F-4 Keyence Fiber Optic Sensor Head | M4 Threaded Reflective Fiber Unit

F-4 Keyence Fiber Optic Sensor Head – High-Reliability Reflective Detection

The F-4 is a high-precision, threaded reflective fiber optic sensor head from Keyence, designed for versatile and stable detection in industrial automation. Featuring an M4 threaded design, this fiber unit offers a robust and easy-to-mount solution for detecting target presence in tight spaces or high-speed production lines.

Precision Optics and Flexible Installation

The F-4 fiber unit utilizes a reflective sensing method where both the transmitter and receiver are housed in a single M4 head. This eliminates the need for precise alignment between two separate units, making it ideal for applications with limited mounting space. The fiber cable is designed for high flexibility (R25), allowing it to be routed through complex machine pathways without signal degradation.

Technical Specifications and Performance

• Fiber Type: Reflective (Coaxial type for improved accuracy).

• Housing Design: M4 Threaded stainless steel for secure industrial mounting.

• Fiber Cable Length: 2 meters (standard), which can be cut to length for custom installations.

• Minimum Bend Radius: R25 mm, providing excellent durability against repeated bending.

• Environmental Resistance: Operating ambient temperature range of -40 to +70°C, suitable for varied factory environments.

Optimized Sensing with FS-N Series

When paired with Keyence digital fiber optic amplifiers (such as the FS-N series), the F-4 delivers exceptional sensitivity and long-distance detection. Its coaxial structure ensures that the light beam remains centered, which is critical for detecting small objects or targets through narrow apertures. The threaded body allows for fine-tuning the distance between the sensor and the target to achieve optimal signal strength.