Balluff BES 516-131-S4-C Inductive Proximity Sensor

The Balluff BES0178 BES 516-131-S4-C is a compact cylindrical inductive proximity sensor designed for reliable metal detection in harsh environments. Encased in a stainless-steel body (Ø12 x 70 mm) with an M12x1 four‑pin connector, this non‑flush sensor detects ferrous targets within a 4 mm sensing range and provides a PNP normally open or normally closed output from a 10–30 VDC supply. Balluff builds it for industrial use, delivering IP68 protection, a PA12 sensing face, and a wide operating temperature range from -40 °C to +85 °C, making it suitable for moisture, dust, and coolant-prone environments. The device switches at up to 2,500 Hz and supports a maximum load current of 200 mA, ensuring fast, dependable response in compact automation setups. With its stainless-steel housing and robust connectors, the BES 516-131-S4-C is well suited for end-of-travel sensing, presence detection of metal workpieces on conveyors, and other proximity tasks where space is limited and reliability is critical.