This practical guide shows you how to complete a signed, QR-verified Lux / Lighting Verification Report certificate in OhmCert Module #03 and how to troubleshoot non-compliant readings on site.

1. Step-by-Step OhmCert UI Workflow

  1. Open Module #03: Navigate to Lux / Lighting Verification Report from the Dashboard.
  2. Load a 1-Click Standard Annex Preset: Open the blue Standard Annex banner at the top and click a preset (such as "Office / Computer VDT Workstation (500 lx, Uo>=0.60, UGR<=19)") to populate target limits automatically.
  3. Enter Your Field Measurements: Fill in the measured inputs (EN 12464-1:2021 Workplace / Room Category, Measured Average Illuminance Eavg, Measured Minimum Point Illuminance Emin, Target Maintained Illuminance Em Override (optional), Target Minimum Uniformity Uo Override (optional), Measured / Luminaire Rated UGR, Max Glare Limit UGR_L Override (optional), Measured Colour Rendering Index Ra, Room Length L (for Grid Verification), Room Width W (for Grid Verification), Luminaire Height above Workplane Hm, Number of Grid Points Measured, Total Installed Lighting Power (for LPD)). Blank inputs stay neutral PENDING.
  4. Complete the 11-Point Checklist: Grade each item, attach photos if needed, and export the SHA-256 signed PDF certificate.

2. Worked Numerical Field Case Study

Scenario: Office / Computer VDT Workstation (500 lx, Uo>=0.60, UGR<=19) (EN 12464-1 §5.26.2) — Writing, typing, reading, data processing and general open-plan office spaces..

  • EN 12464-1:2021 Workplace / Room Category: Office / VDT Workstation (500 lx | Uo>=0.60 | UGR<=19)
  • Target Maintained Illuminance Em Override (optional): 500 Lux
  • Target Minimum Uniformity Uo Override (optional): 0.60
  • Max Glare Limit UGR_L Override (optional): 19

3. Engineering Troubleshooting: Corrective Actions When a Reading Fails

  1. Clean dusty luminaire diffusers/louvres and replace lumen-degraded fixtures to restore E_avg.
  2. Relocate or add perimeter luminaires where wall/corner grid points pull E_min / E_avg below 0.60.
  3. Fit micro-prismatic diffusers or dark-light parabolic louvres where UGR exceeds the 19 (office) or 22 (industrial) glare limit.

→ Try This Worked Example Live in Module #03 (Lux / Lighting)