61-6872-5 Fireye Fiber Optic

Overview

The Fireye 61-6872-5 is a high-quality quartz fiber optic bundle designed to transmit flame radiation in industrial burner applications where a direct line of sight is obstructed. This assembly is specifically engineered for use with Fireye InSight II, 95UV, 85UV, and 45UVFS flame scanners, allowing the electronics to be mounted safely outside the burner windbox while the fiber optic probe extends into the combustion zone.

Features

• Quartz optics provide superior transmission of ultraviolet (UV) flame signals compared to glass alternatives.
• Flexible stainless steel outer tubing protects the delicate fiber bundle from mechanical damage and harsh environments.
• High-temperature resistance allows the “hot” end of the bundle to withstand temperatures up to 400°C (752°F).
• Color-coded and etched markings (H for hot, C for cold) ensure correct orientation during installation.
• Specifically designed to navigate around internal burner components like vanes and air compartments that would otherwise block standard scanners.

Specifications

• Model Number: 61-6872-5
• Nominal Length: 5 feet (1524 mm)
• Material: High-temperature quartz fibers enclosed in flexible stainless steel
• Maximum Temperature (Hot End): 400°C (752°F)
• Compatible Scanners: InSight II (95DSS3), 95UV, 85UV, 45UVFS
• Minimum Bend Radius: 10-inch (254 mm) loop to avoid fiber breakage
• Tension Limit: Maximum 30 lbs during installation

Applications

The 61-6872-5 is primarily used in power generation, industrial boilers, and process heating systems. It is essential for monitoring individual burner flames in complex furnace environments where shifting sightlines, tilting burners, or mechanical obstructions prevent the use of surface-mounted scanners. It is widely employed in utility boilers where detecting a specific flame within a larger fireball is necessary for safety and system management.