MS-90 DNI Sensor

  • DNI measurement (<10% uncertainty)
  • Pulsed analog output 0-2V
  • Spectral range 300 - 2500nm
  • No sun-tracker required
  • Configurable to measure DNI / GHI / DHI
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A new sensor which accurately measures the Direct Normal Irradiance (DNI) without the requirement of a sun-tracker. It features a rotating mirror, which only reflects the sunbeam onto a thermal detector. The pulsed analog output can work with dataloggers with a pulsed analog input or peak hold function. The analog pulse (0-5V) is proportional to the DNI.  

It can be used in combination with any pyranometer to measure the DNI and Global Horizontal Irradiance (GHI). Hence the Diffuse Horizontal Irradiance (DHI) can be calculated. 

A revolutionary method to capture the direct sunbeam. MS-90 is a reinvention of the MS-093 sunshine duration meter, which is a reliable and accurate sunshine duration meter, which has been deployed within the AMeDaS network in …

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System configuration


  Specifications MS-90
  ISO 9060:2018 -
  Output 0-2V (Pulse)
Temperature response -20°C to 40°C +/- 5 %
Non-linearity +/- 2.5 %
  Operating temperature range -20 - 50 °C
Wavelength range 300 - 2500 nm (50% points)
  Power supply 10.5 - 12.5 VDC
  Dimensions mm 350 (W) x 250 (L) x 200 (H) (Incl. optional base plate)
Weight 2.5 kg
  Ingress protection IP 67
  Cable length 10 m
  Geographic application Lattitude (-58º to 58º ) / Longitude (0º to 360º)
Power consumption < 5 W

C-Box Modbus Processing interface

Applications and uses

Weathering of materials is most often an irreversible process affecting the cosmetic properties or strength of materials. This aging process is mainly driven by UV radiation, Heat and reactive elements …

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