The LIDAR-based cloud height sensor / ceilometer CHM 15k is prepared to work throughout the year and in any climate
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.
- Aerosol backscatter profile, cloud base height, cloud penetration depth, aerosol layer height, cloud cover, vertical visibility, Sky Condition Index
- 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
- 8350.00, 8350.01 incl. 8350.MOD, 8350.10, 8350.03
| Measuring principle | Lidar (optical, time of flight) |
| Measuring parameters | |
| Description | Aerosol backscatter profile |
| Range | 5 … 15,000 m (16 … 50.000 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 (CBH), Cloud penetration depth (CPD), Aerosol layer height (ALH) |
| Number of layers | 1 – 9 layer (programmable); 3 layer preset |
| Distance measurement accuracy against hard target | Greater of ±5 m (±16 ft) or ±0.2% |
| Additional quantities | Cloud cover in octas (WMO 2700), Vertical visibility in m, 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 hr |
| Laser-optical parameters | |
| Light source | Nd:YAG solid state laser |
| Wavelength | 1064 nm |
| Pulse energy | 7 µJ |
| Pulse repetition frequency | 5 – 7 kHz |
| Filter Bandwidth | 1 nm |
| Field of view receiver | 0.45 mrad |
| Operating Safety | |
| Environmental compliance | ISO 10109 – 11 |
| Laser protection class | 1M, IEC 60825-1:2014; complies with 21 CFR 1040.10 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007 |
| Protection level housing | IP65 |
| Electrical Safety | EN 61326 – 1 Class B |
| Certifications | CE 115 VAC version compatible with FCC/ CSA |
| International standards | Complies with ICAO frangibility requirements |
| Operating Conditions | |
| Temperature range | -40…+50 °C |
| Relative humidity | 0 … 100 % |
| Wind | 55 m/s |
| Physical | |
| Dimensions | 500 x 500 x 1550 mm |
| Weight | 70 kg (130 kg incl. Packaging) |
Documents
Brochure - Lufft - Ceilometers CHM 8k and CHM 15k 
Brochure - Lufft - Cloud Height Detection (DE/EN)
Certificate IEC60825 CHM15k Lasersystem Certification
Certificate IEC61010 TÜV Certification - CHM15k, CHM8k
EU declaration of conformity - CHM15k EU declaration of conformity - Lufft CHM15k
Firmware - Lufft - CHM15k 1 080 550
Contact us
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