MS-802 Pyranometer

MS-802 Pyranometer

EKO Solar Radiation sensor.jpg
EKO Solar Radiation sensor MS-802
EKO Solar Radiation sensor MS-802F


  • Secondary standard Pyranometer

  • Fast Response time (95% < 5s)

  • Temperature compensated in a wide temperature range

  • High quality optical glass domes for proper cosine reponse

  • MS-802F is a MS-802 with 110VAC/12 VDC ventilation system to prevent any possible influence of frost, snow and dust.

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The MS-802 Secondary Standard Pyranometer is the ultimate reference sensor to measure global solar irradiance with the highest precision. Its robust brass mechanical construction makes it a durable sensor suitable to be used in harsh environments. The MS-802 is used as standard for PV research and climatology studies around the world.

In combination with a Sun tracker (STR-series) or manual shading ring (RSR-01), respectively the Global Normal Incidence (GNI) and Diffuse (DHI) irradiance can be measured. The MS-802F is a MS-802 with integrated ventilator unit to improve the performance under various environmental conditions (prevents or minimizes the effect of dew, rain, snow, ice and dust).


ISO 9060 classification Secondary Standard
Response time 95% (sec) < 5
Zero offset - Thermal radiation (200W/m²) < 6 W/m²
Zero offset - Temperature change (5K/hr) < 2 W/m²
Non-stability (change/year) < 0.5 %
Non-linearity (at 1000W/m²) < 0.2 %
Directional response (at 1000W/m²) < 10 W/m²
Spectral selectivity (0.35-1.5µm)  < 1 %
Temp. response (for 50°C band) < 1 %
Tilt response (at 1000W/m²) < 0.2 %
Sensitivity (µV/W・m-2) Approx. 7
Impedance (Ω) Approx. 500
Operating temperature range (°C) - 40 to +80
Cable length 10m
Wavelength range  285 to 3000 nm


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