V5FF-GR-610 is a high‑temperature, diffuse reflective glass fiber sensor head with M6 threaded body, designed for close‑range detection of small objects in harsh environments such as filling, sealing, and general automation lines. It is used together with a separate fiber amplifier, which provides the light source, gain adjustment, and output to the PLC.
 
Key points and typical functions:
Optical type: diffuse reflective (emitter and receiver on the same head), detecting targets by reflected light from the object surface.
Mechanical form: compact M6 screw‑type head for easy mounting into brackets or machine plates, with glass fiber cable (approx. 2.9 mm outer diameter) suitable for routing through tight spaces.
Temperature capability: glass fiber construction intended for elevated temperatures (commonly up to around 350°C at the sensing end, while the amplifier remains in a standard ambient area).
Typical performance: nominal sensing distance around 80 mm and minimum detectable object in the 0.05–0.1 mm range, allowing detection of small features, wires, or edges when correctly aligned and tuned.
Applications: presence/absence checking of caps or fill levels, small‑part detection on feeding tracks, label or edge detection near hot processes, and general proximity sensing where standard plastic fiber or molded photoelectric sensors cannot survive.