Fargo Controls, Inc. Rectangular DC 3/4 & AC 2 Wire Inductive Proximity Sensor S3820

The S3820 is a DC 3-wire inductive proximity sensor with NPN normally open output, designed for non-contact detection of metallic objects. It features short circuit and reverse polarity protection, an LED function indicator, and an IP67-rated enclosure for dust and water immersion resistance. The sensor operates on a 10-30 Vdc supply with a maximum switching current of 200 mA and a voltage drop of less than 1.8 V when ON. It has an operating frequency of 1 kHz, a repeatability of ≤3%, and a hysteresis of less than 10%. The case is plastic and supports flush mounting. The standard output connection is a 2-meter PVC cable, with 5-meter versions available as S3481. The operating temperature range is -25 to +70 °C, with a high-temperature variant available upon request.