Apogee SQ-225 Manuel du propriétaire - Page 8

Parcourez en ligne ou téléchargez le pdf Manuel du propriétaire pour {nom_de_la_catégorie} Apogee SQ-225. Apogee SQ-225 16 pages. Quantum sensor

Cosine Response

Directional, or cosine, response is defined as the

measurement error at a specific angle of radiation

incidence. Error for Apogee SQ series quantum sensors is

approximately ± 2 % and ± 5 % at solar zenith angles of

45° and 75°, respectively.

Mean cosine response of twenty-three SQ

series quantum sensors (error bars

represent two standard deviations above

and below mean). Cosine response

measurements were made by direct side-

by-side comparison to the mean of four

reference thermopile pyranometers, with

solar zenith angle-dependent factors

applied to convert total shortwave

radiation to PPFD. Blue points represent

the AM response and red points represent

the PM response.