Vaisala Ceilometer CL51

  • Second generation of advanced single lens optics provides excellent performance also at low altitudes
  • Reliable operation in all weather: unsurpassed performance in vertical visibility and cloud detection during precipitation
  • Cloud reporting range up to 13 km (43,000 ft)
  • Backscatter profiling over full range up to 15 km (49,200 ft)
  • Detection of Cirrus clouds
  • Based on robust and affordable laser technology
  • Modular design for easy installation and maintenance
  • Extensive self-diagnostics with fault analysis
  • Field proven, fully automatic 24/7 operation in all weather conditions
  • Latest technology from the world leading manufacturer - installed base over 5000 ceilometers worldwide
Technical Specifications
Cloud reporting range0...13 km (0...43,000 ft.)
Backscatter profiling range0...15 km (0...49,200 ft.)
Reporting cycle programmable6...120 s, or polling
Reported quantities
Cloud hits (up to 3 layers) and status information
Cloud hits, status and backscatter profile
Emulation of CL31 and LD-40
Sky Condition (optional)
Operating environment
Temperature-55...+60 °C (-67...+140 °F)
Relative humidity0...100 %RH
Wind55 m/s
Inputs and outputs
Operating voltage100/115/230 VAC
Power consumptionmax. 310 W including heating
OutputsRS-232/RS-485/Modem V.21, V.22, V22bis
Total1531 x 364 x 354 mm
Measurement unit834 x 266 x 264 mm
Total46 kg
Measurement unit18,6 kg
Housing classificationIP65
For complete specifications, please see the brochure in "Documents".

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