Highly corrosive chemicals in the polymer surge drum can quickly destroy sensors and create dangerous situations. The Rosemount™ 242 Flow Through Toroidal Conductivity Sensor with replaceable liner is an ideal solution to measure conductivity in the outlet from the polymer surge drum to identify phase transition between polymer emulsion and water. The Rosemount 400 Contacting Conductivity Sensor can be used to monitor conductivity to detect leaks in coolant coils and heat exchangers.