38
Serial No.n/a
Typethermosalinograph
SENSOR-Link↪





Contacts


NameInstitutionRole
Mario HoppmannAlfred Wegener Institute, Helmholtz Centre for Polar and Marine ResearchEngineer In Charge
Sandra TippenhauerAlfred Wegener Institute, Helmholtz Centre for Polar and Marine ResearchEngineer In Charge
Alfred Wegener Institute for Polar and Marine ResearchAlfred Wegener Institute, Helmholtz Centre for Polar and Marine ResearchOwner


Components

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.

Subdevices

TSK1


NameModelSerial NumberSENSOR-
Link
Temperature Sensor SBE38SBE380118↪
Thermosalinograph SBE21SBE213191↪


TSK2


NameModelSerial NumberSENSOR-
Link
Temperature Sensor SBE38SBE380118↪
Thermosalinograph SBE21SBE213271↪


Position


Infono xyz-position given, device located in box keel


Data logging, storage and archiving

Logged parameters

TSK1


ParameterSensor Output TypeUnit
conductivity keelconductivitymS/cm
salinity keelsalinityPSU
sound velocity keelsound velocitym/s
temperature internal keelwater temperature°C



TSK2


ParameterSensor Output TypeUnit
conductivity bowconductivitymS/cm
salinity bowsalinityPSU
sound velocity bowsound velocitym/s
temperature internal bowwater temperature°C



Central geographical ship's position and time standard

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

Rawdata storage on board 

Data storage in DShip system.

Dship

Uncorrected measurement data.

TSK1

|| 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 ||

TSK2

|| 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 ||

Data archiving on land 

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) ||

Documentation