Consistent curing requires consistent light intensity. The new ACCU-CAL 50V radiometer is simple to operate and offers repeatable measurement of visible light. The ACCU-CAL 50V can measure visible light energy emitted from lightguides (3.0, 5.0, and 8.0 mm), flood systems, and conveyors. With a spectral sensitivity from 395 to 465 nm (visible portion of the spectrum), the radiometer measures intensities from 1 mW/cm2 to 40 W/cm2. A specially designed photo sensor assembly protects the photo sensor from the high temperatures sometimes associated with today’s high-intensity spot lamps.