Since the electrodes are not exposed to the system, Rosemount's inductive (toroidal) sensors are ideal for difficult applications where contacting sensors corrode or become fouled. Their low-maintenance design eliminates sensor polarization and coating. Sensors have a 3/4" NPT(M) top connection for immersion or insertion, and feature a huge measuring range of 250 to 2,000,000 µS. Each sensor includes a 20-ft attached cable.