1 Introduction
In addition to environmental applications, and face to development of renewable energy, SL 100 instrument allows to control on test or on site,
equipment with thermal or photovoltaic sensors.
SL100 instrument
is a portable instrument which can measure and display:
Instantaneous:
Irradiance or irradiation for spot check measures in W/m².
On a timed duration of measurement:
•
Max./min. values
•
Average value of irradiance
•
A
ccumulated energy or radiant exposure in Wh/m²
Data are saved when the instrument is stopped or in case of battery failure.
Its sensor is composed of a strained silicon cell, not very sensitive to the thermal changes. It absorbs the solar radiation through a diffusor and a
correction filter. The output voltage of the sensor is related to the received radiation.
SL 100 instrument is mainly an efficient and easy-to-use instrument: with small size, it has a large display with a resolution of 64*128 pixels involving
a very high electronic technology.
2 General information
2.1 Measured units
SL 100 instrument can process the energy intensity emitted by the solar radiation in a precise place of the earth.
Expression of the solar energy and associated units:
Irradiance
is the solar radiant
flow
received by unit area, expressed in W/m².
The radiant exposure or global irradiation
is the
quantity
of solar energy by unit area:
it's the product of irradiance by the duration of irradiation,
expressed in Wh/m²
2.2 Use
Solar radiation :
Among all solar radiations, (opposite draw)
SL 100 was designed to measure the sum of direct solar radiation and diffuse solar radiation, which
constitutes global solar radiation.
For any application, before, during and after the installation of solar thermal photovoltaic sensors, it's
required to control means of measurement to obtain valid and coherent results. Means of use of the
instrument has at least so much importance on the result than the quality of the instrument.
It is definitely necessary to take into account the influence of environment, in particular:
1
. Position or direct correctly solar cell of SL 100 instrument, according to location of solar sensors or
supports (roof, terrace...)
2.
Avoid dark areas (present or to come)
3
. Go away as much as possible from reflecting zones
4
Содержание SL 100
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