Kippzonen BSRN Scientific Solar Monitoring System Uživatelský manuál stáhnout pdf (Strana 119)

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A specially coated silicon dome transmits incoming radiation with wavelength of more than 3 micron, by

cutting off shorter wavelengths. The output of the thermopile sensor is added automatically to the output

of a built-in temperature compensation circuit that incorporates a thermistor to produce the correct electrical

signal corresponding to the incident infrared radiation.

Specifications

Spectral Range 3 to 50 :m

Accuracy ± 5 %

Power supply 3 Volt lithium battery

Battery life: 300 days

Temperature Measurement Thermistor or PT-100

B 4.3 Kipp and Zonen Delft CG4 Pyrgeometer

The CG4 has been designed for meteorologival measurements of downward atmospheric infrared radiation

with high reliability and accuracy. The instrument uses a specially designed silicon window, that although

not hemispherical, provides a 180° field of view with good cosine response. A diamond-like surface protects

the outer surface of the window, while the inner surface filters all solar radiation. The design of the instrument

is such that solar radiation absorbed by the window is conducted away to reduce the solar heating effect.

This reduces the need for dome heating correction terms and shading from the sun.

Specifications

Spectral Range 4.5 to 42 :m

Sensitivity 10 :V W m (nominal)

-1 2

Impedence 40 - 200 S (nominal)

Response Time 25 s (95%)

< 8 s (63%)

Non-linearity <± 1% (-250 to + 250 W m )

-2

Temperature Dependence Max. ± 1% (-20 to + 50 °C)

Tilt Error Max. 1% when facing downwards

Operating Temperature -40 to +80 °C

Field of View 180°

Non-stability <± 1% sensitivity change per year

Temperature Measurement Thermistor YSI 44031 or

Pt-100 Heraeus M-GX 1013

Receiver Paint carbon black

Window silicon with solar blind filter and diamond-like coating

Weight 1050 g

Dimensions W x H 150 x 76 mm

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Kippzonen BSRN Scientific Solar Monitoring System Uživatelský manuál Strana 119