LPPYRA12
- 3 -
V2.5
1
INTRODUCTION
LPPYRA12 pyranometer measures the irradiance on a flat surface (W/m
2
). Thanks to
the shadow-ring, LPPYRA12 measures the diffuse solar radiation eliminating the con-
tribution of direct irradiance.
LPPYRA12 is equipped with a Spectrally Flat Class B (First Class) pyranometer (LPPY-
RA02) in accordance with ISO 9060:2018 and with the criteria of the WMO “Guide to
Meteorological Instruments and Methods of Observation”.
The pyranometer is available in the following versions:
•
LPPYRA12
:
PASSIVE.
The passive version can be connected to the instruments
D09847 and HD31 by using VP 472 SICRAM module.
•
LPPYRA12AC
:
ACTIVE with 4..20 mA CURRENT output (0…2000 W/m
2
).
•
LPPYRA12AC4
: ACTIVE with 4..20 mA CURRENT output (0…4000 W/m
2
).
•
LPPYRA12ACS
: ACTIVE with 4..20 mA CURRENT output (0…2000 W/m
2
) and
RS485 Modbus-RTU output.
•
LPPYRA12ACS4
: ACTIVE with 4..20 mA CURRENT output (0…4000 W/m
2
) and
RS485 Modbus-RTU output.
•
LPPYRA12AV
:
ACTIVE with 0..1 or 0..5 or 0..10 V VOLTAGE output (0…2000
W/m
2
) to be defined when ordering.
•
LPPYRA12AV4
: ACTIVE with 0..1 or 0..5 or 0..10 V VOLTAGE output (0…4000
W/m
2
) to be defined when ordering.
•
LPPYRA12S
:
With RS485 Modbus-RTU output.
•
LPPYRA12S12
: With SDI-12 output.
The pyranometer is supplied factory calibrated and with a calibration report. The cali-
bration is carried out in accordance with the ISO 9847:1992 (type IIc) standard: ”Cal-
ibration of field pyranometers by comparison to a reference pyranometer”. The pyra-
nometer is calibrated by comparison with the reference sample calibrated annually at
WRC (World Radiation Center).
