This document defines terms, specifies test methods and provides reporting requirements for marine sensor specifications to ensure a consistent reporting by manufacturers. It is applicable to those devices known as conductivity-temperature-depth (CTDs), sound velocity probes, multi-parameter sondes and dissolved gas sensors, that measure parameters such as conductivity, temperature, pressure, sound speed, dissolved oxygen, turbidity, pH, and chlorophyll in seawater. It is also generally applicable to all marine environment instruments. NOTE 1: A CTD directly measures conductivity, temperature, and pressure. Depth is derived from pressure using an equation. NOTE 2: The term sound velocity probe is widely used to describe instruments that measure sound speed. In this document the term ?sound velocity is used when describing the type of sensor, and the term sound speed is used when describing the parameter or measurand, but these terms can be used interchangeably.
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This document specifies the overall framework of ocean hydro-meteorological observation systems, including the system function composition, the data structure type and data transmission format and protocol, as well as the input and output interface. These systems support automatic measurement of e.g. buoy, submersible and shore station instruments, with output interfaces, and provide observations on e.g. water temperature, salinity, depth, current, ocean wave, temperature, pressure, humidity, wind, visibility and precipitation. They have the ability to receive, store, display, process, and analyze data. This document is intended for both developers of ocean observation systems and ocean observers.
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