Sick WTB4-3N1361 Photoelectric Proximity Sensor, Background Suppression

Part Number / MPN: 1028097

W4 Inox ECOLAB, diffuse reflective w/ BGS background suppression, 10mm-350mm, NPN 100mA, M8 4-pin pigtail, IP69K stainless 1.4404.

Product Overview

WTB4-3N1361 (catalog 1028097) is a member of the proven SICK W4 family, in Inox version (stainless steel housing 1.4404/AISI 316L) with ECOLAB detergent and high-pressure IP69K wash-down certification. Diffuse reflective technology with Line-Spot Background Suppression (BGS) reliably detects objects of any color (black shrink-wrapped parts on shiny stainless conveyors, white foils on black plastics) within 10mm-350mm sensing range. A bright red Class 1 laser-class laser-LED line spot simplifies initial alignment. The 4-pin M8 connector with 2m pigtail is NPN with a single switching output and IO-Link v1.1 for parameterization, identification, and real-time diagnostics including received-signal strength, temperature, and operating hours via IO-Link master. 316L stainless housing resists repeated 80°C high-pressure jet wash cycles with alkaline and chlorine-based disinfectants common in food & beverage, pharmaceutical, and life-science filling lines.

Technical Specifications

TechnologyDiffuse reflective with Background Suppression (BGS), PinPoint LED line spot
Sensing Range10 mm … 350 mm (100 mm recommended, BGS cut-off 360 mm)
Light SourceRed Line-Spot LED (Class 1 laser-LED, 630 nm, <1 mW average)
Output TypeNPN (PNP variant available: WTB4-3P1361)
Switching Frequency1500 Hz
Housing MaterialStainless Steel 1.4404 (AISI 316L)
Connection4-pin M8 connector, 2m pigtail, PUR cable
Protection RatingIP67/IP68/IP69K, ECOLAB-tested, FDA compliant wetted materials
Ambient Temperature-30°C … +60°C (storage -40°C … +70°C)
DiagnosticsIO-Link v1.1: SSC / signal strength, temperature, operating hours, contamination alarm

Quality & Warranty

All products sold by our company undergo a rigorous multi-stage inspection process: visual inspection, parameter verification, power-on functional testing, and (when applicable) industrial bus communication loopback testing. Every unit ships with a 12-month replacement warranty, full QC inspection report, and professional packaging suitable for international export shipping via DHL/FedEx/UPS.

For multi-unit orders, project inquiries, or requests for additional photos / datasheets / factory acceptance test reports, please contact our sales engineers through the Request Quote button or email us directly. Response time is within 24 hours on business days.

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