The following tables illustrate the nominal intensities of the Standard UVP Pen-Ray Mercury Lamps when the current feed into the lamp is variable. It also includes the typical temperature generated by the lamp at these currents. The output is measured at a distance of 0.75" (19.1 mm). Emission intensities follow the inverse square law.
All measurements were obtained with a UVP UVX Radiometer for optimum accuracy. There are several other factors that can determine the intensity of a UVP Pen-Ray Lamp besides the current feed. Reflectors and proprietary factors inside of the lamp can contribute to modifications of output intensities.