Diffuse solar irradiance is critical for understanding cloud cover, atmospheric transparency and the energy balance at a measurement site. This series combines a Spectrally Flat Class A pyranometer with an adjustable shadow ring, which blocks direct solar radiation so the sensor measures diffuse irradiance on a flat surface.
The thermopile sensor covers 200…4000 W/m2 and a 283…2800 nm spectral range. ISO 9060:2018 Class A performance, WMO compliance and factory calibration according to ISO 9847:2023 support high-quality data for weather forecasting, climate modeling, solar energy assessment and environmental research.
Installation is designed for precise field alignment. The shadow ring, goniometer, adjustable feet and integrated bubble level support correct positioning, while IP 67 protection and durable ring and stand materials help protect the structure outdoors. Depending on the model, outputs include RS485 Modbus-RTU, configurable analog, 2-wire 4…20 mA or passive mV.
The adjustable shadow ring blocks direct solar radiation from reaching the sensor throughout the day, allowing diffuse irradiance measurement.
The pyranometer uses a thermopile sensor with a black matt coated sensitive surface and internal compensation circuit.
The stand includes a shadow ring, graduated sliding bars, goniometer, adjustable feet and integrated bubble level for alignment and leveling.
LPS13Mxx models include internal temperature, relative humidity and pressure sensors. Tilt monitoring is available on models with option T.
LPS13MAx models provide 4…20 mA by default, with 0…20 mA, 0…1 V, 0…5 V or 0…10 V alternatives via DATAsense software.
Correction factors are applied to measured diffuse irradiance because the shadow ring also intercepts part of the diffuse radiation.
Code: LPS [1] [2] [3] [4]
Example: LPS13M0T
[1] Type
13 = Spectrally Flat Class A - ISO9060:2018
[2] Communication output
M = Modbus RS485
[3] Signal output
0 = No
A = Standard Analog Output
[4] Additional sensor
0 = No
T = Tilt Sensor
Code: LPS [1] [2] [3] [4]
Example: LPS130P0
[1] Type
13 = Spectrally Flat Class A - ISO9060:2018
[2] Communication output
0 = No
[3] Signal output
C = 4...20 mA current loop
P = mV
[4] Additional sensor
0 = No
