CTD Integration

A CTD measures Conductivity, Temperature, and Depth. Despite the name, all CTDs actually measure pressure, which is not quite the same thing as depth. The relationship between pressure and depth is a complex one involving water density and compressibility as well as the strength of the local gravity field. The CTD data can be used to calculate salinity, density, sound velocity, and other parameters of interest. The term CTD is often used today to describe a package that includes the actual CTD as well as auxiliary sensors to measure other parameters (such as dissolved oxygen, pH, turbidity, fluorometer, altimeter, etc.) and a water sampler to collect water samples for later analysis in the lab.

A Profiling CTD measures water parameters as it travels through the water, whether lowered over the side of a ship with a winch to take measurements of a vertical column of water or integrated with an autonomous vehicle or glider.

Sea-Bird Scientific Profiling CTDs:

  •     Purposeful designs built to perform under the unique dynamic conditions found on varying measurement platforms
  •     Pumped and ducted constant flow for matched temperature and conductivity response
  •     Measurements are made on the same sample of water with a predictable delay and predictable flow effects
  •     Aligning and coordinating measurements done with software or (for some models) automatically
SeaOWL UV-A™ (SeaWater Oil Finder™)
Based upon the highly successful WET Labs’ ECO sensor, Sea-Bird Scientific has developed an industry leading detection technology creating a 5X optical resolution improvement over its predecessor.
The Thetis Profiler is a submersible, vertically profiling platform for use in coastal marine and fresh water environments.
DH4 is a sensor for the collection, storage, and merging of digital and analog data from up to eight sensors.
Environmental Characterization Optics (ECO)
The Environmental Characterization Optics (ECO) series of sensors incorporate a common set of options with a single basic design to make them ideal for a wide variety of deployments.
The ECO BB9 is a sensor system for measuring optical backscattering at nine wavelengths.
The c-Rover 2000 is an optical transmissometer designed for long-term deployment aboard profiling floats.
The Sea-Bird Scientific SeaOWL UV-A™ SLC introduces a new in-situ oil-in-water sensor specifically designed for integration into the Teledyne Webb Research Slocom glider.
The C-Star incorporates a novel monolithic housing with a highly integrated opto-electronic design to provide a low cost, compact solution for underwater measurements of beam transmittance.
ECO FL fluorometers measure fluorescence from chlorophyll-a, CDOM, uranine, rhodamine, and phycoyanin and phycoerythrin.
The Environmental Characterization Optics (ECO) series of sensors incorporates a common set of options with a single basic design to make them ideal for a wide variety of deployments.
WetLabs ECO BB
The ECO BB measures scattering at 124 degrees, the angle determined as a minimum convergence point for variations in the volume scattering function (VSF) induced by suspended materials and water itself. As a result, the signal measured by this meter is less determined by the type and size of the materials in the water and is more directly correlated to the concentration of the materials.
Provides highly accurate measurements of PAR (400–700 nm) in all aquatic environments.
ECO Triplet
The Triplet is a a special-order, three-optical-sensor instrument available in a user-defined configuration. The Triplet addresses the need for multiple simultaneous scattering and fluorescence sensors for autonomous and unattended measurement platforms.
WETStar Chlorophyll Fluorometer
The WETStar fluorometer provides breakthrough performance for detecting various types of fluorescence. It uses a central axial optical tube to provide efficient signal output.
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