LPPYRA11
- 10 -
V1.1
6
MAINTENANCE
In order to grant measurements high accuracy, it is important to keep the outer glass
domes clean. Consequently, the more the domes will be kept clean, the more meas-
urements 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 domes with water only.
Because of the high temperature changes between day and night, some condensation
might appear on the domes of the pyranometers. In this case the performed reading
is highly over-estimated. To minimize the condensation, the albedometer is provided
with a cartridge containing dessicant material (silica-gel). The efficiency of the silica-
gel crystals decreases over time while absorbing humidity. Silica-gel crystals are effi-
cient 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 albedometer works.
To exploit all the albedometer features, it is highly recommended that the calibration
be checked annually.
Summary of Contents for Delta OHM LPPYRA11
Page 14: ...LPPYRA11 14 V1 1 NOTES ...
Page 15: ......