Regarding this case, Advantech provided a total solution with distributed architecture to meet the purposes of stable operations. There are three major systems to monitor and control the water supply procedure: dose-control system, reservoir water-level monitoring system, and pipeline monitoring system.
The first system is for dose control. Advantech provided the APAX-5520KW to connect to various I/O modules via Ethernet to control the dosages which enable engineers to fully master the system’s conditions. As for the IO modules, an APAX-5017 monitors the dose tank level; an APAX-5028 controls a dosing pump; an APAX-5040 and APAX-5046 are individually responsible for the digital signals (input and output) of the pump status, and an ADAM-4117 is used to acquire the untreated water flow rate data. After that, the flow rate can be converted into accumulative amount, which can be stored for future use.
The second system is for distribution reservoirs. By using the robust ADAM-4117 analog input module - with Advantech’s EKI-1322 GPRS serial device server, ADAM-4572 gateway, and EKI-7626C switch to acquire the water level, this solution not only transmits the instant data to control center in the water supply plant, but also eliminates the wiring problem and power shortage issues because those Advantech’s wireless products are low power usage. Meanwhile, another APAX-5520KW in the plant can control water inflow. When the reservoirs’ water-level is too high, the controller will shut down the pump that delivers water to tanks.
The pipeline management is the third system which includes an APAX-5520KW and APAX-5017 to collect pressure data as well as using an APAX-5040 to detect the cabinet’s door status to ensure the door is closed and the devices are working properly. In accordance with Taiwan’shot and humid sub-tropical climate, Advantech’s products support wide operating temperature range (-10~60°C) and relative humidity between 5~95% to guarantee a steady operation when used outside.