SJTR-S50N R2M Through-beam Photoelectric Sensor

Product Overview

The SJTR-S50N R2M is a specialized side-facing through-beam photoelectric sensor engineered specifically for automated production environments where installation space is severely restricted. Featuring a remarkably slim 5mm housing, this sensor integrates easily into compact machinery without compromising on detection capability. It delivers a reliable 500mm sensing distance, ensuring consistent identification of micro-objects moving across fast-paced production lines. The device is constructed with a durable PBT, PC, and PVC blend, granting it an IP66 rating to withstand dust and moisture in demanding industrial settings. By combining a minimal physical footprint with rapid 2ms response times, the SJTR-S50N R2M provides engineers and procurement specialists with a dependable component that streamlines equipment design and elevates overall operational efficiency.

Technical Specifications

Core Performance & Design Advantages

Ultra-Compact 5mm Enclosure for Spatial Efficiency

In modern automation, every millimeter of internal equipment space holds immense value. The SJTR-S50N R2M addresses this constraint directly with its 19×10×5mm dimensions. The 5mm ultra-thin profile allows technicians to embed the sensor into exceptionally narrow gaps within complex machinery, such as robotic arms or miniature conveyor tracks. The sensor features a smooth, rigid PBT and PC housing that feels solid to the touch, providing immediate tactile reassurance of its industrial-grade construction. The accompanying flexible 2-meter PVC straight-out cable allows for easy routing through tight machine conduits. This spatial efficiency prevents the need for bulky mounting brackets or significant structural modifications during the assembly process, ultimately reducing mechanical design complexity and saving valuable real estate within the equipment chassis.

2ms Rapid Response for Micro-Object Detection

Speed and accuracy are critical when monitoring components on high-throughput assembly lines. This through-beam sensor operates with a swift 2ms response time, instantly registering the presence or absence of targets passing through its optical axis. Paired with a stable 500mm sensing distance, the focused optical beam precisely identifies micro-objects, preventing missed counts or alignment errors. The NPN Normally Open (NO) output mode integrates smoothly with standard programmable logic controllers (PLCs), ensuring that the control system receives immediate, accurate electrical feedback to maintain continuous, error-free production cycles without frustrating bottlenecks.

Environmental Adaptability & Protection Mechanisms

IP66-Rated Resilience

Industrial manufacturing floors often expose sensitive electronics to airborne particulates, splashing fluids, and fluctuating temperatures. The SJTR-S50N R2M is enclosed in a sturdy housing composed of Polybutylene Terephthalate (PBT), Polycarbonate (PC), and Polyvinyl Chloride (PVC). This material combination achieves a strict IP66 protection rating, completely sealing the internal optics and circuitry against dust ingress and powerful water jets. Whether deployed in a humid processing facility or a dusty machining center, the sensor maintains its structural integrity and optical clarity, minimizing the risk of false triggers caused by environmental interference.

Built-In Electrical Safeguards

Electrical anomalies can cause catastrophic failures in automated systems, leading to costly downtime and maintenance delays. To mitigate these risks, this photoelectric sensor is engineered with integrated reverse polarity and short-circuit protection. If a wiring error occurs during installation or a sudden current surge impacts the 12~24 VDC power supply, the internal safeguards activate immediately to shield the sensor from permanent damage. Operating reliably within a temperature range of -10 to 50℃ and handling up to 100 mA load current, the unit ensures long-term electrical stability across diverse and demanding industrial applications.

Industry Applications

The precise detection capabilities and miniature form factor of the SJTR-S50N R2M make it an indispensable component across several demanding manufacturing sectors. Its consistent optical performance supports critical stages of production, ensuring components are accurately positioned, counted, and verified.

• 3C Electronics Assembly: In the production of smartphones, tablets, and computers, the sensor accurately detects the placement of miniature circuit boards and delicate connectors on fast-moving conveyors, ensuring precise alignment before automated soldering or pressing.
• Semiconductor Manufacturing: The cleanroom environments of semiconductor fabrication require components that do not generate particulate matter while offering extreme precision. This sensor monitors the transfer of silicon wafers between processing stations, preventing collisions and material damage.
• Automotive Parts Inspection: During the assembly of intricate automotive subsystems, such as fuel injectors or electronic control units (ECUs), the sensor verifies the presence of small metallic or plastic components, contributing to strict quality control protocols before final sealing.
• Automated Packaging Systems: Integrated into tight spaces within packaging machinery, the device confirms the successful feeding of packaging materials and the correct ejection of finished goods, maintaining a steady operational flow without mechanical jams.

Quality Assurance & Procurement Services

Stringent Quality Control and Industry Certifications

Consistency and reliability form the foundation of our manufacturing philosophy. The SJTR-S50N R2M is backed by multiple industry patents and national-level safety certifications, reflecting its adherence to rigorous engineering standards. Each unit undergoes a comprehensive industrial-grade quality control process, including thermal cycling, optical alignment verification, and electrical stress testing, guaranteeing excellent durability and a prolonged operational lifespan in the field.

Streamlined Sourcing and Evaluation Support

We understand that validating a new component requires thorough practical testing. To facilitate a smooth evaluation process, we offer complimentary sample applications and on-site demonstration (Demo) support for engineering teams. This allows technical evaluators to verify the sensor's performance within their specific machinery setups before committing to larger volumes. Coupled with our optimized inventory management and rapid delivery protocols, we help organizations accelerate their project timelines while significantly reducing the financial risks associated with component integration and trial phases.