LI-COR Pyranometers

LI-200 Pyranometers with 2003S Mounting & Leveling Fixtures

A pyranometer is an instrument for measuring solar radiation received from a whole hemisphere. It is suitable for measuring global sun plus sky radiation. Solar radiation varies significantly among regions. Season and time of day are major considerations, but surrounding terrain elevation, man-made obstructions, and surrounding trees can also cause large variations in locations with a small area. Often, the required measurement is energy flux density of both direct beam and diffuse sky radiation passing through a horizontal plane of known unit area (i.e., global sun plus sky radiation).

The LI-COR pyranometer may be handheld or mounted at any required angle, provided that reflected radiation is not a significant portion of the total. In its most frequent application, the pyranometer sensor is set on a level surface free from any obstruction to either direct or diffuse radiation. The sensor may be most conveniently leveled using the 2003S Mounting and Leveling Fixture.

The LI-200 Pyranometer Sensor measures global solar radiation (sun plus sky). Click here (23K) for a spectral response graph. The LI-200 is used extensively in meteorological studies, passive solar system analysis, irrigation scheduling, hydrologic studies and many other environmental studies. For clear unobstructed daylight conditions, the LI-200 compares favorably with first class thermopile pyranometers, but is priced at a fraction of the cost.

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