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Design, development, and field demonstration of a remotely deployable water quality monitoring systemA prototype water quality monitoring system is described which offers almost continuous in situ monitoring. The two-man portable system features: (1) a microprocessor controlled central processing unit which allows preprogrammed sampling schedules and reprogramming in situ; (2) a subsurface unit for multiple depth capability and security from vandalism; (3) an acoustic data link for communications between the subsurface unit and the surface control unit; (4) eight water quality parameter sensors; (5) a nonvolatile magnetic bubble memory which prevents data loss in the event of power interruption; (6) a rechargeable power supply sufficient for 2 weeks of unattended operation; (7) a water sampler which can collect samples for laboratory analysis; (8) data output in direct engineering units on printed tape or through a computer compatible link; (9) internal electronic calibration eliminating external sensor adjustment; and (10) acoustic location and recovery systems. Data obtained in Saginaw Bay, Lake Huron are tabulated.
Document ID
Document Type
Technical Memorandum (TM)
Wallace, J. W. (NASA Langley Research Center Hampton, VA, United States)
Lovelady, R. W. (NASA Langley Research Center Hampton, VA, United States)
Ferguson, R. L. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
July 1, 1981
Subject Category
Report/Patent Number
Funding Number(s)
PROJECT: RTOP 146-40-15-03
Distribution Limits
Work of the US Gov. Public Use Permitted.

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