UV Measurement & Process Control

Understanding your instrument (and its limits)• Treat and handle as an instrument• Maintain on daily basis, calibrate & service as required• Users expect the same accuracy as other instruments-currentradiometer technology ± 10%• Optics• Filter and detector specifications• Spatial response (Cosine Response)• Design-Balance between optical stability (minimal solarization) andrepeatable electronic signal level• Electronics• Temperature sensitivity• Sample rates/Data collection speeds• Improvements in electronics since early instruments• User induced errors and comparisons (real vs. perceived)• Comparison to other productsUse your instrument within design specsPICNIC errors: Problem in chair, not in calibration