A vector of indexes for extracting subsets of spectra from the
sensors.mspct object.
Details
In the LI-190SA and LI-190 PAR quantum sensor (PAR = photosynthetically active radiation) colored glass filters are used to tailor the silicon photodiode response to the desired quantum response. They have the same spectral response.
The type of filter used in the LI-190R PAR quantum sensor is not described, but improves the spectral response compared to the LI-190.
The LI-200SA features a silicon photovoltaic detector. This is not a true 'pyranometer' and should be used only in sunlight, and calibrated in sunlight.
The LI-210SA Photometric Sensor utilizes a filtered silicon photodiode to provide a spectral response that matches the CIE curve within ± 5 light sources.
The LI-210R Photometric Sensor utilizes a filtered silicon photodiode to provide a spectral response that matches the CIE curve.
Manufacturer: LI-COR Inc., Lincoln, Nebraska https://www.licor.com/env/
Note
Digitized with 'DigitizeIt' or 'engauge' from manufacturers publications. This are approximate data, both because of the digitizing process, and because they are either typical values or for a specific sensor unit. Individual sensor units are expected to differ to some degree in spectral response. In the case of multichannel sensors, the spectra for all channels are plotted in the same figure in the data sheets and in out-of-band regions the lines overlap making accurate extraction of values difficult. Variation from unit to unit affects both response and center/peak wavelengths.
References
LI-COR (2005) Instruction Manual 'LI-COR Terrestrial Radiation Sensors'. LI-COR (2015) Technical Note 'Why Upgrade to the "R" Light and Radiation Sensors?'