CMP6, CMP10, CMP11, and CMP21 Pyranometers
5
The pyranometers consist of a thermopile sensor, housing, two glass domes,
and cable. The thermopile is coated with a black absorbent coating. The paint
absorbs the radiation and converts it to heat. The resultant temperature
difference is converted to a voltage by the copper-constantan thermopile. The
thermopile is encapsulated in the housing in such a way that it has a field of
view of 180 degrees and the angular characteristics needed to fulfill the cosine
response requirements.
The pyranometers are compatible with the optional CVF4 Heater/Ventilator
Unit, which can keep their dome free from ice and dew (see Appendix
(p. C-1)
). In some applications, the CVF4 may also reduce
the deposition of dust on the dome, and therefore reduce the cleaning interval
frequency.
6. Specifications
Features:
•
Double glass dome
•
Integrated bubble level is visible without removing sun shield
•
Measures reflected solar radiation when inverted
•
Desiccant-filled drying cartridge prevents dew from forming on the
inner sides of the domes
•
Provides measurements in direct sunlight, under plant canopies, when
the sky is cloudy, and in artificial light
•
Compatible with Campbell Scientific CRBasic data loggers: CR300
series, CR6 series, CR800 series, CR1000, CR1000X, CR3000,
CR5000, and CR9000(X)
6.1 Pyranometers
Dimensions are shown in FIGURE
and the other specifications are
provided in TABLE
FIGURE 6-1. Dimensions
