Apogee SE-421 Руководство пользователя - Страница 7

Просмотреть онлайн или скачать pdf Руководство пользователя для Аксессуары Apogee SE-421. Apogee SE-421 19 страниц. Ultraviolet-a sensor

Cosine Response

Cosine Response Graph

Directional, or cosine, response is

defined as the measurement error at

a specific angle of radiation incidence.

Directional error for Apogee SU-200

series UV-A sensors is approximately ±

2 % and ± 5 % at solar zenith angles of

45° and 75°, respectively.

Mean cosine response of four

Apogee UV-A sensors. Cosine

response was calculated as the

relative difference of UV-A

sensors from the mean of

replicate reference UV-A

sensors deployed outdoors.

These data are the average of

the AM and PM response.