The LI-200 is patterned after the work of Kerr, Thurtell, and Tanner. It features a silicon photovoltaic detector installed in a miniature probe that is fully cosine corrected. The current output directly proportional to solar radiation is calibrated under natural daylight conditions according to the Eppley Precision Spectroradiometer (PSP) in watts per square meter (W m-2). Under most natural light conditions, the error is less than 5%.
Specification
Sensitivity: Typically 90 µA per 1000 W m-2 Detector(s): High Stability Silicon Photovoltaic Response Time: 10 usec Linearity: Max. Dev. 1% up to 3000 W m-2