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OTT HydroMet - Model LUFFT CHM 8k -Cloud Height Sensor / Ceilometer
The LIDAR-based cloud height sensor / ceilometer LUFFT CHM8k is prepared to work throughout the year and in any climate. The LUFFT CHM 8k is the latest ceilometer from Lufft. Using the Lidar technique, it detects backscatter aerosol profiles / structure in multiple layers, cloud bases, cloud penetration depths as well as vertical visibility and issues the sky condition index. It has an operating range of up to 8,000m (26,200 ft) and is equipped with an integrated controller offering a fully embedded real-time calculation of all target parameters and comfortable user interfaces. The Lufft ceilometer series is prepared to work throughout the year and in any climate. Due to their double case structure combined with a window blower and an automatic heating system, the ceilometers are free of fogging, precipitation, freezing or overheating issues.
- Parameters measured: Aerosol backscatter profile, cloud base height, cloud penetration depth, aerosol layer height, cloud cover, vertical visibility, Sky Condition Index
- Measurement technology: Optical (LIDAR)
- Product highlights: Measuring range of up to 8 km (26.246 ft), simple & eye-safe, service-friendly due to modularity, various data telegrams, sensitivity in the range of the Lufft CHM 15k, suitable for the most demanding environments
- Interfaces: RS485 (ASCII communication), LAN (Web-Interface, (S-)FTP, NetTools); optional: DSL modem, RS232 for service
These are the advantages of the ceilometer CHM8k:
- Rugged housing and service-friendly operation
- Robust against fogging, precipitation, freezing or overheating
- Robust against saturation problems due to fog, low stratus clouds that can occur in single axis ceilometers
- High accuracy and simultaneous measurements of several parameters
- No compromises with regards to functions/ quality compared to CHM15k
- ICAO conform
The fields of application / users / insallations sites of the Lufft CHM8k ceilometer are:
- Weather / meteo services
- Automated Surface Observing Systems (ASOS)
- Airports / aviation
- Environmental Protection Agencies or universities (for environmental studies of air quality, fine dust & mixing layers)
- Heliports
- Measurement Technology :
- Measuring principle : Lidar (optical, time of flight)
- Measurement parameters :
- Description : Aerosol backscatter profile
- Range : 5 m … 8 km (16 … 26.246 ft)
- Time resolution : 2 … 600 s
- Range resolution : 5, 10, 15 m
- Quality and auxiliary values : External and internal temperature, window status, laser status, receiver status
- Target parameters :
- Quantities given in layers : Cloud base height, cloud penetration depth, aerosol layer height
- Accuracy (measured on hard target in 10 km distance) : ±5 m (±16 ft)
- Additional quantities : Cloud cover, vertical visibility, Sky Condition Index
- Communication :
- Standard interfaces : RS485 (ASCII communication); LAN (Web-Interface, (S-)FTP, NetTools)
- Optional interfaces : DSL modem, RS232 for service
- Electrical parameters :
- Power supply : 230 VAC or 115 VAC, ±10 %
- Power consumption : 250 W (Standard); 800 W (in maximum heating mode)
- UPS functionality (opt.) : Internal backup battery for electronics, > 1 hrs
- Laser-optical parameters :
- Light source : Laser diode
- Wavelength : 905 nm
- Pulse energy : < 3 µJ
- Pulse repetition frequency : 8 kHz
- Filter Bandwidth : 25 nm
- Field of view receiver : 1.1 mrad
- Operating Safety :
- Environmental compliance : ISO 10109 - 11
- Laser protection class : 1M, IEC 60825-1:2014
- Protection level housing : IP65
- Electrical Safety : EN 61326 - 1 Class B
- Certifications : CE
- Operating Conditions :
- Temperature range : -40 ... +55 °C
- Relative humidity : 0 ... 100 %
- Max. wind strength : 55 m/s
- Physical :
- Dimensions : 500 x 500 x 1550 mm
- Weight : 70 kg (130 kg incl. Packaging)