Quantum Meters measure instantaneous Photosynthetic Photon Flux (PPF) in
µmol m-2 s-1.
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USE UNDER
DIFFERENT LIGHT SOURCES
This table shows the
sensor’s output under varying light sources. The sensor’s
spectral response, the spectral output of electric lamps,
and these errors are all constant— allowing the user to
calculate the correct output for each light source.
For example, if Model BQM-ELEC is used in sunlight, and a
value of 1,500 µmol m-2 s-1 is given,
the actual light is 1,620 µmol m-2 s-1.
In a controlled environment with multiple lamp types (such
as a mixture of MH and HPS), a more precise percent error
can be determined when the amount (%) of each type of light
present is known.
This graph compares the spectral output of these light
sources
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