LPPYRHE16
- 17 -
V2.3
8
MAINTENANCE
In order to grant measurements high accuracy, it is important to keep the quartz win-
dow clean. Consequently, the more the window 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 window with water only.
Because of the high temperature changes between day and night, some condensation
might appear on the pyrheliometer window. In this case the performed reading is
highly over-estimated. To minimize the condensation, the pyrheliometer 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 pyrheliometer works.
To exploit all the pyrheliometer features, it is highly recommended that the calibration
be checked annually.
9
SAFETY INSTRUCTIONS
General safety instructions
The instrument has been manufactured and tested in accordance with the safety
standard EN61010-1:2010 “Safety requirements for electrical equipment for meas-
urement, control and laboratory use” and has left the factory in perfect safety tech-
nical conditions.
The instrument proper operation and operating safety can be ensured only if all
standard safety measures as well as the specific measures described in this manual
are followed.
The instrument proper operation and operating safety can be ensured only in the cli-
matic conditions specified in this manual.
Do not use the instruments in places where there are:
•
Corrosive or flammable gases.
•
Direct vibrations or shocks to the instrument.
•
High-intensity electromagnetic fields, static electricity.
User obligations
The instrument operator shall follow the directives and regulations below that refer to
the treatment of dangerous materials:
•
EEC directives on workplace safety.
•
National law regulations on workplace safety.
•
Accident prevention regulations.
