Description
Fireye 45UV5-1101 | Ultraviolet Flame Scanner Sensor
Dynamic Product Introduction
Boiler trips during high-demand firing cycles often stem from degrading optical sensor tubes rather than actual fuel delivery failures. When an aging burner management system starts throwing nuisance flame-out faults, recalibrating the amplifier rarely fixes a clouded quartz lens or a spent UV phototube. Deploying the Fireye 45UV5-1101 resolves this optical fatigue directly, restoring precise flame discrimination without requiring burner front-plate redesigns.
In field refits, utilizing this exact-match scanner maintains strict safety interlock timings while preventing false trips caused by background infrared radiation or refractory glow. (Though verifying proper purging air pressure to keep the optical sight tube clean remains mandatory.) It handles harsh burner deck environments reliably, maintaining uninterrupted monitoring loops on continuous-duty combustion equipment.
45UV5-1101
Key Technical Specifications
| Technical Parameter | Specification Detail |
| Device Category | Ultraviolet (UV) Flame Scanner |
| Series Compatibility | Fireye Burner Management Amplifiers (e.g., Flame-Monitor, D-Series) |
| Spectral Response | Ultraviolet band (typically 185 to 260 nanometers) |
| Housing Construction | Cast aluminum enclosure with weather/heat-resistant finish |
| Operating Temperature | -40^\circC to 100^\circC (housing limit) |
| Cooling Provision | 1/8-inch NPT threaded connection for purge air inlet |
| Electrical Interface | Multi-pin industrial connector / flying leads (application dependent) |
| Mounting Type | Standard 1-inch NPT threaded swivel mount |
Global Sourcing & Live-Test SOP (Transparency Core)
Sourcing safety-critical combustion hardware requires treating every optical sensor with rigorous verification protocols to ensure foolproof operation.
- Inbound Verification: Incoming inventory undergoes comprehensive serial number tracing, OEM hologram and anti-counterfeit badge checks, and manufacturing date code audits.
- Live Simulation: Qualified units are mounted onto a controlled burner test stand equipped with an active UV test light source to verify photon sensitivity and response frequency.
- Diagnostics: Technicians execute signal voltage output checks, electrical isolation testing, and thermal soak evaluations to catch latent phototube degradation prior to dispatch.
- Final Prep: Optical lenses are cleaned with solvent-grade agents, capped with protective covers, and sealed inside heavy-duty anti-static barrier bags.
The Field Engineer’s Pitfall Guide
❗ Purge Air Failure and Lens Fouling: Neglecting to hook up continuous purge air to the scanner collar will cause unburned carbon and soot to coat the quartz lens within hours. I once watched an insurance walkthrough get halted because an un-purged scanner blinded itself during light-off. Always verify adequate cooling air pressure before firing the burner.
❗ Hot-Eye and Refractory Glare Misinterpretation: Pointing the scanner directly at glowing hot brickwork instead of the primary flame envelope can trick the circuit into seeing a false “flame-on” signal after burner shutdown. Always sight-verify the physical flame root during initial mechanical alignment.
❗ Cable Shielding and Electrical Noise: Running low-voltage scanner leads in the same conduit tray as high-voltage igniter transformers induces severe signal spikes that mimic flame flicker dropouts. Always use dedicated, foil-shielded cables grounded at the control cabinet end only.
Intent-Driven FAQ
Will this scanner interface directly with my existing Fireye amplifier chassis?
Yes, the 45UV5-1101 is designed to drop straight into standard Fireye wiring loops and compatible amplifier cards, maintaining matching signal voltage characteristics.
Are these units factory sealed or certified surplus stock?
We maintain strict inventories of both factory-sealed OEM surplus and fully recertified, bench-tested units. Each product listing clearly outlines the exact hardware condition tier.
Can this scanner handle high ambient temperatures near the burner throat?
Yes, provided you maintain an active purge air supply. The purge air not only keeps the lens clean but also creates a cooling thermal barrier against radiant heat from the firebox.
What kind of warranty coverage is included with this flame detector?
Every unit is backed by our comprehensive operational warranty, covering optical sensitivity, electrical integrity, and functional performance from day one.
How do I test if my old scanner tube is failing before replacing it?
You can check the DC voltage output across the scanner test jacks on your Fireye amplifier chassis using a high-impedance digital multimeter while the burner is firing to verify if signal strength has dropped below threshold limits.
