UV Radiometry

The state-of-the-art Rotating Shadowband Spectroradiometer (RSS) combines a high-performance 1024-pixel CCD spectrograph with an external rotating shadowband similar to that used in our MFR instrument family. It automatically provides instantaneous direct, diffuse, and total irradiance measurements across the majority of the solar spectral range. System optics are thermally stabilized and environmentally sealed to provide excellent long term calibration stability. Instead of using a mechanically scanned diffraction grating, the RSS makes measurements simultaneously across all 1024 channels, and meets the Baseline Solar Radiation Network's requirements for atmospheric turbidity measurements. The shadowband enables the instrument to measure all three components of solar irradiance with one detector. The Model RSS-1024 covers the 360-1100nm visible/NIR range and the Model UVRSS-1024 covers the 292-370nm UV-B and UV-A range. Both systems feature web access to live or stored calibrated spectral irradiance and optical depth data, and use YESDAQ distributed database technology to support networks of remote systems around the globe.
Datasheet: PDF

The Ultraviolet Multifilter Rotating Shadowband Radiometer (UVMFR) measures total, diffuse, and direct irradiance at seven narrowband wavelengths in the UV-B and UV-A regions. The shadowband enables the instrument to measure all three components of solar irradiance with one detector.The UVMFR-7 system includes the YESDAS-2 datalogger and data analysis software. The MFR-7, a shadowband instrument for the visible/NIR, is also available.
Datasheet: PDF

The UVB-1 and UVA-1 Pyranometers measure total irradiance from 280 to 320 nm and 320 to 400 nm, respectively. The instruments produce a high level 0-4 VDC output signal and are thermally stabilized for long term reference-grade measurements. The UVB-1 is field proven in networks throughout the world. Solar dose modeling software, UV-Calc, is included with the instrument. The UVPS power supply (shown) or the YESDAS-2 datalogger are available as accessories.
Datasheet: PDF

The UV/Visible/NIR Atmospheric Radiation Monitoring System (ARMS) consists of the YES MFR-7, UVMFR-7, and UVB-1 pyranometer. This system forms the backbone of the USDA's "UVB Radiation Monitoring Program" run by scientists at Colorado State University (CSU) in Fort Collins, CO. Together these instruments measure direct, diffuse and total spectral irradiance from 300 to 940 nm, as well as broadband UVB and visible irradiance. The network has been providing UV data from nearly 40 sites around North America to the research community for the past seven years. In addition to publishing the data on the web, the group of scientists at CSU who run the network have developed algorithms to extract certain data such as ozone retrievals and have published numerous papers.

The ARMS can optionally be configured with auxiliary sensors such as the TSP-700 pyranometer and/or the TIR-550 IR radiometer to extend global measurements to the Near-IR and IR.

The Multifilter Rotating Shadowband Radiometer (MFR-7) measures total, diffuse, and direct irradiance at six wavelengths (415, 500, 615, 673, 870, and 940 nm, each 10 nm FWHM) in the visible/NIR, and includes one unfiltered broad-band silicon pyranometer. Thermally stabilized, environmentally sealed state-of-the-art interference filters provide excellent long term calibration stability. Instead of using a rotating filter wheels the MFR-7 makes measurements simultaneously across all seven channels, meeting the Baseline Solar Radiation Network's requirements for atmospheric turbidity measurements. The shadowband enables the instrument to measure all three components of solar irradiance with one detector. The MFR-7 system includes the YESDAS-2 datalogger and works with YESDAS Manager data analysis software. The UVMFR, a shadowband instrument for the UV region, is also available
Datasheet: PDF

The SDR-1 Single Detector Rotating Shadowband Radiometer is identical to our standard Multifilter Rotating Shadowband Radiometer (MFR-7) except that it has a single cosine-corrected broadband silicon channel that provides fully automatic measurements of global, diffuse, and direct normal components of solar radiation. It is very similar to bolometric/thermopile type radiometers except the spectral response of silicon does not extend as far into the mid infrared. Historically, a total solar pyranometer has been integrated with a solar tracker-mounted normal incidence pyrheliometer and a third shaded pyranometer to make these measurements, as is done in the Baseline Solar Radiation Network. However, the SDR-1 offers a simpler and less expensive alternative than these separate instruments. Because it uses only one detector to make all three measurements, there is only one calibration necessary. In addition, because it uses only one mechanical axis of rotation it tends to stay in alignment with the sun much better than a two axis tracker, reducing labor required to operate the system.
Datasheet: PDF

The Model TSP-400 Total Solar Pyranometer is a precision meteorological instrument that measures global (direct and diffuse) total solar radiation. Like the other members of the YES Total Solar Pyranometer family, it is ruggedly designed for long-term field use. The Model TSP-400V adds a ventilation system for increased accuracy under all ambient temperature conditions. When properly characterized, the Model TSP-400V meets or exceeds the requirements for a World Meteorological Organization high class pyranometer (formerly called a secondary standard).
Datasheet: PDF

The state-of-the-art TSP-700 Total Solar Pyranometer uses platinum resistance thermometers to make high accuracy broadband irradiance measurements and replace older thermopile measurement technology. The instrument offers an excellent cosine response and a high level output signal that is totally independent of ambient temperature changes. When properly characterized, the ventilated TSP-700 meets the requirements for a World Meteorological Organization high class pyranometer (formerly called a secondary standard). YES Models TSP-400 and TSP-100 offer lower cost alternatives for applications that do not require the precision of the TSP-700.
Datasheet: PDF

The Model TIR-570 Total Infrared Radiometer represents the state-of-the-art for making precise field measurements of downwelling broadband atmospheric infrared irradiance. The TIR-570 uses a advanced chopped pyroelectric detector and precision interference filter integrated with a self-contained black body source to measure spectral irradiance from 4 to 30 μm. Global climate change researchers now have a tool for routine high accuracy atmospheric IR measurements.
Datasheet: PDF