Products

LPR Corrosion Sensor

Linear polarization resistance (LPR) is an electrochemical technique used to monitor corrosion in several industrial systems, piping, cooling towers, and more that are exposed to the flow of conductive water. This is done with LPR corrosion probes or sensors, which measure the rate of corrosion. Walchem offers LPR sensor input/output cards in equipment capable of feeding chemicals for corrosion control, especially in cooling towers. The electrodes used on these sensors must be the same material as those in the system.

Key Benefits

  • Reliable 4-wire design
  • Corrosion Rate and Imbalance
  • Dual corrosion sensor input
  • Automatically measures conductivity and compensates for it each cycle
  • Able to set a control delay during the initial stabilization time
  • Automatic electrode replacement reminder
  • Disturbance Control Algorithms that take advantage of the corrosion signal
    – Target PPM mode with Disturbance
    – Adjusts the target PPM higher if corrosion increases
  • On/Off Disturbance mode
    – Adjusts the target PPM higher if corrosion increases