Instrumentation for continuous in situ monitoring of water quality

A continuous river water-pollution level monitoring system using a comprehensive instrumentation package coupled with a microprocessor (μP)-based data logger and telelink is described. The instrumentation package along with a power supply unit and a μP-based converter and transmitter set is housed in a floating buoy, and on-shore receiving is effected through another μP-based system. A retransmission is performed next, and data are received at a station sufficiently remote from the river banks, where the data are stored as well as processed for further use. Bench-level tests and in situ experiments have shown promising results for long-term monitoring of water-quality parameters of a river