Kippzonen BSRN Scientific Solar Monitoring System Instrukcja Użytkownika Pobierz pdf (Strona 104)

Zero off-set

a)response to 200 W m net + 7 W m

-2 -2

thermal radiation (ventilated)

b)response to 5 K h change ± 2 W m

-1 -2

in ambient temperature

Non-stability ± 0.5 %

percentage change

responsivity per year

Non-linearity ± 0.6 %

percentage deviation from the

responsivity at 500 W m due

-2

to the change in irradiance

within 100 W m to 1000 W m

-2 -2

Directional response for beam

radiation ± 10 W m

-2

(The range of errors caused by

assuming that the normal incidence

responsivity is valid for all directions

when measuring from any direction a

beam radiation whose normal

incidence irradiation is 1000 W m )

-2

Spectral selectivity ± 2 %

percentage deviation of the product

of spectral absorptance and

spectral transmittance from the

corresponding m ean within

0.35 :m and 1.5 :m

Temperature response ±1%

percentage deviation due to

change in ambient temperature

from -10 to +40 °C relative to 20 °C

Tilt response ±0.25%

percentage deviation from the

responsivity at 0° tilt (horizontal)

due to change in tilt from 0° to 90°

at 1000 W m irradiance

-2

Viewing angle 2 B sr

Irradiance 0 - 1400 W m (max.4000 W m )

-2 -2

Spectral range 305-2800 nm (50% points)

335-2200 nm (95% points)

Sensitivity between 4 and 6 :V/(W m )

-2

Impedance 700-1500 Ohm

Receiver paint Carbon black

Glass domes Schott K5 optical glass 2 mm thick,

30 mm and 50 mm outer diameter

Desiccant Silicagel

Spirit level Sensitivity 0.1 degree

1 2 ... 99 100 101 102 103 104 105 106 107 108 109 ... 187 188

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Kippzonen BSRN Scientific Solar Monitoring System Instrukcja Użytkownika Strona 104

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