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2
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LP UVA 02
1 Introduction
The LP UVA 02 radiometer measures the broadband UVA irradiance on a plane
surface (Watt/ m
2
). Measured irradiance is the result of the sum of direct solar
irradiance and of diffuse irradiance.
The radiometer can measure the UVA irradiance in closed room too.
The radiometer is produced in three versions:
LP UVA 02
PASSIVE*
LP UVA 02 AC
ACTIVE , 4..20mA CURRENT output
LP UVA 02 AV
ACTIVE , 0..1 or 0..5 or 0..10 V VOLTAGE output,
to be defined at the order.
* Using SICRAM Module VP 472 it is possible to connect passive pyranometer to
Indicator D09847.
2 Working Principle
LP UVA 02 radiometer is based on a solid state sensor, the spectral match with the
desire curve is obtain using special filter. The relative spectral response is reported on
figure 1.
Fig1
In order to protect the diffuser from the dust, LP UVA 02 is equipped with a 50mm
glass dome.
The cosine low response is obtained with a particular shaped PTFE diffuser in
figure 2 the cosine error versus angle of incident is reported
1.00E-03
1.00E-02
1.00E-01
1.00E+00
290
310
330
350
370
390
410
Lambda (nm)
R
e
la
ti
ve Spect
ral
r
esponse
