Apogee S2-131-SS Gebruikershandleiding - Pagina 7

Blader online of download pdf Gebruikershandleiding voor {categorie_naam} Apogee S2-131-SS. Apogee S2-131-SS 15 pagina's. Red - far-red sensors

Directional (Cosine) Response

Spectral Response

Directional (cosine) response is defined as the

measurement error at a specific angle of

radiation incidence. Error for Apogee S2

series red / far sensors is approximately ± 2 %

and ± 5 % at solar zenith angles of 45° and

75°, respectively.

Mean spectral response measurements

of six replicate red - far-red sensors (red

sensor is centered near 655 nm, far-red

sensor is centered near 730 nm).

Spectral response measurements were

made at 2 nm increments across a

wavelength range of 600 to 800 nm in a

monochromator with an attached

electric light source. Measured spectral

data from each sensor were normalized

by the measured spectral response of

the monochromator/electric light

combination, which was measured with

a spectroradiometer.