Apogee SQ-205X-SS Manual del usuario - Página 8

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Apogee SQ-205X-SS Manual del usuario
Cosine Response
Directional (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.