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MS-802 Pyranometer


Make:  Eko        Model: MS-802
✅ ISO 9060:2018 Class A (Secondary standard)
✅ Sub-category “Spectrally flat”
✅ Temperature compensation
✅ 5 year warranty
✅ MS-802F with ventilation

The MS-802 ISO 9060:2018 Class A (Secondary standard) pyranometer is a reliable reference sensor to measure global broad-band radiation with high precision. It is used as a standard in PV research and climatological studies around the world.

A high quality double-dome construction is adopted to improve the accuracy of the measurement and to minimize unwanted thermal offsets. The ventilation unit of the MS-802F model will reduce the deposition of dust, dew, frost, snow.

The MS-802 pyranometers are manufactured in a consistent way followed by strict quality inspection and performance evaluation. For each sensor the directional response and temperature dependency are measured and validated through a measurement report that comes with the sensor. EKO provides a unique calibration compliant to the international standards defined by ISO9847.


Eko (Japan)




ISO 9060:2018: Class A
ISO 9060:1990: (Secondary Standard)
Spectrally flat
Fast response


Analog (mV)

Response time 95%

< 5 Sec.

Zero off-set a) 200W/m²

+/- 6 W/m²

Zero off-set b) 5K/hr

+/- 2 W/m²

Long-term instability

Non-stability change/1 years: +/- 0.5 %


Non-linearity at 1000W/m² : +/- 0.2 %

Spectral Error

+/- 0.23 %

Temperature Response

Temperature response -10°C to 40°C: +/- 1 %
Temperature response -20°C to 50°C: +/- 1 %

Tilt Response

Tilt response at 1000W/m²: +/- 0.2 %


Approx. 7 µV/W/m²

Operating Conditions

-40 – 80 °C

Measuring Range

0 – 4000 W/m²

Spectral Range

285 – 3000 nm (50% points)

Protection Level

IP 67

Cable length

10 m