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Free-falling Optical Profiler

Product Name:Free-falling Optical Profiler
Description:The Free-Falling Optical Profiler, or Profiler II, measures the color of the ocean and how it varies spectrally throughout the euphotic zone. The Profiler II is used by the US, Canada, UK, France, Italy, Australia, Brazil, China, Taiwan, Korea, Japan, India, Germany and Israel to provide calibration and validation data for ocean color satellites. It is used operationally by naval research groups to provide observations of the optical properties of the ocean for anti-submarine warfare, mine countermeasures and laser LIDAR bathymetry. The Profiler II is also the workhorse sensor suite for the global optical oceanography community who investigate basic fundamental biological and physical processes that involve light in the ocean.
Year of Initial Development:
Weight in air [kg]:8.2
Weight in water {kg}:
Diameter [mm]:
Length [mm]:100
Housing material:
Max. cable length [m]:
Min. operating power [V]:
Max. operating power [V]:
Battery type:
Battery duration [hr]:
Max. depth [m]:220
Max. pressure [bar]:
Operating temperature: min. [°C]:
Operating temperature: max. [°C]:
Pressure, temperature and conductivity sensor 
Pressure sensor:Y, Optional
Type of pressure sensor:
Resolution of pressure [% FS]:
Uncertainty of pressure [% FS]:
Temperature sensor:Y, Optional
Type of temperature sensor:
Min. temperature [°C]:-2.5
Max. temperature [°C]:40
Resolution of temperature [°C]:
Uncertainty of temperature [°C]:
Conductivity sensor:
Type of conductivity sensor:
Max. conductivity [S/m]:
Resolution of conductivity [10^-3 S/m]:
Uncertainty of conductivity [10^-3 S/m]:
Min. depth increment [m]:
Min. time increment [s]:
Max. salinity [psu]:
Resolution of salinity [psu]:
Uncertainty of salinity [psu]:
Min. sound velocity [m/s]:
Max. sound velocity [m/s]:
Resolution of sound velocity [m/s]:
Uncertainty of sound velocity [m/s]:
Additonal sensors 
Standard sensor:Pressure, External Temperature, Tilt
No. of additional sensors:4
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:WET Labs ECO Puck: Fluorescence, Backscattering, Turbidity
Data and connectivity 
External recorder required:Y
Direct data reading:Y
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:
Software specifications 
Software name:ProSoft
Graphical presentation:Y
Raw data editing:Y
Re-computation with raw data:Y
CTD Probe controller:
Recording with third party software:N
Operation characteristics 
Data display on dedicated hardware:Y
Display of analogue data:Y
Method of first recording:
More information 
Distinguishable features :• Various deployment configurations - Free fall, frame mounted, buoy mode • Multiple radiometer options - multi, hyperspectral or combinations • Full ancillary suite - tilt, temperature, conductivity, depth, ECO Puck series sensors • Easily deployed to avoid ship shadow anomalies • Data logging and processing software included

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