Solar Spectral Analysis Systems
• Measure Solar spectral irradiance in W/m^2, moles per second, PAR, PPFD, YPF with spectral resolution as good as 1nm.
• Solar Measurement Systems include a miniature spectrometer, a fiber optic cable (or direct attachment), a light collecting accessory/integrating sphere, and a NIST traceable intensity calibration
• Real-time built in applications for UV exposure monitoring & Spectral Matching to compare your simulator to the Sun
• Spectrometer configurations available to cover the 200-1700nm range
Instruments for Solar Monitoring
The SolarRad (300-1100nm) and SolarRad-DSR (300-1700nm) spectrometer configurations are the perfect tools for making solar irradiance measurements of all kinds. They are popular tools for measuring solar simulators and artificial lighting for various solar energy, biological, and horticultural applications. The instruments are NIST calibrated to measure the spectral irradiance in units of watts per meter squared over the wavelength range in nanometers. The systems combine a BLACK-Comet concave grating spectrometer with a RED-Wave NIR instrument to capture a complete UV-VIS-NIR irradiance spectrum all in real time! We have already chosen all the proper accessories, slit sizes, and calibrations that you may need and have packaged them into one system. You can also choose from a list of additional accessories and features to add to your system.
StellarNet SpectroRadiometers? – UV-VIS-NIR Ranges 200-2300nm – Low cost – Ruggedized high performance – Shock-proof – Permanently aligned – SpectraWiz Software included Free – Battery packs for field measurements – USB-2 interface to all notebook PCs
Most popular configuration. The SolarRad features everything needed to perform light measurements over the 300-1100nm wavelength range (with deep UV options available). At the heart of the system is the BLACK-Comet-CXR-SR concave grating spectrometer featuring a UV enhanced CCD detector
The SolarRad-DSR is a dual channel spectrometer system configured for wide range solar spectral irradiance measurements from 300-1700nm. This configuration combines a BLACK-Comet or BLUE-Wave spectrometer with a DWARF-Star NIR instrument to capture a complete UV-VIS-NIR irradiance spectrum all in real time!
Add UV Monitoring Capabilities
The SolarRad typically comes configured for irradiance measurements >300nm using NIST traceable Tungsten Halogen Lamps. Add further UV capability to your system with an IRRADCAL-UV UV calibration to your system. This additional calibration uses a NIST traceable deuterium source to provide UV measurements 200-400nm!
Current Customer Publications- click on the links to the right to see some current StellarNet customer applications involving solar measurement…
The factory performs calibrations for the appropriate wavelength range of your spectrometer using NIST traceable calibration lamps (calibration service such as IRRAD-CAL must be ordered with spectrometer and proper measurement accessories) Fast delivery: most system can be calibrated and shipped within 1 week after receipt of order. Absolute calibration: accuracy within 10% at detector integration setting used for calibration. Certificate available: documentation with NIST traceable serial numbers. If the user has an appropriate irradiance calibration source lamp, a field re-calibration can be easily performed using the included SpectraWiz software. Calibrations are available for UV, VIS,NIR ranges and can be configured for spectral irradiance (W/m^2), radiance (W/m^2/sr) and total power in watt flux in Watts.
- Fast delivery: most system can be calibrated and shipped within 1 week after receipt of order
- Absolute calibration: accuracy within 10% at detector integration setting used for calibration
- Certificate available: documentation with NIST traceable serial numbers.
- If the user has an appropriate irradiance calibration source lamp, a field re-calibration can be easily performed using the included SpectraWiz software
The factory performs several x-axis calibrations on all spectrometers and depending on customer application a StellarNet spectrometer may be calibrated also in the y-axis for absolute intensity measurements. A y-axis Irradiance calibration is performed using NIST traceable lamps. There are several available calibrations depending on your spectrometer wavelength range and slit size.
*Note- Spectrometer range can be smaller than calibration range. Also, IRRAD-CAL and IRRADUV-CAL calibrations can only be preformed simultaneously on BLACK-Comet concave grating model spectrometers.
Irradiance Calibration PDF
Solar Measurement Sample Spectra
Solar Match Monitor-
The SpectraWiz® software now includes a new solar match panel that is part of the Light Monitor application, that is used to characterize and classify light emissions for solar simulators. The Solar Match Monitor application calculates spectral irradiance for each 100nm bin from 400-1100nm and compares the results to the ideal percent for each bin range per IEC/JIS/ASTM. The proximity of the measured data to the ideal values results in classification of the solar simulator lamp from A through D. The Light Monitor also measures UVabc regions below 400nm using both U.S. and European standards.
Episodic Data capture of Sunset– Solar spectra was recorded periodically during sunset. The instrumentation used above is the standard BLACK-Comet model spectrometer, a F600 fiber optic cable, and a cosine receptor. Additionally, the spectrometer was spectroradiometrically calibrated for low light conditions using a NIST traceable lamp and receptor aperture. The episodic data capture shows clearly when the Sun has dropped over the horizon and the spectral signature of distant streetlights becomes the most significant feature of the spectrum. StellarNet solar monitors may also be used to test solar simulators and other artificial lights frequently used in the solar cell testing, production, and quality control.
