Apogee SQ-100X-SS Manuale d'uso - Pagina 8

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Cosine Response
Directional, or cosine, response is defined as
the measurement error at a specific angle of
radiation incidence. Error for Apogee SQ-
100X series quantum sensors is
approximately ± 2 % and ± 5 % at solar zenith
angles of 45° and 75°, respectively.
Mean cosine response of five SQ-
100X series quantum sensors.
Cosine response measurements
were made by direct side-by-side
comparison to the mean of seven
reference SQ-500 quantum
sensors.