Turck Ni4-DSU35-2ADZ30X2-B1151 Inductive Proximity Sensor

The Turck NI4-DSU35-2ADZ30X2-B1151 is a dual-inductive proximity sensor designed for rotary actuator position monitoring and valve feedback in industrial automation. Its dual inductive sensing provides wear-free, contactless detection of open and closed states on butterfly valves, ball valves, pneumatic actuators, and related process equipment where reliable end-of-travel signals are required. The sensor operates from 20-250 VAC or 10-300 VDC, with 400 mA AC or 300 mA DC rated output current, and a sensing distance of 4 mm. It uses a DSU35 rectangular housing made from PP-GF30-V0 thermoplastic and features a 7/8" male connector (B1151) with a 4-wire AC/DC configuration for non-flush mounting and a switching frequency of 20 Hz. Protection is IP67, and the operating temperature range is -25°C to +70°C. Key features include dual outputs for valve position monitoring, short-circuit protection, reverse polarity protection, and LED indication. Common applications include rotary actuator position feedback and valve monitoring in wastewater treatment, chemical plants, and food and beverage processing lines that require reliable open/closed state signaling. Common replacements include TURCK NI4-DSU35TC-2ADZ30X2 and NI4-DSU26TC-2ADZ30X2.