Description

The Fireye 85UVF1-1QD is Honeywell’s premier ultraviolet (UV) flame safeguard controller, engineered for critical combustion safety in industrial burners and boilers. As part of Fireye’s legacy 85 Series, this Honeywell Fireye 85UVF1-1QD integrates high-sensitivity UV scanner technology with fail-safe logic to detect flame presence, preventing fuel valve activation without verified ignition. Designed for gas, oil, or dual-fuel applications, it features a field-proven microprocessor architecture that executes 15 self-diagnostic checks per second, complying with NFPA 85/86 standards and SIL2 safety integrity. The 85UVF1-1QD model supports single-point flame monitoring with 0.5–3-second adjustable response times, minimizing false lockouts while ensuring rapid shutdown during flame failure. Its ruggedized design withstands vibration (5g @ 10–150Hz) and ambient temperatures from -40°C to 80°C, making it indispensable for power plants, refineries, and process heating systems.

Fireye 85UVF1-1QD

Technical Specifications

Main Features and Advantages

Flame Safety Reliability: The Honeywell Fireye 85UVF1-1QD employs a spectral-specific UV phototube that ignores visible light and infrared radiation, ensuring immunity to false signals from hot refractories or sunlight. Its dynamic sensitivity adjustment compensates for scanner aging or lens fouling, maintaining detection accuracy over 50,000+ operating hours.

Advanced Diagnostics: Continuous circuit monitoring checks scanner integrity, power supply stability, and relay functionality. Audible alarms and LED status codes (per NFPA code requirements) provide instant fault localization—critical for reducing mean-time-to-repair (MTTR).

Operational Flexibility: Features include manual programming bypass for maintenance, built-in flame relay test mode, and a universal 120VAC power supply. The quick-disconnect terminals simplify wiring, while optional Modbus integration enables remote status monitoring via DCS.

Fireye 85UVF1-1QD

Application Field

The Fireye 85UVF1-1QD excels in high-risk combustion environments:

Power Generation: Safeguards auxiliary boilers and duct burners in combined-cycle plants, ensuring compliance with ASME CSD-1.

Petrochemical Processing: Monitors refinery flare stacks and reformers, utilizing UV technology to detect low-emissivity flames in high-humidity conditions.

Industrial Steam Systems: Protects package boilers in food/pharmaceutical facilities with SIL2-certified shutdown logic.

Thermal Oxidizers: Controls waste-gas incinerators where erratic flame patterns demand sub-second response.

Related Products

65UV-5: Compact UV scanner for small burners

85UV5-1QD: Multi-burner version with 4 flame channels

R7989A1001: Replacement UV phototube

E170: Modbus communication module

EP310: Flame amplifier for IR/visible light detection

90UV1-1QD: Successor model with enhanced diagnostics

Installation and Maintenance

Pre-installation preparation: Verify burner fuel type compatibility with 85UVF1-1QD‘s programming. Isolate power before mounting. Position UV scanner within 30° of flame axis, avoiding quartz lens exposure to >120°C surfaces. Use shielded cable for scanner wiring with separate conduit from AC lines.

Maintenance recommendations: Clean scanner quartz weekly with alcohol in dusty environments. Test safety interlocks monthly via integrated simulator. Replace UV tubes every 24 months or after 8 lockouts. Calibrate sensitivity annually using Honeywell’s E180 test kit.