Product Overview
The Fireye 85UVF1-1QD is an advanced microprocessor-based integrated flame scanner designed for ultra-violet (UV) flame detection in critical combustion systems. As part of Fireye’s Phoenix Series 2 line, the Fireye 85UVF1-1QD offers an all-in-one flame sensor and relay module, eliminating the need for separate flame amplifiers or external thresholding hardware. Its intelligent internal logic enables automatic calibration of ON/OFF thresholds and optimal gain selection, ensuring highly reliable flame monitoring under diverse operating conditions.
With the Fireye 85UVF1-1QD, users benefit from a compact and rugged design that integrates flame detection, self-diagnostics, and relay outputs into a single housing. This makes it ideal for tight installation environments and simplifies wiring and maintenance efforts. While built for UV flame sensing, the 85UVF1-1QD shares heritage with the broader Phoenix Series 2 family of scanners, offering common performance characteristics, modular options, and field-proven reliability across industrial combustion and burner safety systems.
Positioned as a mid-to-high end flame detection device, the Fireye 85UVF1-1QD is tailored for applications demanding both safety integrity and diagnostic transparency. It contributes real value to automation and safety systems by reducing component count, minimizing wiring complexity, and offering high detection confidence in harsh industrial environments. Its microprocessor core, diagnostics, and built-in relay capability place it as a preferred choice for burner management systems (BMS), combustion control loops, and safety instrumented systems (SIS) where dependable flame supervision is mandatory.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 85UVF1-1QD |
| Manufacturer | Fireye |
| Product Type | Integrated UV Flame Scanner / Flame Monitor |
| Flame Detection Spectrum | Ultraviolet (UV) |
| Power Supply | 24 VDC (nominal) |
| Connection Interface | 8-pin Quick Disconnect (QD) connector |
| Flame Failure Response Time (FFRT) | Selectable (multiple preset options) |
| Analog Output | 4–20 mA (flame signal) |
| Operating Temperature | –40 °C to +60 °C (–40 °F to +140 °F) |
| Certifications & Approvals | FM, UL/c, CE |
| Mounting / Mechanical Interface | 1 in. NPT or flanged mount (depending on version) |
| Self-Diagnostics / Fault Reporting | Comprehensive internal diagnostics and self checks |
(If additional parametric data such as sensing distance, spectral window, or housing ingress rating is available in a detailed datasheet, those may be appended.)
Main Features and Advantages
The Fireye 85UVF1-1QD offers a spectrum of benefits that reinforce its standing in demanding combustion systems. Its microprocessor-based design actively monitors flame modulation (flicker) across a wide frequency range. During commissioning, the 85UVF1-1QD captures the amplitude pattern of the target flame and autonomously sets the ON/OFF thresholds and appropriate sensor gain, thereby eliminating manual threshold tuning and reducing the risk of misconfiguration. The self-adjusting capability greatly simplifies startup and commissioning in the field.
Reliable diagnostics is another hallmark: the 85UVF1-1QD continuously monitors its internal circuits and sensor health, generating fault signals when anomalies (such as sensor drift, open circuits, or contamination) are detected. This proactive self-check helps to minimize unplanned downtime and improves transparency for maintenance personnel. The integrated flame relay within the scanner ensures that a discrete output is available without needing an external amplifier or flame discriminator, which reduces the number of devices in the system and streamlines wiring.
The 85UVF1-1QD also features selectable Flame Failure Response Time (FFRT) settings, enabling users to balance between sensitivity and false-trip immunity based on application needs. The Quick Disconnect (QD) connector enables rapid removal or replacement in the field without rewiring, which is especially valuable in tight plant layouts or when servicing. Its robust aluminum housing and industrial-grade components provide strong immunity to vibration, temperature cycling, and harsh ambient conditions.
Because it integrates multiple functions in one robust module, the Fireye 85UVF1-1QD delivers cost savings (by eliminating auxiliary modules), reduced footprint, simplified logistics, and improved system reliability. Its overall package of intelligent calibration, diagnostics, and compact integration gives it a competitive edge in high-stakes burner safety and combustion control systems.
