D-2 Inc.’s latest version of its flow-through closed-field conductivity cell for measuring ocean salinity delivers precise conductivity measurements.
Developed, tested, and produced in collaboration with Woods Hole Oceanographic Institution (WHOI) and the Bermuda Institute of Ocean Sciences (BIOS), the new design features a straight-line flow-through cell with no obstructions. This ensures a fully closed field while maintaining an unobstructed, linear water flow.
The standard housing for the CTD is provided in a protective carrying case, preventing damaged during shipment or whilst being stowed on board a vessel. Custom foam inserts keep the unit from moving about during transit. These standard housings for the CTD come in Titanium (pictured) or Stainless Steel, or Aluminum.
How the Conductivity Cell Works
The redesigned conductivity cell consists of a straight glass tube with annular electrodes. These electrodes close the cell electrically, creating a closed circuit in which the inductive cell measures conductivity and salinity.
The unobstructed flow design prevents ice or debris from becoming trapped in the cell. Initial testing has demonstrated improved precision in water flow, allowing users to achieve the accuracy of a closed-field cell with the advantages of an inductive free-flowing system.
The cell can be integrated into third-party ocean sensors to enhance operational precision, reduce power consumption, and improve efficiency. D-2’s small form-factor, closed-field conductivity cells do not require a pump unless specifically needed for biological or low-flow applications.
Additionally, the new CTD cell can be configured into OEM housings and integrated into existing platforms without requiring a standard housing.
