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FX-421C pH Analyzer and Compound Loop Controller

pH analyzer compound loop controller FX421C

Control your pH and chemical cost with the Foxcroft FX-421C pH Analyzer with integral compound loop set point controller for food processing, potable water, wastewater, and industrial applications.

The ISFET electrode element is faster to respond, allowing tighter control and stability, requiring less frequent calibration. Modular construction allows the electrode to be safely removed without disrupting power to the electronics. The electronics provide a 4-20mA output signal as well as a high and low relay. All are sealed in a plastic, weatherproof, corrosion-resistant housing.

The Compound Loop Control Model can adjust pH based on ph and flow. Manually or automatically tune data parameters via the built-in keypad and display. The setup prompts and menus are easy to follow and are available in five languages.

Available controller options include digital input, additional output and alarms, RS485 or Ethernet communication, control via remote computer or SCADA system.

Product Features:

pH Analyzer Module

  • Solid State, non—glass sensor suitable
    for food processing applications
  • Local 4-Digit Display of pH and
    Temperature. 3-Button Keypad
  • Sample or Auto Buffer Recognition,
    1 or 2 point calibration
  • (1) 4-20mA Control Output,
    (1) auxiliary output
  • Auxiliary Relay Alarms - High and Low
  • Integral Mount for Pipe Insertion Standard
  • Remote Monitor Can Be Located Up
    to 2000 ft. Away
  • Submersible Sensor Up to 20 Feet
    Deep Available
  • Sensor and Electronics Diagnostics
  • Modular Construction Simplifies
    Electrode Replacement

Controller Module

  • Provides accurate single or compound
    loop set-point control
  • Accepts two 4-20mA inputs as standard
  • 3 control modes: Flow, pH, or Both
  • 4-20mA output
  • 2-line display shows process variable
    or set-point and output.
  • Auto/Manual output control.
  • Non-volatile memory maintains all
    preset data.
  • Two electromechanical alarm relays

To download a PDF of this product specification sheet click HERE