Define
Record mounting, environment, visual task, target illuminance and maintenance constraints before comparing fixture families.
Technical project services
Services are organized around measurable inputs, review gates and handover documents—not general claims. Each engagement starts with application conditions and ends with a record the project team can review.
For renovation work, record existing ceiling conditions, circuiting, control topology and access limitations before choosing an apparent one-for-one replacement. For new construction, align fixture nomenclature and driver options with the schedule early enough to prevent substitutions from silently changing the modeled distribution.
| Workstream | Required input | Review output |
|---|---|---|
| Photometric review | Room geometry, mounting height, reflectance and task target | IES/LDT file set, distribution notes and calculation assumptions |
| Optical selection | Luminous flux, CCT, CRI, UGR or beam-angle objective | Fixture-family shortlist with explicit performance boundaries |
| Controls coordination | 0-10V or DALI-2 architecture, sensor zones and emergency sequence | Compatibility questions and commissioning checkpoints |
| Submittal preparation | Schedule, jurisdiction and approved-equal criteria | Document index covering relevant UL, CE or RoHS scope |
Scope boundary: photometric files describe a tested luminaire configuration. Field results still depend on room geometry, surface reflectance, voltage, aiming and control settings; a file alone does not certify achieved illuminance.
Record mounting, environment, visual task, target illuminance and maintenance constraints before comparing fixture families.
Use the matching IES or LDT distribution with stated reflectance, light-loss factors and calculation grid.
Check driver, controls, emergency circuit and sensor behavior against the electrical narrative and sequence of operations.
Review submittals, mockup observations where required, commissioning records and as-built changes before handover.
High efficacy and visual comfort can pull selection in different directions. More lm/W can reduce connected load, while tighter optical control, higher color quality or glare management may alter system power. The service process records that trade-off instead of hiding it.
Send the room type, mounting condition, performance target and controls protocol for a structured first review.