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MS-802 Pyranometer


Make: Eko (Japan)

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)

Sub-category "Spectrally flat"


Sub-category "Fast response"

Not Compliant


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

Non-stability change/1 years

+/- 0.5 %

Non-linearity at 1000W/m²

+/- 0.2 %

Directional response at 1000W/m²

+/- 10 W/m²

Spectral error

+/- 0.23 %

Temperature response -10°C to 40°C

+/- 1 %

Temperature response -20°C to 50°C

+/- 1 %

Tilt response at 1000W/m²

+/- 0.2 %


Approx. 7 µV/W/m²


Approx. 500 Ω

Operating temperature range

-40 – 80 °C

Irradiance range

0 – 4000 W/m²

Wavelength range

285 – 3000 nm (50% points)

Ingress protection IP


Cable length

10 m