LPPYRA13
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V2.3
9
MAINTENANCE
In order to grant measurements high accuracy, it is important to keep the outer glass
dome clean. Consequently, the more the dome will be kept clean, the more measure-
ments will be accurate.
You can wash it using water and standard papers for lens. If necessary, use pure
ETHYL alcohol. After using alcohol, clean again the dome with water only.
Because of the high temperature changes between day and night, some condensation
might appear on the pyranometer domes. In this case the performed reading is highly
over-estimated. To minimize the condensation, the pyranometer is provided with a
cartridge containing dessicant material (silica-gel). The efficiency of the silica-gel crys-
tals decreases over time while absorbing humidity. Silica-gel crystals are efficient
when their color is yellow, while they turn white/translucent as soon as they loose
their efficiency. Read instructions at chapter 3 about how to replace the silica-gel
crystals. Silica-gel typical lifetime goes from 2 to 6 months depending on the envi-
ronment where the pyranometer works.
To exploit all the pyranometer features, it is highly recommended that the calibration
be checked annually.
Summary of Contents for Delta OHM LPPYRA13
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