Solar Match Monitor– BLACK-Comet-CXR-SR 50um slit, F600VIS-NIR fiber, CR2 Cosine receptor, CR2-AP, CR2-TP and other optional accessories available to measure the sun or your solar simulator.
Research in David Sedlak’s group at the University of California Berkeley includes the design of constructed wetlands for water and wastewater treatment. These constructed wetlands rely on maximizing sunlight exposure to remove organic contaminants through photochemical reactions. Reaction rates and mechanisms of contaminant removal are studied using simulated sunlight in the laboratory, and are then modeled under field conditions. In order to translate laboratory findings and predict contaminant removal in constructed wetland treatment systems, the research team relies on accurate and high resolution characterization of the solar spectra both in the lab and in the field.
SolarRad-DSR capturing solar spectrum from 300-1700nm. Sunny day Tampa, Florida 🙂
– Rachel Scholes, Environmental Engineering PhD Student at UC Berkeley
- Solar Measurement System Options
- Free SpectraWiz Software
- Integrating Spheres & Light Receptors
- Extended Ranges
Free SpectraWiz Software
The powerful SpectraWiz® spectrometer software is provided free of charge with every spectrometer instrument. This includes drivers and customizable software for Windows. The SpectraWiz software is considered the “Swiss Army Knife of Spectroscopy” and may be used to accurately measure wavelength emissions, reflectance, transmission, absorption, concentrations, and absolute intensities. In addition to real-time spectroscopy, SpectraWiz® has built-in applications for SpectroRadiometry, SpectroColorimetry, ChemWiz chemistry lab concentration analyzer, and UV level monitors. Download SpectraWiz Software FREE
SpectraWiz Solar Monitoring Tools
- Solar Match Monitor- The solar match application panel can be used to characterize and classify solar simulators. The Solar Match Monitor application panel calculates spectral irradiance from 400-500nm, 500-600nm, 600-700nm, 700-800nm, 800-900nm, 900-1000n
m, 1000-1100nm and compares the results to the ideal percent for each range per IEC/JIS/ASTM. The proximity of the measured data to the ideal values results in classification of the solar simulator lamp from A through C. Save Sample is used to save each sample to the data log. In the Data Log, percentage is provided for each wavelength range. Total Power and Solar Class is provided for each sample.
- UV Monitor- calculates UVa, UVb, and UVc in Watts per square meter including UVa/b ratio, UVb and VIS-IR power, and time
in minutes to the skin (Te) erythema action as prescribed by algorithms found
- Photosynthetically Active Radiation (PAR) calculations as well as YPF & PPFE in real time with each spectral acquisition!
Total Power, Absolute Intensity, & Colorimetry
- Absolute intensity measurements Watts/m2
- µm watts/cm2
- Lumens/m2 — LUX
- Moles per second — PAR
- Footcandles /m2
- Radiant Flux (watts) / Luminous Flux (lumens)
- xy Chromaticity, dominant wavelength, purity
- Correlated Color temperature (CCT)
- Set Power Spectral Density (PSD) range
For more information about the FREE SpectraWiz Software Suite and all our other customizable full source codes and programs click on the picture links below!
StellarNet Integrating Spheres allow collection of light with an 180 field of view. The IC2 is a 2″ internal diameter sphere with 2 SMA connectors for illumination and collection of Solar light. Mounting tripods and other accessories are available to facilitate Solar measurement.
IS6 is a 6” diameter integrating sphere with a 2.0” input port, internal reflective coating, baffle system, and SMA fiber optic output. StellarNet 6″ integrating spheres are now available with several port accessories such as calibration lamps, caps, SMA-couplers, and reducers.
IC2 is a 2” cube with internal integrating sphere. It has 5/8” input port and SMA fiber optic output. Another SMA input can be used for reflectance illumination. Select the IC2-TP miniature tripod for mounting the IC2 for alignment and repeatable measurement.
StellarNet Light Receptors-
CR2 is a ¼” diameter UV-VIS-NIR cosine receptor using a polymer diffuser for 200-1700nm & 180° FOV.
CR2-RA is a 90° right-angle Cosine Receptor cube.
CR2-AP is a 10% aperture for the CR2 that extends the system dynamic range by an order of magnitude, thus enabling spectral measurements of sources that are 10 times brighter. Great for concentrated solar simulators, bright lamps, and veryy sunny days!
CR-LENS is a cosine receptor lens assembly that reduces the field of view from 180 degrees to a small spot. Adjustable focus allows variable distance from target surface such as OLED displays.
Dual DSR Spectroradiometer- StellarNet Dual DSR system pictured above uses a Y bifurcated fiber (F600-Y-UVSRNIR) to connect a BLACK-Comet-SR spectrometer and a RED-Wave NIR Spectrometer. The entire system can be radiometrically calibrated over the range 200-1700nm. Above system pictured with Flash Capture Interface (FCI) that allows spectrometer to capture emission from flashing sources such as flashtubes and pulsed solar simulators.
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