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MS-80M Pyranometer

Make: Eko (Japan)

Model: MS-80M

  • ISO 9060:2018 Class A (Secondary standard)
  • Sub-category “Spectrally flat”
  • Quartz diffusor technology
  • ISO 17025 certified calibration
  • 5 year warranty and recommended recalibration

MS-80M is a “Spectrally flat” ISO 9060:2018 Class A pyranometer. The innovative patented design was inspired by the combination of latest technologies and state-of-the-art thermopile sensor, enabling a breakthrough in unprecedented low zero-offset behaviour and fast sensor response.

The compact sensor with single dome, based on a isolated thermopile detector and Quartz diffusor is immune to offsets and integrates all optional value added functions such as a ventilator, heater and different industrial interfaces. The heater and ventilator are recommended, particularly over areas impacted by dew, frost, snow, and dust.

The MS-80M is a MS-80 with built in MODBUS RTU 485 converter, which is compatible to the industrial output standards. Due to the ultra-low temperature dependency and exceptional non-linearity characteristics, the converter guarantees an optimal sensor performance, under any environmental conditions.

The MS-80 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 ISO/IEC17025/9847.

The sensor has 5 year warranty, 5 year recommended re-calibration interval and no longer the requirement for the desiccant to be changed.


Eko (japan)



ISO 9060:2018

Class A

ISO 9060:1990

(Secondary Standard)

Sub-category "Spectrally flat"


Sub-category "Fast response"

Not Compliant


Digital (Modbus RTU)

Response time 95%

< 1 Sec.

Zero off-set a) 200W/m²

+/- 1 W/m²

Zero off-set b) 5K/hr

+/- 1 W/m²

Complete zero off-set c)

+/- 2 W/m²

Non-stability change/1 years

Non-stability change/5 years

+/- 0.5 %

Non-linearity at 1000W/m²

+/- 0.2 %

Directional response at 1000W/m²

+/- 10 W/m²

Spectral error

+/- 0.2 %

Temperature response -10°C to 40°C

+/- 0.5 %

Temperature response -20°C to 50°C

+/- 0.5 %

Tilt response at 1000W/m²

+/- 0.2 %



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

Power supply

12 – 24 VDC

Power consumption

0.2 – 0.3 W

Additional signal processing errors

+/- 1.5 W/m²