Solar concentrator LT

for aging tests

The Low-Temperature EMMA/EMMAQUA (LT-EMMA/EMMAQUA) is Atlas latest innovation that utilizes cool mirror technology in natural exposure testing. This new outdoor testing device delivers more than five years of equivalent radiation exposure as would be received in a standard outdoor testing rack in South Florida in a single year, but with much cooler sample temperatures when compared to traditional EMMA/EMMAQUA testing. In the 1960s Atlas DSET Laboratories pioneered accelerated outdoor weathering with its Fresnel-reflecting solar concentration devices - EMMA® (Equatorial Mount with Mirrors for Acceleration) and EMMAQUA® (Equatorial Mount with Mirrors for Acceleration with Water). In 2014, Atlas introduced its latest advancement in exposure testing, the Low-Temperature EMMA and Low-Temperature EMMAQUA (LT-EMMA/ EMMAQUA). The device achieves cooler sample temperatures through a patented cool mirror technology that has very high reflectance in the UV and near visible wavelength ranges while attenuating reflectance in the longer wavelength visible and IR portions of the solar spectrum. The new LT-EMMA/EMMAQUA device performs accelerated testing while: • Providing higher acceleration at significantly lower temperatures • Allowing testing of temperature-sensitive materials that may not be suitable for standard EMMA/EMMAQUA • Being fully compliant to ASTM G90 requirements