Beginning in the late 1950's
Neil Brown developed methods to determine ocean salinity in real-time using measured seawater conductivity and temperature. This pioneering work eventually resulted in the first modern conductivity-temperature-depth (CTD) sensor.
The NBOSI approach to measuring salinity is an evolution of Neil Brown's patent (
US 6,720,773) for an internal field, four-electrode conductivity cell with an integral pressure-protected thermistor and efficient, self-referencing electronics.
Optimized for use on mobile platforms, the NBOSI CT Sensor is free-flushing, fast-responding, quiet, vibration-free, rugged, low-power and insensitive to mounting location. Unlike existing two-electrode cells, the NBOSI Sensor not require an energy-consuming and noisy pump. And unlike inductive cells, our compact, rugged, and low-drag sensor may be mounted anywhere on the vehicle without compromising data quality or sacrificing hydrodynamic efficiency.
All NBOSI sensors use 99.95% pure platinum electrodes and are fully epoxy potted and capable of operation beyond 6000 dbar. We regularly perform in-house pressure validation testing to 9,800 psi (6750 dbar) for customers operating under extreme conditions.
All products are assembled and calibrated in our
Massachusetts, USA facility.