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Pepperl+Fuchs RL31-8-2500-IR/73c/136 Retroreflective Sensor for industrial automation

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Pepperl+Fuchs RL31-8-2500-IR/73c/136

by Pepperl+Fuchs

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OverviewThe Pepperl+Fuchs RL31-8-2500-IR/73c/136 is a sophisticated retroreflective photoelectric sensor crafted for accurate and robust performance in demanding industrial settings. This advanced sensor offers dependable object sensing across considerable distances, leveraging infrared technology. Its sturdy build, along with adaptable output choices and an expansive operational temperature range, positions it as an excellent solution for diverse automation tasks. Whether your application requires consistent functionality in challenging conditions or flexible integration with intricate control systems, the RL31-8-2500-IR/73c/136 provides unmatched accuracy and extended operational life, guaranteeing smooth integration and increased productivity.Key Features Extensive 2.5 m Detection Range Achieves reliable, long-distance sensing when paired with suitable reflectors, making it ideal for larger conveyor systems and broad work areas. Advanced Infrared LED Illumination Ensures consistent and stable detection capabilities, significantly reducing interference from ambient light and boosting reliability in varying lighting conditions. Flexible PNP Output (NO + NC) Offers both normally open and normally closed configurations, providing exceptional adaptability for integration with various Programmable Logic Controllers (PLCs) and control systems. Secure M12 Connector (4-pin) Guarantees a swift, secure, and robust electrical connection, simplifying installation and minimizing downtime for maintenance. Compact RL31 Housing Design Features a durable and space-efficient rectangular enclosure from the RL31 series, allowing for effortless installation in restricted spaces without compromising performance or resilience. IP67 Environmental Protection Rating Fully sealed and safeguarded against dust penetration and temporary water immersion, ensuring reliable operation even in harsh industrial environments susceptible to moisture and particulate matter. Technical Specifications Model: RL31-8-2500-IR/73c/136 Part Number: 207544 Sensor Type: Retroreflective photoelectric sensor Sensing Range: 0.05 m to 2.5 m (with appropriate reflector) Light Source: Infrared LED Output Type: PNP, Normally Open + Normally Closed (NO/NC) Connection: M12 connector, 4-pin Voltage Supply: 10–30 V DC Switching Frequency: ≤ 250 Hz Housing Material: High-grade plastic (rectangular RL31 series) Protection Rating: IP67 Operating Temperature: -25°C to +55°C Applications Conveyor Line Monitoring Accurately detects the presence or absence of items on conveyor belts, optimizing product flow and preventing obstructions. Packaging Equipment Essential for precise product counting, positioning, and guaranteeing proper sealing in high-speed packaging operations. Automated Warehousing Systems Crucial for object identification, pallet tracking, and ensuring safe and efficient movement within automated storage and retrieval systems. Pallet and Object Alignment Provides vital feedback for robotic systems and automated guided vehicles (AGVs) to ensure accurate placement and alignment. Reflective Sensing in Demanding Conditions Engineered to operate reliably in challenging industrial settings where dust, moisture, and temperature fluctuations are common. Why Choose This Model?The Pepperl+Fuchs RL31-8-2500-IR/73c/136 stands out as a superior selection for industrial automation due to its exceptional combination of innovative features and robust construction. Its capacity for long-range detection within a compact footprint ensures it can be integrated into a wide variety of applications without significant spatial limitations. The inclusion of an infrared LED light source means consistent and dependable performance even in environments with fluctuating ambient light, a critical factor for maintaining operational continuity. Furthermore, the dual PNP output offers unmatched flexibility, allowing for effortless integration into virtually any control system, thereby streamlining automation processes.Order NowEnhance your industrial automation with the reliable and high-performance Pepperl+Fuchs RL31-8-2500-IR/73c/136 retroreflective sensor. Contact us today to place your order or to learn more about how this sensor can benefit your specific application.FAQWhat is the maximum sensing range of the RL31-8-2500-IR/73c/136?The sensor offers an extended sensing range of up to 2.5 meters when used with a suitable reflector.Can this sensor operate in dusty environments?Yes, with an IP67 protection rating, the RL31-8-2500-IR/73c/136 is fully protected against dust ingress and can reliably perform in harsh industrial environments.What type of output does this sensor provide?It features a flexible PNP output with both normally open (NO) and normally closed (NC) configurations, allowing for broad compatibility with various control systems.

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PRODUCT DETAILS

Pepperl+Fuchs RL31-8-2500-IR/73c/136

Overview

This is a genuine Pepperl+Fuchs component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Pepperl+Fuchs catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Pepperl+Fuchs automation ecosystem

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Pepperl+Fuchs equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Pepperl+Fuchs catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Pepperl+Fuchs platform with documented conversion notes

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: RL31-8-2500-IR/73c/136

  • Part Number: 207544

  • Sensor Type: Retroreflective photoelectric sensor

  • Sensing Range: 0.05 m to 2.5 m (with appropriate reflector)

  • Light Source: Infrared LED

  • Output Type: PNP, Normally Open + Normally Closed (NO/NC)

  • Connection: M12 connector, 4-pin

  • Voltage Supply: 10–30 V DC

  • Switching Frequency: ≤ 250 Hz

  • Housing Material: High-grade plastic (rectangular RL31 series)

  • Protection Rating: IP67

  • Operating Temperature: -25°C to +55°C

Applications

  • Conveyor Line Monitoring

    Accurately detects the presence or absence of items on conveyor belts, optimizing product flow and preventing obstructions.

  • Packaging Equipment

    Essential for precise product counting, positioning, and guaranteeing proper sealing in high-speed packaging operations.

  • Automated Warehousing Systems

    Crucial for object identification, pallet tracking, and ensuring safe and efficient movement within automated storage and retrieval systems.

  • Pallet and Object Alignment

    Provides vital feedback for robotic systems and automated guided vehicles (AGVs) to ensure accurate placement and alignment.

  • Reflective Sensing in Demanding Conditions

    Engineered to operate reliably in challenging industrial settings where dust, moisture, and temperature fluctuations are common.

Why Choose the RL31-8-2500-IR/73c/136?

The Pepperl+Fuchs RL31-8-2500-IR/73c/136 stands out as a superior selection for industrial automation due to its exceptional combination of innovative features and robust construction. Its capacity for long-range detection within a compact footprint ensures it can be integrated into a wide variety of applications without significant spatial limitations. The inclusion of an infrared LED light source means consistent and dependable performance even in environments with fluctuating ambient light, a critical factor for maintaining operational continuity. Furthermore, the dual PNP output offers unmatched flexibility, allowing for effortless integration into virtually any control system, thereby streamlining automation processes.

Availability & Shipping

  • In stock: RL31-8-2500-IR/73c/136 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every RL31-8-2500-IR/73c/136 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Pepperl+Fuchs

The sensor offers an extended sensing range of up to 2.5 meters when used with a suitable reflector.

Machine down? We ship parts the same day.

New, surplus, and refurbished Pepperl+Fuchs inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

CUSTOMER REVIEWS

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Independent Supplier Notice

PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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