Product Core Brief

• Model: 85UVF1-1QDK3
• Brand: Fireye
• Series: Phoenix 85UVF/IRF
• Core Function: Detects target flame UV emissions and provides safety interlock signals.
• Product Type: Self-Checking UV Flame Scanner
• Key Specs: 24VDC | 295-340nm UV Range | 8-Pin QD Connector
• Condition: New Original / New Surplus

Fireye 85UVF1-1QDK3

Product Introduction

The Fireye 85UVF1-1QDK3 is a high-performance, self-checking flame scanner designed for critical combustion safety applications. This industrial automation unit utilizes a solid-state microprocessor to detect the modulated amplitude (flicker) of ultraviolet emissions in the 295 to 340 nanometer wavelength range.

This replacement module features an internal flame relay with auto-set ON/OFF thresholds, eliminating the need for external remote amplifiers. Equipped with an 8-pin electrical quick-disconnect (QD), it is ideal for pipeline burners, industrial gas systems, and refinery applications.

Key Technical Specifications

Quality Control Process

Every replacement module undergoes strict functional validation. We first verify the 24 VDC power draw using a calibrated Fluke multimeter to ensure internal regulators are stable. Next, we perform UV signal injection testing to confirm the solid-state sensor accurately registers flame flicker frequencies. We then test the internal relay state transitions and verify the 4-20mA analog output linearity. Finally, we inspect the 8-pin QD connector for pin integrity. All units ship in anti-static shielding.

Replacement Pitfall Guide

❗ Execute the Target Flame Learning Procedure. This scanner does not use fixed thresholds. After installation, you MUST use the onboard 4-button keypad and 8-digit LED display to execute the “Target Flame Learning” program. This allows the microprocessor to auto-store the specific flame amplitude and select the optimal sensor gain.

❗ Verify the FFRT Setting. The Flame Failure Response Time (FFRT) defaults to 1 second but is adjustable from 1 to 4 seconds. Ensure this setting matches your burner management system’s safety requirements before putting the unit into service.

❗ Check the QD Cable Compatibility. The “QD” designation means the scanner uses an 8-pin quick-disconnect rather than a captive cable. Ensure you are using the correct mating cable assembly (e.g., 59-546-X series) to maintain the Class I Div 2 hazardous area rating.

❗ Avoid Optical Filter Confusion. The “K3” suffix indicates this unit utilizes an advanced optical filter that extends sensitivity up to 500 nm. Do not substitute this with a standard UV scanner if your specific application (e.g., blast furnace gas) requires this extended spectral range.

Keep these in mind and you’ll cut 90% of rework time.

Fireye 85UVF1-1QDK3

Compatibility Matrix & Benchmarks

• Response Time: Fast UV detection with configurable FFRT (1-4 seconds).
• Signal Output: Continuous 4-20mA flame strength monitoring.