Application Field
The Fireye 85UVF1-1QD finds broad application wherever reliable flame detection is critical to safety, efficiency, and regulatory compliance. In power generation, it is commonly deployed to monitor boiler burners, auxiliary fuel ignition systems, and duct burners, integrating directly with burner management systems (BMS) and supervisory control systems. In oil & gas and petrochemical plants, the 85UVF1-1QD helps supervise flare stacks, incinerators, thermal oxidizers, and process heater burners, offering flame assurance in harsh environments.
In industrial furnaces, process heaters, and thermal oxidizers within the chemical, refinery, and petrochemical sectors, the 85UVF1-1QD ensures rapid detection of flame loss or anomalies, guarding against unsafe fuel accumulation or explosion risks. It is also suitable for waste-to-energy plants, where incinerator flame control must be reliable under variable fuel conditions, and pulp & paper plants, where combustion control is integral to boiler operation.
Because the 85UVF1-1QD integrates diagnostics and automatic calibration, it is also well suited for retrofits and upgrade scenarios — replacing older flame detection systems without a complete reengineering of wiring. In modular boiler systems, district heating plants, and large building combustion systems, the 85UVF1-1QD contributes to safer, simplified installations while maintaining compatibility with modern safety and control architectures.
Related Products
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85UVF1A-1QD: An upgraded or variant version of the same Phoenix II series optimized for expanded spectral response and more certifications.
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85IRF-1QD: Phoenix Series 2 infrared (IR) model that complements the UV-based 85UVF1-1QD, useful for detecting hydrocarbon or gas flames under different operating conditions.
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85UVF1-IQD: Version with inverted quick disconnect orientation or alternate pin configuration for specific mounting layouts.
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85UVF1-K3-1QD: Variant with extended UV spectral sensitivity or special coatings for detection in challenging combustion environments.
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Fireye 59-546-xx Cable: A corresponding 8-pin cable assembly required to interface the 85UVF1-1QD with BMS or control systems; not a scanner, but essential support hardware.
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Fireye Phoenix Amplifier / Flame Module: External modules compatible with the Phoenix family for users requiring discrete flame-signal modules in older systems.
Each of these related models or components complements or extends the capability of the core 85UVF1-1QD scanner, enabling flexible deployment across various burner, sensor, and system architectures.
Installation and Maintenance
Pre-installation preparation: Before installing the 85UVF1-1QD, ensure the mounting location provides a clear optical path to the target flame and is free of obstructions, soot, or radiant heat shielding. Verify the combustion chamber wall thickness, flame viewing port, and alignment offset to maintain proper field-of-view. Confirm ambient temperature, vibration levels, and access for servicing. Check that the 24 VDC supply is stable and filtered, and that the mating 8-pin quick disconnect cable (Fireye 59-546-xx or equivalent) is present and wired. Grounding must be verified to minimize electrical noise and interference. Also confirm that the selected FFRT setting is appropriate to the burner dynamics under local safety rules.
Maintenance recommendations: Periodically inspect the 85UVF1-1QD viewing window (UV filter) for soot, dust, or coating—clean gently with approved solvents to avoid scratching the window. Check the integrity of the quick disconnect connection and wiring for corrosion or loosened pins. During scheduled shutdowns, run the built-in self-diagnostics and verify that any internal fault indicators or alarm thresholds respond correctly. If flame detection anomalies appear, compare 4–20 mA output against expected flame strength curves. Maintain a spare 85UVF1-1QD (or its variant) module to allow rapid swap-out in critical installations. Keep firmware or calibration settings documented so that replacements can be commissioned quickly.
Product Guarantee
The Fireye 85UVF1-1QD is backed by a comprehensive quality assurance and support commitment, reflecting Fireye’s confidence in the reliability and durability of its Phoenix sensor technology. Each unit undergoes factory calibration, burn-in testing, and quality inspection before shipping, ensuring that the 85UVF1-1QD arrives ready for demanding field service. In the event of defects or failures under normal operating conditions, a standard warranty period covers replacement or repair of the device at no cost to the customer. Beyond the warranty, Fireye (or authorized distributors) typically offers extended support contracts, calibration services, and field diagnostics assistance to ensure the 85UVF1-1QD continues performing at peak levels. When clients engage with the 85UVF1-1QD, they gain not only a high-performance flame scanner but also access to trained technical support, documentation, and global service networks, ensuring timely resolution of any issues. This end-to-end guarantee underscores Fireye’s belief in the product’s quality and their commitment to maximizing uptime and safety for customers using the 85UVF1-1QD in critical combustion and burner systems.
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