BI 15 Series The BI 15 Series of inductive proximity sensors from Turck Banner. Turck Banner Inductive Proximity Sensors Inductive sensors are designed for contact-less and wear-free detection. They are the perfect solution for breweries, frozen food, dairies and packaging applications. Resistant to cleaning agents and disinfectants and exceed the protection classes IP68 & IP69K. These sensors are available as standard versions in chrome plated brass blocks or stainless steel housing with LCP front cap and double lip seal for heavy use or sudden changes in temperature. All inductive sensors of the new uprox+ generation operate with highest switching distances, feature an extended temperature range and are easily mounted.