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Citadel CT-EK

Product Name:Citadel CT-EK
Year of Initial Development:1997
Weight in air [kg]:0.65
Weight in water {kg}:
Diameter [mm]:5.2
Length [mm]:46
Housing material:
Max. cable length [m]:
Min. operating power [V]:
Max. operating power [V]:
Battery type:N/A
Battery duration [hr]:0
Max. depth [m]:7000
Max. pressure [bar]:
Operating temperature: min. [°C]:
Operating temperature: max. [°C]:
Pressure, temperature and conductivity sensor 
Pressure sensor:
Type of pressure sensor:
Resolution of pressure [% FS]:
Uncertainty of pressure [% FS]:
Temperature sensor:
Type of temperature sensor:
Min. temperature [°C]:-2
Max. temperature [°C]:35
Resolution of temperature [°C]:0.0001
Uncertainty of temperature [°C]:0.05
Conductivity sensor:
Type of conductivity sensor:
Max. conductivity [S/m]:7
Resolution of conductivity [10^-3 S/m]:0.01
Uncertainty of conductivity [10^-3 S/m]:2
Min. depth increment [m]:0
Min. time increment [s]:0.55
Max. salinity [psu]:42
Resolution of salinity [psu]:0.002
Uncertainty of salinity [psu]:
Min. sound velocity [m/s]:1400
Max. sound velocity [m/s]:1608
Resolution of sound velocity [m/s]:0.01
Uncertainty of sound velocity [m/s]:
Additonal sensors 
Standard sensor:Conductivity; Temperature
No. of additional sensors:0
Dissolved oxygen:
Dissolved oxygen sensor type:
pH :
pH sensor type:
ORP sensor type:
Fluorescense sensor type:
Cholophyll sensor type :
PAR sensor type :
Light transmission:
Light transmission sensor type :
Optical backscatter :
Optical backscatter sensor type:
Hydrocarbones :
Hydrocarbones sensor type:
Current sensor:
Current sensor type:
Turbidity :
Turbidity sensor type :
H2S :
H2S sensor type :
Redox :
Redox sensor type:
Other optional sensors:None
Data and connectivity 
External recorder required:Y
Direct data reading:
Internal memory:
Internal Memory [MB]:
Type of internal memory:
Max. number of samples for self-recording [10^3]:
Dedicated surface data logger:Y
Dedicated sub-surface data logger:N
Telemetry link to remote location:Y
Software specifications 
Software name:CTD-Pro / Post
Graphical presentation:Y
Raw data editing:N
Re-computation with raw data:Y
CTD Probe controller:Y
Recording with third party software:Y
Operation characteristics 
Data display on dedicated hardware:N
Display of analogue data:Y
Method of first recording:PC computer
More information 
Distinguishable features :must be calibrated to account for the disturbance of field from the EIC due to the customer housing, Dimensions and wieghts gvien for optional 500 m Delrin housing. This is an OEM sensor available in 500 m and 7000 m versions. Salinity and Speed of Sound are calculated values whose errors are functions of the forward proproagatoin of conductivity and temperature measurement errors.

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