Multiple Channel Chemical Sensor System

Technology Overview: A multiple channel piezoelectric sensor system is provided for online monitoring of water quality parameters. The system consists of an array of piezoelectric sensors with different types of receptor coatings for multiple water quality parameters covering inorganic organic and biological species. Water quality parameters are analyzed by calculation with physical property changes of the sensors. Warning alarms and process control commands will be displayed on local or remote monitor and be sent to prescribed recipients when certain water quality thresholds are reached. Technology Features: The multiple channel piezoelectric sensor system consists of a sampling portion a fluidic control module a flow cell array equipped with dual-crystal piezoelectric sensors plus ORP electrodes and a data process/reporting module. Water samples are drawn from water source or piping system and introduced to the flow cell array in which the piezoelectric sensors are mounted. The system can monitor various water quality parameters for example organic compounds heavy metals and bacteria as well as COD BOD and TOC etc using piezoelectric sensing coupled with ORP analysis. Continuous and real-time monitoring is assured by using quantitatively controlled sample dividing and cyclic sequential sensing techniques. Signal stability is enhanced by using dual-crystal piezoelectric sensors for effective noise elimination. Signal stability is further enhanced by using stepwise sample flow with intermittent static data acquisition. Applications: Water quality monitoring of drinking water process water recycled water treated water ground water reservoirs and catchments. Patents: Patent pending – US Provisional Application filed Opportunity: Licensing /Partnership in commercial development