Record Display for the EPA National Library Catalog

RECORD NUMBER: 5 OF 14

OLS Field Name OLS Field Data
Main Title Digital Systems for On-Site Collection for Water Quality Analysis.
Author Testerma, M. K. ;
CORP Author Arkansas Univ., Fayetteville. Water Resources Research Center.
Year Published 1970
Report Number Pub-9; OWRR-A-008-ARK; A-008-ARK(1),; 03782
Stock Number PB-197 116
Additional Subjects ( Water quality ; Data processing) ; ( Monitors ; Water quality) ; ( Water analysis ; Water quality) ; Digital computers ; Data transmission ; Surveys ; Water pollution ; Dissolved gases ; Temperature ; pH ; Conductivity ; Turbidity ; Chlorides ; Remote areas ; Water pollution detection
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-197 116 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 67p
Abstract
A prototype system has been developed for recording and transmitting digital data at a remote water quality monitoring station in an unattended manner. As many as eight analog signals from transducers, which measure water quality characteristics such as dissolved oxygen, temperature, pH, chlorides, conductivity redox, and turbidity, are converted to digital signals and recorded in binary coded decimal format on magnetic tape. This unit may be contacted from a central station for playback of the day's recording. The transmitted data can be recorded at the central station by teletype. Each data record includes a time-of-day 'word' so that all data is identifiable. The techniques developed during this contract period have possible application in many areas of water resource research, particularly for use in making water quality measurements in remote areas or at numerous sites reporting to one central station. (Author)