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MS-20 Pyrgeometer

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.


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


Specifications (Typical) MS-20
Response time 95% < 18 Sec.
Non-linearity +/- 1 %
Sensitivity 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 PT-100
Dome temperature PT-100
Field of View FOV 180 °
Cable length 10 m
Ventilation unit MV-01
Albedo mounting kit MS-albedo kit (for net radiation)


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