Description
Fireye 48PT2-1007 | Infrared Lead Sulfide Flame Scanner
Dynamic Product Introduction
Nuisance burner trips on heavy industrial boilers often trace back to degraded infrared cell sensitivity rather than actual combustion failure. When an aging burner management system starts dropping flame signals during multi-fuel firing transitions, adjusting amplifier gain rarely fixes a spent lead sulfide phototube or a clouded sight glass. Implementing the Fireye 48PT2-1007 resolves this optical degradation directly, restoring precise flicker discrimination without requiring burner front-plate engineering overhauls.
In field refits, utilizing this exact-match infrared scanner maintains strict safety interlock response times while ignoring steady background refractory glow. (Though verifying proper cooling air purge pressure to keep the optical path clear remains non-negotiable.) It handles harsh burner deck environments dependably, keeping continuous-duty process heaters locked safely in service.
48PT2-1007
Key Technical Specifications
| Technical Parameter | Specification Detail |
| Device Category | Infrared (IR) Flame Scanner |
| Series Compatibility | Fireye Burner Management Amplifiers (e.g., Flame-Monitor, 65UV/IR series) |
| Sensor Type | Lead Sulfide (PbS) infrared photoconductive cell |
| Spectral Response | Infrared band optimized for flame flicker frequency (typically 800 to 1500 nanometers) |
| Housing Construction | Rugged cast aluminum enclosure with heat-resistant finish |
| Operating Temperature | -40^\circC to 70^\circC (housing threshold) |
| Cooling Provision | 1/8-inch NPT threaded connection for purge air inlet |
| Mounting Type | Standard 1-inch NPT threaded swivel mount |
Global Sourcing & Live-Test SOP (Transparency Core)
Procuring safety-critical combustion hardware demands rigorous optical and electrical verification to guarantee plant reliability.
- Inbound Verification: Incoming inventory undergoes comprehensive serial number tracing, OEM hologram and anti-counterfeit badge audits, and manufacturing date code checks.
- Live Simulation: Qualified units are mounted onto a dedicated test stand equipped with a modulated infrared flicker source to verify cell sensitivity and frequency response.
- Diagnostics: Technicians execute signal output voltage checks, electrical isolation testing, and thermal soak evaluations to catch latent lead sulfide cell aging prior to dispatch.
- Final Prep: Optical elements are cleaned with solvent-grade agents, fitted with protective end caps, and sealed inside heavy-duty anti-static barrier bags.
The Field Engineer’s Pitfall Guide
❗ Purge Air Omission and Optical Blindness: Failing to maintain a continuous purge air supply will cause flyash, oil mist, and carbon particulate to coat the lens assembly, choking out the infrared signal. I once saw a boiler plant drop off line during a morning ramp because an un-purged scanner blinded itself within hours. Always verify clean, dry purge pressure before light-off.
❗ Hot Refractory Background Masking: Unlike ultraviolet scanners, infrared detectors are highly sensitive to background heat. If the scanner sights directly onto glowing brickwork instead of the active flame flicker envelope, it may fail to drop out on flame failure. Always verify proper sighting alignment during initial commissioning.
❗ Improper Shielding on Long Cable Runs: Running low-voltage IR scanner wiring parallel to high-voltage igniter or variable frequency drive cables induces electrical noise that mimics flame flicker dropouts. Always use dedicated, foil-shielded cable grounded strictly at the control cabinet termination.
Intent-Driven FAQ
Will this infrared scanner interface directly with my existing Fireye amplifier chassis?
Yes, the 48PT2-1007 is designed to drop straight into compatible Fireye burner management loops, maintaining matching signal characteristics and voltage thresholds.
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 listing explicitly details the exact hardware condition tier.
Can this scanner handle high ambient temperatures near the burner throat?
Yes, provided an active purge air line is connected. The purge air serves a dual role: keeping the optical lens clean and acting as a thermal barrier against radiant firebox heat.
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 check if my lead sulfide IR cell is losing sensitivity?
You can monitor the DC flame signal voltage across the test jacks on your Fireye amplifier using a high-impedance digital multimeter while the burner is running under stable load conditions to see if signal output has drifted below baseline factory specs.
