Pyxis Corrosion Sensors

The Pyxis CR300 Series corrosion rate sensors are ideal for cooling and process water treatment monitoring where robustness and affordability are a must. The sensors utilize the linear polarization resistance (LPR) method to produce a raw signal. The raw signal is conditioned, amplified, and digitized directly in the sensor itself. This avoids the interferences and attenuation of the raw signal caused by long-distance wiring needed for other corrosion probes to a separate signal conditioner or transmitter box. The Pyxis corrosion sensors measure sample water conductivity directly and compensate for the conductivity impact on the LPR measurement up to 10,000 μS/cm. These unique product characteristics make the Pyxis LPR superior in performance and accuracy. In addition to the LPR measurement to obtain the general corrosion rate, the CR-Series sensors also measure electrochemical noise. The measured noise data is used to calculate an index to quantify the localized corrosion rate also referred to as pitting.

Key Benefits:

  • 4-20 mA signal allows corrosion sensing in W600 and fully loaded W900 controllers
  • Ultra-low corrosion rate detection as low as 0.001 mils per year (MPY)
  • Default Corrosion Rate Ranges and Alloy Factor Assigned with Metallurgy selection via uPyxis APP

Typical Applications:

  • Cooling & Process Water Monitoring
  • Mill Supply, Once Through and Closed Loop Systems
  • Domestic Water Monitoring

The CR-301 is a standalone high temperature and high pressure rated LPR corrosion sensor that can be powered by a 24 VDC power source such as an existing controller, PLC or DCS. The sensor is composed of Titanium and PEEK (Polyether Ether Ketone) making it highly resilient to extreme process environments, temperatures and pressures. The CR-301 also offers an expanded general corrosion range as high as 995 mils per year and localized corrosion index as high as 100.