Territory Stories

Electronic Data Collection and Analysis System



Electronic Data Collection and Analysis System


Yin Foo, Des; Foley, Margaret


E-Publications; PublicationNT; E-Books; Report ; 39/1992




Made available via the Publications (Legal Deposit) Act 2004 (NT).





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Power and Water Authority

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Report ; 39/1992

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Technical Report WRD92039 Viewed at 15:07:17 on 29/07/2010 Page 95 of 192. In U,e interim, the operating speed limits for pump and motor in terms of efficiency should be quantified such that appropriate combinations may be used in practice. This will minimise the "scatter" of data. Where these limits are infringed by necessity (ego equipment availability and suitability downhole) pumped bore drawdown should be manually measured at the usual frequency. (iii) The option for observation bore water level monitoring from a "central" logger. Monitoring of water levels from any observation bore is considered to be best served by a dedicated remote logger. This strategy will reduce the amount of unspooled cable on site, reduce the possibility of data loss due to logger co-ordination and organisational problems, increase the "central" loggers I memory availability and eliminate the need to shield or protect cable from damage, or heating if vE,nted cable is used. (iv) The need for barometric monitoring and correction. When compared logged data, to the errors associated with the the magnitude of the required correction may Barometric data be considered to be insignificant. is available from the Bureau of Meteorology in Darwin and general data corrections usin9 this data could be applied if necessary. In addit:ion, should dedicated remote loggers be utilised for observation bores, the use of vented apparatus will eliminate the need for this correction. (v) The use of an alternative pressure transducer for the "flowmeter" should be examined. The current unit is bulky, sensitive to elevation chanqes, and is attached to the oriface tube via a hose which is subject to air entrapment. Direct