Turck BI5-G18-AZ3X-B1431 50mm Inductive Proximity Sensor

The Turck BI5-G18-AZ3X-B1431 is a 50 mm threaded, AC/DC universal inductive proximity sensor designed for non-contact detection of metallic targets in industrial automation. It is commonly used on packaging equipment, conveyors, assembly stations, and machine tools where reliable position sensing or object detection is required, and supports either relay-controlled or PLC-based control through its operating voltage of 20–250 VAC / 10–300 VDC and 2-wire normally open output. The sensor features a 5 mm sensing distance, a 3-pin male connector, extended 50 mm housing length, M18 x 1 thread, chrome-plated brass housing, and IP67 protection for harsh environments. It operates from −25°C to +70°C and handles up to 100 mA switching current at up to 20 Hz switching frequency. Built-in reverse polarity protection, short-circuit protection, and an LED status indicator provide diagnostic clarity during installation and operation. Common replacements include Turck BI5-G18-AP6X-H1141 and BI5-G18-AN6X-H1141, making it a straightforward retrofit or replacement for packaging lines, conveyors, and automated machinery that rely on non-contact metal object detection and position feedback.