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MS-20 Pyrgeometer

  • 4.5µm – 42µm flat spectral response
  • Low window heating
  • PT 100 temperature sensor
  • Temperature compensation
  • WISG traceable calibration
  • 5 years warranty

Pyrgeometer MS-20 is a scientific grade instrument designed to measure long-wave radiation. A special coated Silicon dome transmits incident radiation above 4.5µm by cutting off the shorter wavelengths of the Sun spectrum. The special meniscus shape provides 180°field of view. Due to very low window heating the MS-20 pyrgeometer can be used for daytime and nighttime measurements without need for shading.

With the optional MV-01 ventilator/heater the MS-20 can be operated free of condensation, frosts and snow in the harshest environmental conditions. Special albedo kit is available to measure net radiation.

MS-20 is supplied with WISG (World Infrared Standard Group) traceable calibration and 5 years warranty.

Response time 95%

< 18 Sec.


+/- 1 %


Approx. 4 µV/W/m²

Temperature response -10°C to 40°C

< 1 %

Operating temperature range

-40 – 80 °C

Wavelength range

4.5 – 42 µm

Dome temperature


Body temperature


Field of View FOV

180 °



Cable length

20 / 30 / 40 / 50 m

Ventilation unit


Albedo mounting kit

MS-albedo kit (for net radiation)