Product Overview
The Fireye 65UV5-1004QD is a rugged UV flame scanner designed for demanding industrial burner management and furnace applications. With a fast 4-second flame failure response time (FFRT) and a 4-20 mA analog output, this module provides precise flame detection and status indication. Its cast aluminum housing with black polyester powder coat finish ensures durability in harsh environments, while the NEMA 4X and IP66 rating protects against moisture and dust ingress.
Technical Specifications
The Fireye 65UV5-1004QD delivers reliable performance backed by the following key parameters:
| Parameter |
Value |
| Input Power |
24 Vdc, +20% / -25%, 3.8 Watts |
| Analog Output |
4-20 mA DC, max load 750 ohms |
| Flame Failure Response Time |
4 seconds |
| Mounting |
1" NPT female pipe mount with 3/4" NPT cooling air connection |
| Electrical Connection |
8-pin quick disconnect connector |
| Temperature Rating |
-40°F to +150°F (-40°C to +65°C) |
| Weight |
2.5 kg (5.5 lbs) |
| Hazardous Classifications |
Class I, Div 2, Groups A-D; Class II/III, Div 2, Groups F,G; Ex II 3 G/D Ex nA IIC T4A |
Relay outputs include a flame relay (SPDT, N.O./N.C.) and a fault relay (SPST, N.O.) with contact ratings up to 2 A at 30 Vdc or 240 Vac. Status is provided via internal LEDs for 'Flame Signal' and 'Fault Indication'.
Industry Applications
The Fireye 65UV5-1004QD excels in applications where rapid flame failure detection is critical to safety and process continuity. Typical use cases include:
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Industrial Boilers and Burners – Monitors flame presence in gas or oil-fired burners, triggering a safety shutdown within 4 seconds of flame loss.
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Furnace and Kiln Combustion Control – Provides accurate flame verification in high-temperature environments, with cooling air connection to maintain optimal scanner temperature.
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Chemical and Petrochemical Plants – Reliable operation in hazardous areas (Class I, Div 2) where flammable gases or vapors may be present.
The integrated UV sensor and 4-20 mA output allow easy integration into existing burner management systems, reducing nuisance trips and improving overall uptime.
Installation & Setup Guidance
Proper installation of the Fireye 65UV5-1004QD ensures optimal flame detection. Use a 1" NPT female pipe mount on the sight pipe, and connect a 3/4" NPT cooling air supply if required. For electrical connection, utilize the 8-pin quick disconnect connector with the recommended 59-598 cable (8-conductor #18 AWG, braided shield, PLTC-ER rated). Mount the scanner so it has a clear line-of-sight to the flame, avoiding obstructions and excessive heat. Ensure the cooling air supply is clean, dry, and cool; typical flow is 4 SCFM, up to 15 SCFM near upper temperature limits.
Maintenance & Reliability
To maintain peak performance of the Fireye 65UV5-1004QD, follow these simple guidelines:
-
Inspect the lens periodically for dirt or soot buildup; clean with a soft, dry cloth.
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Check cable connections for corrosion or wear; replace the 59-598 cable if damaged.
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Verify cooling air flow if the scanner operates near its temperature limits; insufficient cooling can reduce lifespan.
The rugged cast aluminum housing and IP66 rating minimize environmental wear, while the FM approval ensures safety compliance in critical applications.
Troubleshooting & Common Issues
When the Fireye 65UV5-1004QD fails to detect flame or produces erratic output, check the following:
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No flame signal LED – Verify power (24 Vdc) and that the scanner has an unobstructed view of the flame.
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Fault LED lit – Indicates internal fault or cable issue; inspect the 8-pin connector and wiring.
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4-20 mA output out of range – Confirm load resistance is below 750 ohms and that the power supply is within tolerance (+20%/-25%).
If problems persist, replace the scanner or consult the manufacturer's manual for advanced diagnostics.