TAILIEUCHUNG - Environmental Monitoring Part 6

Tham khảo tài liệu 'environmental monitoring part 6', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | PILS Low-Cost Water-Level Monitoring 141 produced by YSI Inc. called a Portable SeaKeeper 1500 Fig. 5 . The Portable SeaKeeper or PSK is a scaled-down version of the SeaKeeper 1000 systems that are deployed on nearly 50 different vessels of opportunity around the world. Some vessels are used for research others are operational ferries and still others are private yachts. Each of these vessels contributes data and research to the International SeaKeepers Society and now the Jag Ski does too Fig. 6 . Fig. 5. The YSI Portable SeaKeeper 1500 mounted on the stern of the Jag Ski. Fig. 6. Initial testing of the YSI PSK on a local river. 142 Environmental Monitoring The PSK contains an YSI 6600v2 sonde a Turner Designs C3 submersible fluorometer a Thrane Thrane Sailor Mini-C vessel monitoring system a diaphragm pump and a dedicated small-form PC running the Windows XP operating system Fig. 7 . The PSK continuously draws near-surface water by way of a ram intake and pump routes it through a manifold and then to flow chambers attached to the YSI 6600v2 and Turner Designs C3. The YSI sonde measures temperature specific conductivity salinity pH turbidity dissolved oxygen and chlorophyll. The Turner Designs fluorometer measures chromophoric dissolved organic matter CDOM crude oil and refined fuels relative to a calibration standard or deionized water. The Sailor Mini-C contains a 12-channel GPS receiver and Inmarsat-C antenna and transceiver which provide vessel positioning and data telemetry to the SeaKeepers online data repository. The PSK currently reports samples at Hz but this value can be increased or decreased by the user. In the coming months an . Young meteorological station is being added to the Jag Ski and integrated with the PSK system. The meteorological station will provide continuous underway measurements of wind speed and direction air temperature relative humidity and barometric pressure. If the suite of sensors and measurement capabilities of the PSK

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