Balluff BES 516-325-G-E5-C-S4 Inductive Proximity Sensor

Balluff BES 516-325-G-E5-C-S4 is a compact inductive proximity sensor designed for flush mounting in tight automation spaces. Encased in a 12 mm-diameter M12x1 body (Ø12 × 45 mm), it detects metal targets with a nominal sensing range of 4 mm and provides a PNP normally open switching output suitable for direct interfacing with logic inputs and PLCs. The device is cataloged as BES00PY and is intended for use in applications such as end-of-travel detection, part presence sensing on conveyors, and tool-change monitoring on machines, where a small, robust sensor is required. Real switching performance is defined by a real switching distance sr of 4 mm, an assured operating distance Sa of 3.2 mm, a hysteresis of 15% of Sr, and a temperature drift up to 10% of Sr, with tolerance Sr ±10% for consistent repeatability across cycles. Construction-wise, the housing is brass with a nickel-free coating and a sensing face of PBT, delivering reliable operation in industrial environments without requiring special maintenance. The flush-mount design plus the M12x1 connection provides a compact, easy-to-integrate sensing solution for metal-detection tasks on production lines.