Not every adhesive formulation was built around a UVA-optimised lamp, and forcing one onto a process it wasn’t qualified against is how a cure schedule quietly stops matching the datasheet.
Full Broadband Where the Metal Halide Lamp Concentrates
The Incure 282047, part of the Incure UV Curing Replacement Bulbs lineup, is a 400W short arc mercury lamp for the F-Series™ UV arc flood curing systems, delivering the complete mercury line spectrum — 254 nm, 313 nm, 365 nm, and 405 nm — where the factory-standard metal halide lamp (282021) concentrates output specifically in the UVA band. Use the 282047 when the adhesive formulation specifies broadband UV activation, requires UVC for surface treatment, or was originally qualified against a mercury arc spectrum rather than metal halide.
Like-for-Like Replacement, No Re-Qualification
Spectral output, arc geometry, and wattage all match what an F-Series™ system running a mercury-arc process was originally characterised against. Installing the 282047 as a direct replacement maintains the irradiance profile the existing cure schedule depends on — any deviation in lamp type, wattage, or arc geometry changes that profile at the curing area and invalidates the current process validation. This is the straightforward swap-the-lamp, keep-the-schedule option for mercury-qualified lines.
Arc Geometry Built for the F-Series™ Reflector
The F-Series™ lamp housing is designed around a short arc point source. A longer or more diffuse arc spreads emission across a wider zone, reducing how efficiently the reflector can redirect that output back to the curing area — the practical effect is a lower average intensity even at the same rated wattage. The 282047’s arc geometry matches what the F-Series™ reflector optics were designed for, delivering full rated intensity at the specified working distance rather than a degraded average across an oversized arc.
Confirming whether a given adhesive’s SDS or qualification data calls for broadband exposure or UVA-only is worth doing before ordering replacement lamps in volume — Email Us with your formulation details and Incure can confirm the right lamp type.
UVC Handling Requirements Apply Here
Because the 282047 produces genuine UVC radiation at 254 nm, it must be operated only within the shielded F-Series™ lamp housing with all guards in place — this is not optional, unlike with the UVC-free metal halide alternative. Rated lamp life is approximately 2,000 hours, with output degrading progressively before failure; allow 2–3 minutes of warm-up before each cure cycle and a minimum 30-minute cooldown before handling. Dispose of spent mercury-containing lamps per local hazardous waste regulations.
Whichever lamp type an F-Series™ line runs, UV shielding and eye protection rated for that lamp’s actual output belong in the same review. See the full Incure F-Series™ UV Arc Flood Lamps this bulb powers, and confirm your team’s Incure Vison™ eyewear is rated for broadband mercury arc output — UVC exposure needs different protection than UVA-only sources.
Shielding Matters More With UVC in the Mix
Because the 282047 emits genuine UVC radiation, the physical shielding around an F-Series™ station running this lamp carries more weight than it does with a UVC-free metal halide configuration. Confirming the housing guards are fully in place before every cure cycle, and that any supplemental containment shielding around the station is rated for broadband exposure rather than UVA-only, is worth building into a standard start-of-shift check on lines running this lamp — a gap that’s harmless with the metal halide alternative is a real exposure risk here.
Same Lamp, Two Compatible Systems
The 282047 fits both the F100 and F400 flood curing systems under a single part number, which simplifies spares planning for a facility running both models on mercury-qualified processes. Rated life is approximately 2,000 hours under standard operating conditions — the same rating as the metal halide alternative, since lamp life at this wattage class is driven more by envelope and electrode design than by spectral output profile.
Confirm Qualification History Before Assuming Either Way
Neither lamp type should be assumed correct by default — the deciding factor is always the adhesive’s actual documented qualification data, not which lamp happens to already be installed or which one seems like the more modern option. A process running the mercury lamp today because that’s simply what shipped with the equipment years ago, with no documented reason it needs broadband exposure, may be a legitimate candidate for switching to the more efficient metal halide option after a proper re-qualification — the 282047 isn’t a permanent commitment, just the correct choice for a process that genuinely needs UVC or full-spectrum output.
A Deliberate Choice, Not a Legacy Default
It’s worth being explicit that specifying the 282047 over the metal halide 282021 isn’t a fallback for older equipment — it’s the correct choice whenever a formulation’s actual qualification data calls for broadband exposure. Many production adhesives, particularly those qualified some years ago or sourced from third-party formulators, were validated against mercury arc spectra specifically, UVC included. Assuming the higher-efficiency metal halide lamp is always the better option and switching without checking qualification history is exactly the kind of change that quietly invalidates a cure schedule without any obvious symptom until a batch fails downstream testing.
For a full assessment of your curing setup, Contact Our Team.
Visit www.incurelab.com for more information.