Turck BI20-G47-AZ3X-B2131 Inductive Proximity Sensor

Turck BI20-G47-AZ3X-B2131 is a rugged inductive proximity sensor designed for long-range detection of metallic targets in industrial automation, delivering non-contact metal object detection with a 20 mm sensing distance. It is a 2-wire normally open device that operates on 20–250 VAC or 10–300 VDC, switches up to 100 mA, and supports a 20 Hz switching frequency, using a 1/2" male connector on a threaded metal barrel (M30 x 1.5) with a chrome-plated brass housing and IP67 protection, and it is flush-mountable for tight installations. The metal-barrel housing and connectorized design resist dust, moisture, and mechanical wear, making it suitable for conveyors, packaging machines, material handling equipment, stamping presses, and automated production lines where reliable presence feedback to PLCs is required. Operating temperature ranges from -25°C to +70°C, and a red LED indicates switching status; common replacements include BI20-G47-AP6X2-B1141, BI15-G30-AZ3X-B3131, and BI20U-CA40-AP6X2-H1141.