Full-Metal Cylindrical Inductive Proximity Sensors PRF Series

Product Overview

The PRF Series cylindrical proximity sensors are designed with a full-metal housing and sensor head, constructed from durable stainless steel 303. These sensors are engineered for exceptional resistance to deformation, corrosion, and wear, making them ideal for demanding environments such as food and beverage manufacturing, chemical processing, and metalworking industries. With a robust 0.8 mm thick metal sensor head, these sensors can withstand high levels of impact, ensuring long-lasting performance. Additionally, the 360° ring-type operation indicator allows users to easily monitor the operational status from any angle.

Key Features

• Durability and Strength: The stainless steel 303 construction of both the housing and sensor head ensures high resistance to impact, wear, and corrosion, making these sensors suitable for harsh industrial environments.
• Spatter Resistance: Models with a PTFE coating are available to prevent malfunctions caused by welding spatter, adding an extra layer of protection in metalworking and welding applications.
• Reduced Malfunctions: The sensor design minimizes the risk of malfunctions due to aluminum chips, making it reliable in environments where metal debris is common.
• Operation Indicator: A 360° ring-type red LED indicator provides clear visual feedback of the sensor's operation status, improving usability and monitoring efficiency.
• Oil Resistant Cable: Equipped with an oil-resistant cable, the sensors are well-suited for environments with exposure to lubricants or other industrial fluids.
• IP67 Protection: Rated with an IP67 protection structure according to IEC standards, these sensors are fully protected against dust ingress and can withstand temporary submersion in water, ensuring reliable operation even in challenging conditions.

Safety Considerations

To ensure safe and proper operation, adhere to the following safety guidelines:

• Fail-Safe Installation: Install a fail-safe device when using the sensor in applications where failure could result in serious injury or significant economic loss, such as in nuclear power control, medical equipment, or transportation.
• Environmental Restrictions: Avoid using the sensor in locations with flammable, explosive, or corrosive gases, or in areas exposed to high humidity, direct sunlight, or significant vibration.
• Handling Precautions: Do not disassemble or modify the sensor, and avoid connecting or repairing the unit while it is connected to a power source.

Cautions During Use

To maintain the sensor's performance and longevity, consider the following precautions during use:

• Power Supply: Use a 12-24 VDC power supply with proper insulation and limited voltage/current. The power supply should be activated 0.8 seconds before use.
• Wiring: Minimize wire length and keep it away from high-voltage lines to prevent noise and surges. Avoid installation near equipment that generates strong magnetic fields or high-frequency noise.
• Surface Care: Handle the sensor carefully to avoid scratching or damaging the PTFE coating, especially in spatter-resistant models.

Installation Guidelines

Proper installation is crucial for the sensor's optimal performance:

• Correct Positioning: Install the sensor according to the specified environment and conditions. Ensure that the installation is secure to prevent movement and potential malfunction.
• Wire Handling: Avoid pulling or bending the cable with excessive force, which could damage the water resistance or lead to fire hazards due to broken wires.
• Wire Extension: If extending the wire, use AWG 22 or thicker cables, ensuring the total length does not exceed 200 meters.

Connections

The sensors offer versatile connection options:

• General Wiring: The load can be connected in any direction. Ensure the load is wired before power is supplied to the sensor.
• Cable Connector Type: For cable connector models, securely fasten the connector to avoid exposing the threads and ensure proper operation.

Performance and Testing

The PRF Series sensors are designed to maintain high performance under various conditions:

• Response Frequency: The response frequency varies by model, with the Ø 8 mm sensor offering 200 Hz and the Ø 30 mm sensor operating at 50 Hz.
• Durability Testing: The sensors undergo rigorous durability tests, including continuous impact and metallic brush tests, ensuring they can withstand harsh operational environments.
• Electromagnetic Resistance: These sensors are resistant to electromagnetic interference, allowing reliable operation near welding equipment and other sources of strong noise.

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