UV Radiometry for Irradiance Measurement and Process Validation

A UV process is specified in irradiance and dose, but the part never sees the number on the controller — it sees what arrives through the light guide, the lens, the working distance and the ageing of the lamp. Radiometry closes that gap: measuring at the tip, at the cure site or inside the cure-ring fixture, at qualification and on a schedule, and writing the value down. In a validated plant that record is what proves the process has not moved.

A radiometer that does not match the source measures the wrong thing. A broad-spectrum lamp and a monochromatic LED need different sensors and different calibration; a narrow LED beam has to be caught at the centre of the detector at the right focal height or the peak is missed; and a number without traceability or a calibration date is not evidence. Measuring where it is convenient — at the lamp, not the part — hides light-guide losses that are the usual reason a cure gets weaker.

ETIA matches the radiometer to the source. For the S2000 Elite and S2000, the OmniCure R2000 calibrates the system in a closed loop and, with 2, 3, 5 and 8 mm light-guide adapters, measures at the tip; Cure-Site and Cure-Ring detectors on the same R2000 measure at the bond itself or inside a cure-ring fixture, single or dual channel. For the LX500 and its V3 LED heads, the OmniCure LS200 measures irradiance from 50 mW/cm² to 40 W/cm² (or optical power from 1 to 2000 mW with the LS200P), ±10% with 1 mW/cm² resolution, NRC-traceable, on a one-year calibration cycle; the Beam Positioning Kit holds the sensor at the focal height, and the LM2011 light meter makes the same sensor a stand-alone instrument. The result is one measured value per station, with a date, that a validation file can cite.

OmniCure® R2000 is recommended with S Series lamp systems and OmniCure® LS200 with LX500 LED systems, so the sensor, the calibration and the positioning match the source being verified; cure-site and cure-ring detectors add measurement at the bond for validated medical assembly.

As an authorized OmniCure® distributor, ETIA supports application review, product selection, genuine supply, installation, training, troubleshooting, and long-term service.

ETIA helps customers translate UV curing requirements into practical, reliable production solutions.