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4
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Figure N.3 shows the operations necessary to fill the cartridge with the silica
gel crystals.
Fig.
3
•
The LP UVA 02 radiometer has to be mounted in a readily accessible location
to clean the dome regularly and to carry out maintenance. At the same time, check that
no building, construction, tree or obstruction exceeds the horizontal plane where the
radiometer lays. If this is not possible, select a site where obstructions do not exceed 5
degrees of elevation, in the path followed by the sun, between earliest sunrise and
latest sunset.
N.B The presence of obstructions on the horizon line significantly
affects the measurement of direct irradiance.
•
The radiometer has to be located far from any kind of obstruction, which might
reflect sunlight (or sun shadow) onto the radiometer itself.
•
The LP UVA 02 radiometer is provided with a spirit level for carrying out an
accurate horizontal leveling. The adjustment is made by means of two leveling screws
that allow to adjust the radiometer inclination. Use the two 6mm-diameter holes and a
65mm interaxial distance to mount the instrument on a plane. Remove the shade disk
to access the holes and reposition it after mounting (see fig. 4).
•
The LP S1 mounting kit (figure 5), supplied on demand as an accessory, allows
an easy mounting of the radiometer on a mast. The mast maximum diameter shall not
exceed 50 mm. The operator shall take care that the mast height does not exceed the
radiometer plane to avoid measurement errors caused by any reflection or shadow of
the mast itself. To fix the radiometer to the mounting bracket, remove the shade disk
loosening the three screws, fix the radiometer, and mount the white shade disk again.
•
It is suggested to thermally isolate the radiometer from its mounting brackets,
and to check that the electrical contact with the ground be done properly
A
B
C
D
Silica-gel cartridge
Perforated Cap
Sealed sachet of silica
Filling
Closing the cartidge
LP G
LP SG
