Campbell Sci – LI200R-L

The LI200R, manufactured by LI-COR, is a silicon pyranometer that accurately monitors sun plus sky radiation for solar, agricultural, meteorological, and hydrological applications. It uses a silicon photovoltaic detector mounted in a cosine-corrected head to measure solar radiation. A shunt resistor in the sensor’s cable converts the signal from microamps to millivolts, allowing this sensor to be measured directly by a Campbell Scientific data logger.




Spectral Range 400 to 1100 nm
Calibration ±5% traceable to the U.S. National Institute of Standards Technology (NIST)
Sensitivity 0.13 kW m-2 mV-1 (typically)
Linearity Maximum deviation of 1% up to 3000 W m-2
Absolute Error in Natural Daylight
  • ±5% (maximum)
  • ±3% (typical)
Shunt Resistor 100 Ω, 1%, 50 ppm
Stability < ±2% change over a 1-year period
Response Time < 1 μs
Temperature Dependence ±0.15% per °C maximum
Cosine Correction Cosine corrected up to 82° angle of incidence
Operating Temperature Range -40° to +65°C
Relative Humidity Range 0 to 100%
Detector Description High-stability silicon photovoltaic (blue enhanced)
Sensor Housing Description Weatherproof anodized aluminum case with acrylic diffuser and stainless-steel hardware; O-ring seal on the removable base and cable assembly
Diameter 2.36 cm (0.93 in.)
Height 3.63 cm (1.43 in.)
Weight 84 g (2.96 oz)

Additional information


Campbell Sci