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Product Name:CastAway-CTD
Description:The CastAway-CTD® is first handheld castable instrument that provides instantaneous profiles of temperature, salinity, and sound speed. Designed for coastal profiling, it incorporates a 6-electrode conductivity cell, coupled with a fast response thermistor to provide accurate, high-resolution data to 100m.
Year of Initial Development:2010
Weight in air [kg]:0.45
Weight in water {kg}:
Diameter [mm]:8.4
Length [mm]:20.3
Housing material:
Max. cable length [m]:
Min. operating power [V]:
Max. operating power [V]:
Battery type:AA Alkaline
Battery duration [hr]:40
Max. depth [m]:100
Max. pressure [bar]:100
Operating temperature: min. [°C]:
Operating temperature: max. [°C]:
Pressure, temperature and conductivity sensor 
Pressure sensor:
Type of pressure sensor:
Resolution of pressure [% FS]:0.01
Uncertainty of pressure [% FS]:0.25
Accuracy of pressure sensor:
Temperature sensor:
Type of temperature sensor:
Min. temperature [°C]:-5
Max. temperature [°C]:45
Resolution of temperature [°C]:0.01
Uncertainty of temperature [°C]:0.05
Accuracy of temperature measurement:
Conductivity sensor:
Type of conductivity sensor:
Max. conductivity [S/m]:10
Resolution of conductivity [10^-3 S/m]:0.001
Uncertainty of conductivity [10^-3 S/m]:0.05
Accuracy of conductivity measurement:
Min. depth increment [m]:0.01
Min. time increment [s]:0.2
Resolution of salinity [psu]:0.01
Uncertainty of salinity [psu]:0.1
Min. sound velocity [m/s]:1400
Max. sound velocity [m/s]:1730
Resolution of sound velocity [m/s]:0.01
Uncertainty of sound velocity [m/s]:0.15
Additonal sensors 
Standard sensor:Measures conductivity, temperature, pressure and includes GPS. Also, calculated salinity, sound speed, density, depth and specific conductivity.
No. of additional sensors:
Description of additional sensors:
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]:750
Dedicated surface data logger:N
Dedicated sub-surface data logger:Y
Telemetry link to remote location:Y
Software specifications 
Software name:CastAway - CTD
Graphical presentation:Y
Raw data editing:Y
Re-computation with raw data:Y
CTD Probe controller:Y
Recording with third party software:N
Operation characteristics 
Data display on dedicated hardware:Y
Display of analogue data:Y
Method of first recording:digital
More information 
Distinguishable features :5Hz response time; 5Hz sampling rate; 6 electrode flow through cell design

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Supplier Information
  • SonTek

  • 9940 Summers Ridge Rd
  • 92121-3091 San Diego
  • California
  • United States of America



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