The GUVis-3511 radiometer is the latest version of BSI's GUV series of ground-based instruments. The GUVis-3511 is available with between 8 and 19 channels, which can be selected from 30 wavelengths, ranging from 305 to 1,640 nm. The radiometer can also measure Photosynthetically Available Radiation (PAR: 400-700 nm).
The electronics of the instrument are based on BSI’s microradiometer technology, which features unprecedented performance with respect to dynamic range, linearity, speed, and expandability. The instrument also features a new irradiance collector covering the spectral range from the UV to the SWIR.
The instrument can be equipped with a shadow band accessory, the BioSHADE, which allows alternating measurements of global (sun + sky) and diffuse solar irradiance. These measurements allow the calculation of direct solar irradiance.
GUV radiometers were introduced in 1992 and are being used to monitor geographic variations of incident irradiance in national and international networks. Similar to its predecessors, the GUVis-3511 is suitable for use in long-term research programs. Depending on configuration, the GUVis-3511 allows the retrieval of aerosol optical depth, cloud optical thickness, total column ozone, and water vapor column — four crucial variables used in characterizing the solar spectrum.
Features
Measures surface UV, visible, and infrared irradiance in up to 19 user-selectable wavebands and PAR
Based on state-of-the-art microradiometer technology
Features newly-designed irradiance collector with small cosine error from the UV to the IR
Uses specialized, hard-coat, multicavity interference filters with excellent long-term stability
Rugged, powder-coated aluminum housing
Environmentally sealed and temperature-stabilized to 40 or 50 °C for long-term operation in harsh environments
RS-232 serial or USB output for connection to a PC
Windows®-based µLogger data acquisition software included
Instrument inclination sensors (pitch and roll) included
Hard-shell travel case included
Optional BioSHADE shadowband accessory suitable for land and ship-based deployments
Optional BioGPS Global Positioning System
Optional spectral and directional characterization of the radiometer
