The essay introduces the multiparameter water quality monitoring system.The system can measure water level,temperature,pH,conductivity,ammonia/azotes and chromic,etc.It is composed by 3 parts: the instrument of monitoring system,GSM communication model and the indoor terminal.The data can be transmitted wirelessly.The essay mainly discussed the instrument based on MSC1210Y5.The MSC1210Y5 is a completely integrated family of mixed-signal devices incorporating a highresolution delta-sigma ADC,8-channel multip...