MS-321LR Sky Scanner

  • Daylight analysis measurement system
  • Sky Irradiance and Illuminance
  • 145 sequential measurements
  • Auto measurement schedule
  • Integrated values over full hemisphere
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The automatic Sky Scanner MS-321LR is designed only to measure Luminance and Radiance of the sky hemisphere. The sensor has 2 highly sensitive detectors which respond to the low light levels of the diffuse sky and will automatically block direct radiation by the active shutter function.

The sensor with a viewing angle of 11 degrees will capture the hemisphere in 145 sequential steps. The sensor is attached to a tracker positioner with two-axis control. The MS-321LR features a precise tracking mechanism that achieves high durability and repeatability. Measurements are based on the CIE108-1994 recommendation (CIE - International Commission on Illumination, IDMP - International Daylight Measurement Program).

The luminance values are measured per kcd/m2 and radiance value per W/m2 …

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  Specifications MS-321LR
  ISO 9060:2018 -
  Output Digital
  Luminance range < 50 kcd/m2
  Irradiance range < 300 W/m2
  Sky scanning time 145 points < 4.5 min.
  Operating temperature range -40 - 50 °C
  Communication RS-422 / 232C
  Power supply 100 to 240 VAC, 20W
  Dimensions mm 430 (W) x 380 (L) x 440 (H)
  Weight 12.5 kg
  Ingress protection IP 65
  Cable length 10 m

Applications and uses

Light pollution is a delicate issue in highly populated areas. Such as in large cities and industrial areas. Light pollution can have a significant impact on life, the life of …

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