Irradiance Package Comparison
The series of solar spectrum graphs demonstrate absolute irradiance measurement capabilities of the USB2000+-RAD Spectroradiometer. The system did not require in-field NIST-traceable UV/VIS/calibration since the spectrometer and attached CC3-DA cosine corrector is pre-calibrated by Ocean Optics and is ready for measurement “out of the box”
Installation and measurement is fast, accurate and convenient.

“Out of the box” install and measurement procedure:

• Open the package, remove contents
• Install SpectraSuite software into PC or laptop
• Attach USB cable from Spectrometer to PC/laptop
• Follow Windows install wizard for the USB2000+ spectrometer
• Open SpectraSuite, “File”, “New”,
• Select “New Absolute Irradiance Measurement”
• Select “Get Irradiance Calibration from file”
• Set integration time, measure “Dark”
• Measure irradiance

Measured absolute irradiance of the solar spectrum, Dunedin Florida,
at Noon, 4:30 and 6:00 pm on August 8, 2008

 

Solar Spectrum - Noon - Dunedin, FL

Solar Spectrum - 4.00p - Dunedin, FL

Solar Spectrum - 6.00p - Dunedin, FL