CS10 & CS51 Sensors

The CS10 / CS51 two electrode conductivity sensors are designed for in-line and submersible clean water applications. Industry standard cell constants include 0.01 / 0.02 / 0.05 / 0.1 / 1.0. Temperature compensation options include PT100, PT1000, and 8550 ohm for full compatibility with most major manufacturer's conductivity analyzers.

CS10 Two Electrode Conductivity Sensor                CS51 Two Electrode Conductivity Sensor 
 CS10 CS51


  • CS10 for low conductivity (0-100/250/500 microSiemens)
  • CS51 for higher conductivity (0-1000/20,000 microSiemens)
  • 316 Stainless Electrodes, Teflon (TFE) insulator, EPDM seal
  • 1/2 and 3/4 inch Male NPT process connection options


Two electrode sensors provide a simple, time-proven method for conductivity measurement. Precision machined electrodes of various sizes (cell constants) are matched to the process based on their measurement range. Two electrode sensors are recommended for use in clean (non-coating) applications such as the following:
  • Ultrapure Water
  • Demineralized / Deionized Water
  • Reverse Osmosis
  • Water for Injection
  • Boiler Water

Sensor Technology - How it works

2 Electrode Tech

Two electrode conductivity measurement is based on the ability to conduct a current between two electrodes. The concentration of ions in the liquid are directly proportional to the conductance of the liquid.

Pros Cons
  • Simple, time-proven electrode design
  • Industry standard cell constants determine measurement range
  • Works best for clean applications where electrodes do not get fouled
  • High accuracy and repeatability
  • Susceptible to coating and scale (no compensation)
  • Susceptible to corrosion
  • No diagnostics


Conductivity Chart