Self-Recording CTD

The Self-Recording CTD (Conductivity-Temperature-Depth) is an independent marine observation instrument that measures seawater conductivity (salinity), temperature, and depth. It stores data in built-in memory without needing real-time connection to onboard systems. Compact and low-power, it is suitable for long-term deployment on buoys, mooring systems, or tow devices. Widely used in ocean profiling, environmental monitoring, fishery research, and climate change observation, its high resolution and pressure resistance make it a precise tool for tracking marine hydrographic changes.