The Radiometer UVA Sensor provides fast and accurate irradiance measurement in the UVA region. Its spectral response covers the 320 to 400nm range.  The Teflon diffuser assures an angular response close to a cosine function (Lambertian response) making it suitable for measuring diffused radiation or radiation from extended sources.

The UVA Sensor is ideal for measuring mercury, xenon, metal halide or fluorescent lamps, commonly used for studies in the UVA region, as well as sunlight. 

The measured irradiance is displayed in mW/cm2 or W/m2. Consequently, the integrated dose is shown in Joules/cm2 or kJoules/m2. The PMA2110 has a resolution of 0.001 mW/cm2 and a full scale of 200mW/cm2 allowing measurement of very weak and very strong signals with the same detector. The effect of stray light is negligible.

UVA is less biologically effective than UV-B (280-320nm). However, because of its much greater intensity in sunlight and many artificial sources and the greater period of the day in which sunlight UVA remains at high intensities, UVA can have significant biological effect. The UV-A radiation can also penetrate deeply into human living tissue through the skin. Commonly known effects of UV-A include: photosensitization of various chemicals, pigmentation of the skin, induction of polymerization. The UVA can also cause erythema or DNA damage in humans or animals, however large doses of UV-A are needed and the damage mechanisms are different than these of UV-B.

Common sources of UVA Light:

• Low pressure fluorescent lamps
• Cool white fluorescent
• High pressure mercury and metal halide lamps
• High pressure xenon lamps
• Sunlight

Features:

• NIST Certification
• High sensitivity
• Dynamic range 2*105
• Excellent long term stability
• Cosine corrected
• NIST traceable calibration
• Radiometric units
• 320nm to 400nm spectral range
• Meets ICH guidelines for photostability testing
• Needs to be used with radiometer

Applications:

Spec Summary: