BL-01 Sunshine recorder

Note: this product is obsolete

  • Measures sunshine hours
  • Onboard GPS
  • Analog and digital output
  • Non-moving parts
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The Blake-Larsen Sun Recorder is a simple and unique sensor to determine sunshine duration. It detects sunshine duration as the human eye would do by its design and measuring principle. In contrast with present methods, it even determines sunshine duration with dusk and dawn.

The Blake-Larsen Sun Recorder is unique! Sunshine is determined by mimicking the way a human would determine whether the sun shines. Light, reflected by the dome, passes through a special filter unto the LUX-sensor. A scientifically deduced algorithm then determines whether the sun is shining or not. Research and thorough testing ensured our method confines with the WMO standard.

The Blake-Larsen Sunshine Recorder is a smart sensor to measure sunshine duration with high accuracy (uncertainty 0.3 ...

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  Specifications BL-01
  ISO 9060:2018 -
  Output 5V/1V, 20mA/4mA and open drain switch
Directional response at 1000W/m² -
Temperature response -20°C to 50°C -
Non-linearity at 1000W/m² -
  Operating temperature range -20 - 50 °C
Wavelength range 300 - 800 nm (50% points)
  Power supply 12-30
  Dimensions mm 160x100x83 / Ø83x74 mm
Weight 0.8 kg
  Ingress protection IP 65
Power consumption < 0.5 W
  Cable length 10 m
  Geographic application Lattitude (-90º to 90º ) / Longitude (0º to 360º)