Overview
The Allen-Bradley 871TM-B8N18-H2 is a metal-face inductive proximity sensor designed for reliable object detection in demanding industrial automation applications. This 18 mm tubular stainless steel sensor operates on 20–250 Volt AC/DC with an 8 mm sensing distance, non-shielded operation, and normally open output. The sensor features durable stainless steel construction and is equipped with Tough Link cable connectivity for robust field deployment.
Key Features
- Stainless Steel Housing: Resists impact, abrasion and corrosion for extended service life in corrosive or wet environments
- Compact Tubular Design: 18mm barrel diameter fits standard mounting applications with minimal footprint
- Wide Voltage Range: 20–250V AC/DC operation provides flexibility in control system integration
- Normally Open Contact: Standard switching output for general-purpose proximity detection
- Tough Link Cable: Reliable connector system rated for harsh plant floor conditions
- Non-Shielded Detection: Suitable for ferrous and non-ferrous metal detection in open mounting scenarios
Technical Specifications
- Sensing Distance: 8 mm
- Operating Voltage: 20–250V AC/DC
- Barrel Diameter: 18 mm
- Housing Material: Stainless Steel
- Output Type: Normally Open (AC)
- Contact Type: Metal Face
- Cable Length: 2 m
- Cable Gauge: 18 AWG
- Weight: 0.64 lbs
- Connection Type: Tough Link
Typical Applications
The 871TM-B8N18-H2 is commonly deployed in:
- Metal detection and sorting on production lines
- Parts counting and positioning in automated assembly
- Conveyor systems and material handling equipment
- Food processing and pharmaceutical manufacturing where corrosion resistance is essential
- Chemical and petrochemical plant automation
- General-purpose industrial control systems requiring reliable proximity sensing
Compatibility & Replacements
Compatible With
- Allen-Bradley control systems and PLCs supporting 20–250V AC/DC input signals
- Modular input/output (I/O) modules with discrete 24VDC or higher voltage sensing circuits
- Standard industrial automation controllers and programmable logic controllers (PLCs)
- Relay logic and hardwired control circuits
- Any automation application requiring normally open proximity switching
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 871TM series offers multiple variants; confirm the exact model designation matches your application requirements.
Works With
- Standard discrete 24VDC, 120VAC, and 240VAC control input circuits
- Traditional relay-based control systems
- PLC input modules configured for AC/DC inductive sensors
- Hardwired industrial control applications
