Apogee MQ-200 Руководство пользователя - Страница 8

Просмотреть онлайн или скачать pdf Руководство пользователя для Измерительные приборы Apogee MQ-200. Apogee MQ-200 18 страниц. Quantum meter

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.