Guide to UV Measurement
Static Measurements
Static measurements are made with the instrument positioned at a single location. Typically, the purpose of static measurement is to provide long-term information about the condition of a lamp -- any changes that may occur in the overall radiant power output, focus conditions, or changes in bulb or reflector. If the radiant energy detected is altered, then, by inference, it is altered at the work surface. Static measurement methods also include instruments with hand-held probes, which are inserted into the field of exposure. Static measurements can record irradiance at a location, and spectral distribution, but not energy, because there is no relationship to an exposure time interval.