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Citadel CTD-NV

Product Name:Citadel CTD-NV
Year of Initial Development:2005
Weight in air [kg]:3.9
Weight in water {kg}:
Diameter [mm]:8.3
Length [mm]:43
Housing material:
Max. cable length [m]:
Min. operating power [V]:
Max. operating power [V]:
Battery type:alkaline welded pack (option for customer fillable cells)
Battery duration [hr]:400
Max. depth [m]:7000
Max. pressure [bar]:700
Operating temperature: min. [°C]:
Operating temperature: max. [°C]:
Pressure, temperature and conductivity sensor 
Pressure sensor:
Type of pressure sensor:
Resolution of pressure [% FS]:0.001
Uncertainty of pressure [% FS]:0.05
Accuracy of pressure sensor:
Temperature sensor:
Type of temperature sensor:
Min. temperature [°C]:-5
Max. temperature [°C]:35
Resolution of temperature [°C]:0.0001
Uncertainty of temperature [°C]:0.005
Accuracy of temperature measurement:
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]:0.9
Accuracy of conductivity measurement:
Min. depth increment [m]:0
Min. time increment [s]:0.067
Resolution of salinity [psu]:0.0002
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; Pressure
No. of additional sensors:5
Description of additional sensors:Altimeter; Fluorescence; Turbidity; Transmissometer; Dissolved Oxygen; pH; PAR
Data and connectivity 
External recorder required:N
Direct data reading:
Internal memory:
Internal Memory [MB]:
Type of internal memory:
Max. number of samples for self-recording [10^3]:5477
Dedicated surface data logger:N
Dedicated sub-surface data logger:Y
Telemetry link to remote location:N
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:internal memory
More information 
Distinguishable features :no proximity effects when mounted close to other equipment; clean in field without effecting calibration. Weights and dimensions for 500 m version with batteries and external sensor interface. Salinity and Speed of Sound are calculated values whose error depemed on forward propagation of measurement error in conductivity, temperature and pressure.

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