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TOPAX® L 4 Controller

• Chlorine dioxide measuring and controller device.
• Temperature controller device.

  Measuring unit

• Measures: Free chlorine content, temperature
• Metering range:
         - 0.00 - 4.00 mg/l H2O2 - Chlorine dioxide measurement
         - -22 - 284°C - Temperature measurement
  
• Display: Measurement values with relative units. Status messages, sensors. Calibration, controller and alarm.
• Temperature compensation: Either manual or automatic, Pt 100 measuring principle.

  Controller unit

• Switch points: 2 switch points with adjustable effective direction setting
• Controller options: ON/OFF controller, with optional hysteresis. Proportional (P) controller - pulse-pause, pulse- frequency or continuous controller. Proportional integral (PI) controller -

  pulse-pause, pulse- frequency or continuous controller

• Hysteresis: freely adjustable within the metering range
• Proportional gain KP: freely adjustable within the metering range
• Reset time TN 0 - 2000 sec
• Minimum impulse: 0.1 - 9.9 sec
• Pulse + pause time: 02 - 99 sec
• Impulse frequency: 100 - 7200 impulses/h
• Switch-on delay: 0 - 200 sec
• Alarm function: minimum and maximum threshold