Overview
The Allen-Bradley 871TM-BH5N18-R3 is a tubular inductive proximity sensor engineered for precise detection of metallic targets in demanding industrial automation applications. This 18mm diameter sensor combines robust stainless steel construction with advanced sensing technology to deliver consistent performance in harsh or corrosive environments where ordinary sensors may fail.
Key Features
- 5mm Sensing Distance: Compact detection range suitable for confined spaces and tight assembly tolerances
- Shielded Design: Minimizes electromagnetic interference for stable operation in high-noise environments
- Stainless Steel Housing: Resists impact, abrasion, and corrosion for extended service life
- 2-Wire AC/DC Operation: Flexible voltage compatibility from 20–250V AC/DC with fast response at 65 Hz
- Micro QD Connector: Quick-disconnect plug for rapid installation and field maintenance
- Normally Open Output: Standard switching logic compatible with PLC and relay interfaces
Technical Specifications
This sensor integrates seamlessly into Allen-Bradley control systems and supports both industrial AC and DC power supplies. Maximum load current of 25 mA ensures direct PLC interfacing. Global certifications (UL, CE, C-TICK, KC) confirm compliance with safety and EMC standards.
Typical Applications
- Position sensing on conveyor systems and material handling equipment
- Part presence detection in assembly lines and packaging machinery
- Metal object detection in chemical, food, and pharmaceutical processing
- Proximity switching in robotics and automated inspection systems
- Status monitoring in wet, corrosive, or high-vibration industrial environments
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix, ControlLogix, and MicroLogix PLC systems
- Rockwell Automation I/O modules with discrete DC input capability
- 24V DC and AC-powered industrial control panels
- Standard relay and contactor circuits
- EtherNet/IP networked automation architectures
Replaces / Drop-In Replacement For
- Earlier 871TM series variants with identical mounting and connector specifications
- Verify compatibility with your system integrator or controls engineer before ordering
Works With
- Studio 5000 and RSLogix 5000 programming environments for logic configuration
- Micro QD (AC) quick-disconnect connector ecosystem
- Discrete input modules across Rockwell Automation I/O product line
- Standard industrial AC/DC relay circuits and soft starters
