SJTI-AL50N2 R2M Through-beam Photoelectric Sensor

Product Overview

The SJTI-AL50N2 R2M Through-beam Photoelectric Sensor is engineered to deliver uncompromising detection accuracy within the most physically constrained industrial environments. Designed specifically for equipment manufacturers who cannot sacrifice performance for size, this sensor combines a highly focused Ø1mm optical beam with an ultra-thin 4.5mm profile. The solid aluminum housing provides immediate tactile assurance of its industrial-grade durability, protecting the internal optics from mechanical impact and daily operational wear. Whether integrated into rapid assembly lines or intricate semiconductor handling equipment, this sensor ensures continuous, error-free target identification. By operating on a standard 12 to 24 VDC supply and offering a reliable NPN Normally Closed output, it integrates smoothly into existing control architectures, providing engineers with a dependable solution for micro-object monitoring.

Technical Specifications

Core Advantages & Engineering Design

Ultra-Compact Form Factor for Confined Spaces

Industrial equipment design increasingly demands miniaturized components that do not interfere with moving mechanical parts. With a housing thickness of merely 4.5mm and overall dimensions of 26×12×4.5mm, this photoelectric sensor is purpose-built for narrow installation gaps. Engineers can mount it flush against machine walls or tuck it safely behind guide rails where standard-sized sensors simply cannot fit. This slim profile reduces the overall footprint of the sensing station, allowing for tighter machine designs and more efficient use of floor space in crowded manufacturing facilities.

Resilient Aluminum Construction

Unlike conventional plastic sensors that may crack under pressure or degrade over time, the SJTI-AL50N2 features a rigid aluminum (AL) metallic enclosure. Running your fingers along the casing reveals a finely machined, smooth finish that speaks to its precise manufacturing. This hardened exterior offers exceptional resistance against accidental impacts from tools, moving workpieces, or continuous machine vibration. The metallic construction also aids in thermal dissipation, ensuring the internal electronic components maintain stable operating temperatures even during continuous 24/7 production cycles in demanding environments.

Precision Detection Capabilities

At the heart of this sensor is a highly concentrated Ø1mm precision beam designed specifically to capture microscopic targets. When paired with an ultra-fast 2-millisecond response time, the sensor guarantees absolute zero missed detections, even when objects are passing through the sensing field at exceptional velocities. This level of optical acuity is critical when monitoring tiny electronic components, fine wires, or miniature mechanical gears. The strong anti-interference capabilities ensure that ambient factory lighting or reflective surfaces nearby do not trigger false signals, maintaining absolute data integrity for the programmable logic controller.

Electrical Reliability in Harsh Environments

Factory floors are inherently unpredictable, often plagued by electrical noise, dust, and fluctuating humidity. This sensor is fortified with an IP54 protection rating, forming a reliable barrier against airborne industrial dust and splashing water. Furthermore, the internal circuitry is safeguarded by built-in reverse polarity and short-circuit protection. If a technician accidentally crosses wires during a rapid maintenance swap, the sensor remains completely unharmed, preventing costly replacement delays and safeguarding the broader electrical network of the machine.

Industry Applications & Technical Support

Versatile Application Scenarios

The unique combination of a focused optical beam and a miniature metallic housing makes this sensor highly sought after across multiple advanced manufacturing sectors. Its primary applications include:

• 3C Electronics Manufacturing: Flawlessly detects the presence of microscopic screws and delicate circuit board components on high-speed assembly conveyors.
• Semiconductor Production: Monitors the precise positioning of lead frames and silicon wafers, where physical contact is strictly prohibited and space is at a premium.
• Smart Automation Systems: Integrates into robotic arms and automated guided vehicles to provide immediate positional feedback in confined mechanical joints.
• Packaging Machinery: Relies on the rapid 2ms response time to count items, verify packaging integrity, and trigger automated sorting mechanisms without missing a single beat during peak production hours.

Comprehensive Engineering Resources

We understand that component selection is only the first step in machine design. To dramatically accelerate your engineering and validation cycles, we provide a complete suite of technical resources. Design engineers have immediate access to highly accurate CAD drawings and detailed 3D product models, allowing for smooth virtual integration into complex machine assemblies before physical prototyping begins. Comprehensive specification sheets detail every electrical and optical parameter, while our dedicated support team offers sample testing and cross-reference substitution services. This ensures that the sensor not only fits perfectly into your mechanical design but also meets every stringent operational requirement of your final product.