Inductive probe measures conductivity through an inductive sensor.
The inductive sensors design eliminates polarization errors and electrode coating problems that commonly affect conventional conductivity contacting-electrode models.

Inductive conductivity sensor induces a low current in a closed loop of solution, then measures the magnitude of this current to determine the solution’s conductivity.

The conductivity probe drives Toroid A, inducing an alternating current in the solution. This current signal flows in a closed loop through the sensor bore and surrounding solution.
Toroid B senses the magnitude of the induced current which is proportional to the conductance of the solution.