Overview
Highest confidence under low clouds
The new Lufft CHM 8k ceilometer empowers meteorologists at weather services and airports to make the right decisions with highest confidence and minimal maintenance. Especially in the critical height below 1 km, the Lufft CHM 8k detects cloud bases in any place and season with outstanding precision and reliability. Internal data storage and a battery backup enable unmatched sensor uptime and data availability even at the harshest conditions.
Benefits
Confident detection of low clouds with minimum False Alarm Rate (FAR) and an outstanding Probability of Detection (POD) even at extreme conditions
Maximum sensor uptime and data availability thanks to integrated data storage and a robust battery backup (-40deg to 60deg).
Safe and certified operation in compliance with UL50e (North America), TÜV (Europe), ICAO GRF.
Specifications
Technical Attributes
| Accuracy | ±16 ft (±5 m) |
| Battery Backup | No |
| Cable Length | 32.8 ft (10 m) |
| Casing IP Rating | IP65 |
| Cloud Detection Range | 16 - 26,246 ft (5 m - 8 km) |
| Compliance certifications | ISO 10109 - 11 1M, IEC 60825-1:2014 |
| Dimensions (free text) | 19.7 x 19.7 x 61 in (500 x 500 x 1550 mm) |
| DSL Modem | No |
| Field of View | 1.1 mrad |
| Filter Bandwidth | 25 nm |
| Interface | RS485 (ASCII communication) LAN (Web-Interface, (S-)FTP, NetTools) Optional: DSL modem, RS485 full dublex for service |
| Light source | Laserdiode |
| Measurement Range EU | 0 - 32,808 ft (0 - 10 km) |
| Number of Layers | 1 - 9 layer (programmable); 3 layer preset |
| Operating Frequency | 8 kHz |
| Power Consumption | 250 W (Standard) 450 W (in maximum heating mode) |
| Power supply | 115 VAC, ±10 % |
| Product highlights | Cloud base height (CBH), Cloud penetration depth (CPD), Aerosol layer height (ALH) Cloud cover in octas (WMO 2700), Vertical visibility in m, Sky condition index |
| Pulse Energy | 3 µJ |
| Relative humidity | 0 - 100 % |
| Resolution EU | Time: 2 - 600 s Range: 16, 33, 49 ft |
| Temperature range | -40 - +145 °F (-40 - +63 °C) |
| Wavelength | 905 nm |
| Weight EU | 154 lbs (287 lbs incl. Packaging) or 70 kg (130 kg incl. Packaging) |
| Wind Speed | 197 ft/s (60 m/s) |
Resources
Manuals (6)
Certificates (2)
Case Studies (1)
Guides (1)
Brochures (1)
Data Sheets (1)
Software/Firmware (2)
8350.SW
Lufft CHM Data Viewer
8349.SIM
Lufft Cloud Height Simulator for CHM 8k