Atlas Material Testing Technology: The LS-200 full-spectrum monitoring device has been specifically designed for use in Ci Series Weather-Ometers® to precisely measure the SPD output of the xenon lamp. This device has excellent correlation to the spectro-radiometers used in the Atlas Calibration Laboratory. The device is easily mounted on the specimen rack, and the output is measured over a short amount of time (30 minutes is sufficient). The data can be downloaded and exported into a common spreadsheet program and analyzed to determine compliance to performance-based standards. The LS-200 works with any generation of Weather-Ometer.