Conductivity sensors measure the ability of a solution to conduct a current. The higher the concentration of ions in the solution, the higher the conductivity, which is measured in microSiemens (mS). Unlike pH which only measures the concentration of hydrogen ions, conductivity measurements take into account all the ionic species present.
measurements can be used to determine the concentration of a solution provided
the dissolved species are known but will not differentiate between acid and
base. A common use of conductivity measurement is found in CIP (clean-in-place)
systems utilized in pharmaceutical and food applications. Here, specific
concentrations of the cleaning solution are critical to the process as well as
ensuring the solution has been completely rinsed away at the end of the cycle.
2-Pole Sensor Features:
4-Pole Sensor Features:
- Low cost solution
- Accurate measurement of solutions with extremely low or high ionic strength
- Measurement linearity over a large range
- No polarization effects
- Less sensitive to coating from contaminated samples