The Keyence FU-93 is a specialized liquid-level-detection fiber unit engineered for applications where accurate fluid presence sensing is critical. Unlike conventional contact sensors, the FU-93 uses a reflective wetted-type detection method, meaning the fiber tip directly interacts with liquid surfaces to confirm the presence or absence of fluid. This design ensures high sensitivity and minimizes false detections, making it particularly well-suited for monitoring transparent or semi-transparent liquids in industrial tanks, pipes, or reservoirs.

Built with durability in mind, the FU-93 incorporates a fluorocarbon polymer section that allows a minimum bend radius of 40 mm, alongside a fiber component capable of bending down to 25 mm. This flexibility provides engineers and technicians with greater freedom when routing the unit into tight or complex machine assemblies. At the same time, the fluorocarbon polymer adds resistance against aggressive chemicals, making the unit ideal for environments where exposure to solvents, coolants, or other reactive fluids is common.

The 2-meter fiber unit is delivered in a free-cut format, enabling customization to specific installation lengths without compromising performance. With a compact √∏1.3√ó2 mm diameter, the FU-93 offers a space-saving solution that integrates easily into existing systems, even when installation space is limited. Despite its slim structure, it delivers consistent optical performance, ensuring that liquid-level detection is both stable and repeatable across applications.

A major benefit of the FU-93 is its versatility. Whether applied in semiconductor processing, chemical production, food and beverage equipment, or pharmaceutical manufacturing, it provides dependable results while reducing maintenance needs. Unlike mechanical float-type level sensors, the FU-93 has no moving parts, eliminating the risk of mechanical wear, sticking, or failure. This contributes to long-term operational reliability and lowers overall system downtime.

In summary, the Keyence FU-93 offers a compact, chemically resistant, and highly adaptable liquid-level detection solution. By combining a wetted reflective detection method with robust construction, flexible installation options, and long-term durability, it provides industries with a dependable tool for precise fluid monitoring and process control.