초록 ▼

A method of monitoring the quality of water at a ground water sampling site without human intervention. Water at the sampling site is purged until at least one preselected purge criterion is satisfied. At least one water quality attribute is automatically measured at the sampling site, and the quali

A method of monitoring the quality of water at a ground water sampling site without human intervention. Water at the sampling site is purged until at least one preselected purge criterion is satisfied. At least one water quality attribute is automatically measured at the sampling site, and the quality of water at the site is determined based on the measured water quality attribute. The method is performed by a system including a control unit which, in accordance with a computer program, controls the taking of water quality attribute measurements at the sampling site. The control unit may be equipped with a port for downloading data to a technician on site and with a transceiver for communicating data to a base station via a communications network.

대표청구항 ▼

[ What is claimed is:] [1.] An automated method of unattended, continuous, real-time monitoring the quality of ground water at a sampling site, said method comprising the steps of:(a) measuring the water level at the sampling site;(b) calculating a minimum purge volume for the sampling site, based o

[ What is claimed is:] [1.] An automated method of unattended, continuous, real-time monitoring the quality of ground water at a sampling site, said method comprising the steps of:(a) measuring the water level at the sampling site;(b) calculating a minimum purge volume for the sampling site, based on the measured water level;(c) purging at least the minimum purge volume from the sampling site;(d) monitoring at least one of (i) a preselected water quality property of the water being purged from the sampling site, and (ii) a water quality constituent of the water being purged from the sampling site;(e) comparing the monitored water quality property and water quality constituent with a selected purge criterion; and(f) recording the monitored water quality property and water quality constituent when the monitored water quality property and water quality constituent compare favorably with the selected purge criterion,wherein steps (d) and (e) are performed in accordance with a predetermined schedule and with a frequency sufficient to enable detection of a trend in measurement values of the at least one of the water quality property and the water quality constituent.