Diffuse solar irradiance reveals how clouds, atmospheric transparency and local conditions shape available solar energy. This series combines a Spectrally Flat Class B 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. Classification according to ISO 9060:2018, WMO compliance and factory calibration according to ISO 9847:2023 support dependable data for weather forecasting, climate modeling, solar energy assessment and environmental research.
Field use is built into the design. The shadow ring, goniometer, adjustable feet and integrated bubble level support correct positioning, while IP 67 protection and durable materials help protect the complete 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.
LPS12Mxx models include internal temperature, relative humidity and pressure sensors. Tilt monitoring is available on models with option T.
LPS12MAx 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: LPS12M0T
[1] Type
12 = Spectrally Flat Class B - 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: LPS120P0
[1] Type
12 = Spectrally Flat Class B - ISO9060:2018
[2] Communication output
0 = No
[3] Signal output
C = 4...20 mA current loop
P = mV
[4] Additional sensor
0 = No
