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Home » About » Instrumentation » Solar and Net Radiation

Solar and Net Radiation

CS320 Digital Thermophile Pyranometer

The Campbell Scientific CS320 digital thermopile pyranometer measures short-wave radiation (sunlight).  The thermopile pyranometer’s black surface uniformly absorbs solar radiation across the solar spectrum, outperforming many silicone-cell pyranometers. The dome shape allows for dew and rain runoff.

CS320

Quick Facts/Specifications

  • Measurement Range: 0 to 2000 W/m2
  • Spectral Range: 385 to 2105 nm
  • Calibration Uncertainty: ± 2.6%
  • Error due to Clouds: ±2 %

NR-LITE2 Net Radiometer

The NR-LITE2 is a net radiometer manufactured by Kipp and Zonen. It measures incoming and outgoing short-wave and long-wave radiation using two black conical absorbers, one facing upward and the other downward.  A single output means that separate short-wave and long-wave radiation, and their upward and downward components, cannot be individually obtained.

Photo of NR-LITE2 from Campbell Scientific.

Quick Facts/Specifications

  • Measurement Range: ± 2000 W/m2
  • Spectral Range: 0.2 to 100 µm
  • Uncertainty: <5%

SN500SS Net Radiometer

The Apogee SN500SS net radiometer measures four-component net radiation.  It has two pyranometers to measure upward and downward solar radiation, and two pyrgeometers to detect upward and downward long-wave radiation.

Photo of the SN500SS from Apogee Instruments

Quick Facts/Specifications

Pyranometers

  • Spectral Range (upward looking): 385 to 2105 nm
  • Spectral Range (downward looking): 295 to 2685 nm
  • Uncertainty: Less than 5%

Pyrgeometers

  • Spectral Range: 5000 to 30,000 nm
  • Uncertainty: 5%

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