Control Modes Versatile control options include on/off, proportional, and PID configurations. This advanced programming capability ensures precise maintenance of set points for process parameters while eliminating overshoot and minimizing chemical consumption. Hold Function Convenient hold capability can be activated manually or through an external digital input, effectively pausing control operations during routine maintenance procedures. Configurable Alarm System Comprehensive alarm features allow customization for set point deviations, temperature anomalies, or operational issues. A prominent red alarm LED provides clear visual indication from afar, while all control relays remain deactivated until the condition is resolved. Auto-Cleaning Cycle Programmable cleaning routines enable scheduled wash cycles that activate connected relays to operate valves, pumps, or compressed air systems, ensuring sensors stay clean for consistent and dependable measurement performance. Relays Robust relay configuration offers up to five electromechanical control relays plus one dedicated alarm relay for comprehensive process management. Analog Outputs Isolated analog control is provided through up to four galvanically isolated 4-20 mA outputs, ideal for precise regulation of dosing pumps and valves. Digital RS485 Output Seamless system integration via RS485 allows daisy-chaining of up to 32 controllers for centralized remote monitoring and data acquisition. Digital Inputs Flexible external control is enabled by two digital inputs that support functions such as hold activation, cleaning initiation, or temporary disabling of control operations. Large LCD Clear and informative display shows real-time measurements alongside status indicators for potential issues. The dedicated DIAG key provides immediate access to detailed diagnostic information. Data Logging Comprehensive data recording captures measurements at user-defined intervals, including relay states and calibration records. Up to 100 lots with 8600 records each can be stored and exported as CSV files via the USB Type-C port. Help Button Context-sensitive assistance is available through the ? DIAG button, delivering clear explanations for error conditions or detailed guidance on current setup parameters.