IC Controls

Conductivity

Electrolytic conductivity is a measure of the ability of a solution to carry an electrical current. Current flow in liquids differs from that in metal conductors in that electrons cannot flow freely but must be carried by ions. When solids dissolve in water they separate into ions which have opposite electrical charges. For example, sodium chloride separates to form Na+ and Cl- ions, however since they are invisible, it is difficult to know how much of it has dissolved. A conductivity sensor measures the concentration of ions in a solution by the electrical current able to flow through it.