Fargo Controls, Inc. Miniature Inductive Sensor with Increase Sensing Range S3871

The S3871 is an NPN, normally closed inductive sensor with a 3 mm diameter stainless steel case, designed for flush mounting in industrial environments. It operates on a 10 to 30 Vdc power supply with a maximum switching current of 100 mA and a power drain less than 8 mA. The sensor has an operating distance of 1 mm, a voltage drop under load of less than 1.5 V when active, and an operating frequency of 2 kHz. Repeatability is within ≤ 1% of the rated distance, with hysteresis less than 15%. The device includes LED status indication, short circuit and reverse polarity protection, and meets IP67 for dust tightness and immersion resistance. It uses a 2-meter pigtail cable with a C1 connector and operates within a temperature range of -25 to +70 °C.