Digital control has brought major advances in wastewater treatment operator productivity and plant efficiency and performance. Control systems enhance measurement precision and reliably keep critical processes within tolerances even when unattended. Here are some recent innovations in digital technology for wastewater treatment operations.Programmable controller The SEL-2411 programmable automation controller from Schweitzer Engineering Laboratories Inc. is designed for mission-critical applications in harsh water and wastewater applications. Digital and analog I/O options and various communications protocols provide flexibility. Users can customize the SEL-2411 with enclosures, preprogramming and numerous other options to meet specific applications. In addition to UL and Class I, Division
