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FIREYE 85UVF1A-1QD
Product Name
Phoenix II integrated ultraviolet flame scanner.
Product Introduction
This scanner detects ultraviolet radiation from fossil-fuel, gas, oil and low-NOx burner flames. It combines a solid-state UV sensor, signal processor, flame relay and self-diagnostics in one cast-aluminum housing, eliminating the need for a separate flame amplifier.
Detailed content
Technical Specifications
- UV detection band: 295–340 nm
- Power input: 24 VDC nominal, approximately 200 mA
- Flame relay: SPST normally open, automatically set ON/OFF thresholds
- Fault relay: SPST normally closed
- Analog output: 4–20 mA optically isolated flame strength signal
- Electrical connection: 8-pin quick-disconnect with compatible multi-conductor cable
- Flame failure response time: selectable, commonly 1–4 s depending on configuration
- Ambient temperature: -40°C to +65°C
- Internal scanner temperature rating: up to +82°C
- Humidity: 0–95% relative, non-condensing
Functional Features
- Microprocessor-based UV flame recognition with flicker analysis
- Automatic sensor gain selection and target flame learning
- LED status for flame signal, relay state, ready, fault and mode
- Full self-diagnostics and electronic self-check
- Integrated relay operation without external flame amplifier
Application Scenarios
- Industrial gas and oil burners
- Duct burners and process heaters
- Refinery process burners and waste-gas units
- Incinerators, low-NOx burners and boiler flame safeguard systems
Performance Parameters
- Relay contact rating: up to 2 A at 30 VDC or 2 A at 230 VAC resistive
- Analog load capability: up to 750 ohms for 4–20 mA loop
- Purge air: approximately 4 SCFM clean dry air at standard mounting flange; higher airflow for hot, dusty or high-radiation environments
- Approvals: FM, UL/c and CE; selected versions support ATEX or Division/Zone ratings
Material Composition
- Housing: cast aluminum with gray polyester powder coat
- Optical window and UV sensor assembly rated for combustion ultraviolet band
- Quick-disconnect connector with shielded multi-conductor cable
Structural Characteristics
- Integrated scanner body with sight pipe or fiber-optic sighting options
- 8-pin disconnect for power, relay and analog signal
- Gasketed enclosure design for combustion environment service
Working Principle
UV emissions from the flame strike the solid-state sensor. The processor evaluates intensity and flicker frequency, compares the result with stored target characteristics, energizes the flame relay when a valid flame exists, and activates the fault relay when detection, self-check or hardware conditions are abnormal.
Installation Requirements
- Mount with proper sight pipe, fiber optic assembly or flange per Fireye orientation drawing
- Supply clean, dry purge air where furnace heat, dust or radiation demands cooling
- Use shielded cable and correct 8-pin quick-disconnect wiring
- Verify optical path is free from obstructions, deposits and foreign light sources
Usage Precautions
- Never operate without required purge air when specified by the burner layout
- Keep optical window clean; contaminated optics reduce UV sensitivity
- Test flame relay and fault relay during startup and periodic combustion safety inspections
- Replace only with same model and FFRT configuration approved for the burner management system
