Model PS-100
$3,995.00
Model PS-200
$4,495.00
Model PS-300
$5,495.00
- View Specs
- Order PS-100
Model PS-100
$3995.00
- Order PS-200
Model PS-200
$4495.00
- Order PS-300
Model PS-300
$5495.00
We currently have a 1 – 2 week lead time on all orders, but please feel free to call ahead for product availability.
Our spectroradiometers measure radiation with 1/2 nanometer bandwidth resolution.
A Procedure to Improve Accuracy of the Measurement of UV-B Radiation.
Sunlight and typical electric lamps have several orders of magnitude more visible than UV-B radiation (280-320 nm). This makes measuring UV-B radiation challenging because trace amounts of visible radiation can be internally reflected to the UV-B detectors. This contamination of the UV detectors by visible radiation is called stray light. The spectroradiometer has baffles to minimize internal reflection but it still has about 0.1 percent stray light, which can significantly affect measurement of UV-B radiation in sunlight. In applications without significant visible radiation, such as germicidal lamps or black lights, the stray light is not a factor. UV-A (320-400 nm) radiation is a relatively large fraction of sunlight (8.5 percent) so UV-A measurements are minimally affected by stray light. However, UV-B radiation is only about 0.3 percent of the visible radiation on a clear day near noon. UV-B measurements in sunlight, therefore, are affected up to 33 percent by stray light, so the following procedure should be used to improve the accuracy of UV-B measurements in sunlight or electric lamps.
