Full-Metal Cylindrical Long-Distance Inductive Proximity Sensors PRFD Series

Product Overview

The PRFD series of cylindrical proximity sensors is designed to meet the rigorous demands of various industrial environments. Available in both standard models and those equipped with IO-Link communication, these sensors feature extended sensing distances and are constructed with full-metal housings and sensor heads made from stainless steel 303. Built for durability, the PRFD series is ideal for applications in industries such as food and beverage manufacturing, chemical processing, and metalworking. The 360° status indicator allows for easy monitoring of the sensor's operation status from any angle, ensuring efficient and reliable performance.

Features

• High Durability: The sensor's stainless steel construction provides excellent resistance to impact and wear, making it suitable for tough industrial conditions.
• Reduced Risk of Malfunction: Designed to minimize the chances of malfunction due to aluminum chips, ensuring stable performance in metalworking environments.
• Spatter-Resistant: A PTFE coating protects the sensor from potential malfunctions caused by welding spatter, extending its operational lifespan.
• 360° Visibility: The ring-type operation indicator, available in all models except the Ø 8 mm, ensures visibility from any angle, allowing for quick status checks.
• Oil Resistant: Equipped with an oil-resistant cable, the sensor is well-suited for use in environments where exposure to oils and lubricants is common.
• Waterproof Construction: The PRFD series is rated IP67, providing robust protection against water ingress, making it suitable for use in wet and humid environments.

Safety Considerations

For safe and effective operation, the following safety guidelines should be observed:

• Critical Applications: Install a fail-safe device when using the sensor in critical applications where failure could result in serious injury or significant economic loss, such as in nuclear power plants, medical equipment, or transportation systems.
• Environmental Restrictions: Avoid using the sensor in environments with flammable, explosive, or corrosive gases, as well as in areas subject to high humidity, direct sunlight, or extreme vibrations.
• Electrical Safety: Ensure all connections are made according to the provided guidelines to prevent fire risks. Never disassemble or modify the sensor to avoid potential hazards.

Installation Considerations

Proper installation is key to the optimal performance of the PRFD series sensors. Consider the following guidelines:

• Correct Installation: Ensure that the sensor is installed according to the environmental conditions and specifications provided.
• Cable Management: Handle the sensor cables carefully, avoiding excessive bending or pulling beyond specified tensile strengths to prevent damage and ensure water resistance.
• Wiring: Use AWG 22 cable or higher when extending the wire, keeping the extension within 200 meters for effective operation.

Operation and Maintenance

To maintain optimal performance and ensure long-term reliability, follow these operational guidelines:

• Power Supply: Use a 12-24 VDC power supply with insulation and limited voltage/current, classified as SELV.
• Wiring Precautions: Minimize the length of wiring and avoid proximity to high-voltage lines to prevent surge and inductive noise. Keep the sensor away from equipment generating strong magnetic fields or high-frequency noise.
• Surface Care: The PTFE coating on the sensor can wear out if rubbed with hard objects. Handle with care to maintain the sensor's spatter-resistant properties.

Ordering Information

When selecting a model from the PRFD series, consider the following attributes:

• Model Types: Available in standard and spatter-resistant variants.
• Connection Options: Choose between cable type and cable connector type models.
• Diameter and Sensing Distance: Available in various diameters (Ø 8 mm, Ø 12 mm, Ø 18 mm, Ø 30 mm) with corresponding sensing distances.
• Cable Specifications: Options for oil-resistant and IEC-standard compliant cables are available.

Durability and Testing

The PRFD series sensors have undergone extensive testing to ensure durability and reliability in harsh environments:

• Continuous Hitting Test: Proven to withstand continuous impact, making it ideal for environments where physical contact is frequent.
• Metallic Brush Test: Demonstrated resilience against wear from metal brushes, ensuring longevity even in abrasive conditions.
• Electromagnetic Resistance: Tested to resist strong electromagnetic fields, such as those generated by welding equipment, without malfunctioning.

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