Lufft – Ceilometer CHM 15k “NIMBUS”

The cloud height sensor / Lidar based Ceilometer CHM 15k series is prepared to work throughout the year and in any climate.






Example of use of the Cloud Height Sensor / Ceilometer CHM 15k

The lidar based Cloud Height Sensor / Ceilometer CHM 15k is a simple, one-wavelength backscatter lidar. Within its operating range of up to 15 kilometers it reliably detects multiple cloud layers, cirrus clouds, and aerosol layers. The ceilometer is therefore often used for the following measurable characteristics and events: Cirrus clouds up to 15.000 km height

  • Aerosol backscatter profiles
  • Cloud amount
  • Boundary layer height
  • Rain and precipitation
  • Cloud coverage
  • Fog
  • Vertical visibility

National and private weather services as well as environmental agencies and national and international airports are among our customers.

The Lufft CHM 15k has a double-walled housing combined with integrated fan and automatic heating system. Thus it provides reliable protection against misting, precipitation, freezing or overheating.

Exact results due to high sensitivity!
Reliable and accurate results at any time of the day or night are ensured by the use of long-life laser sources, filters with narrow bandwidth and high-sensitivity photodetectors.

  • Cloud heights, cloud coverage, height of the mixture layer, boundary layer
  • Optical (LIDAR)
  • Measuring range up to 15 km (50,000 ft), optimized detection of several cloud layers, simple eye-safe operation, service-friendly modular device design, various data telegrams including raw data
  • RS485, LAN, RS232 oder Modem V.21, V22

Advantages of the Cloud Height Sensor / Ceilometer CHM15k

The Lufft CHM 15k is a LIDAR cloud height sensor based on a single wavelength backscattering technique. It detects various cloud layers (max 9), cloud penetration depths, issues the Sky Condition Index, vertical field of view (VOR), aerosol layer heights, boundary layers and aerosol backscatter profiles with a range of up to 15 km.

The sensor achieves excellent signal quality thanks to its stable wavelength and its Nd:YAG narrow-beam microchip laser operating in the 1064 nm range. In addition, its technology enables efficient daylight suppression and reduces temperature fluctuations to a minimum.

Due to its pulse energy and laser frequency it is eye-safe and classified as a 1M laser product.

Moreover, the CHM 15k features a user-friendly design that enables unattended, continuous operation.

The CHM 15k is a state-of-the-art solution for today’s diverse requirements of atmospheric research. It is suitable both as a sophisticated aerosol research instrument and as part of a large measurement network.

Additional information