Lufft CHM 15k Ceilometer
Reliable operation in any climate! The CHM 15k series is prepared to work throughout the year and in any climate.
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Key features
Great measuring range up to 15 km (50,000 ft)
Enhanced multiple cloud layer detection
Simple and eye-safe routine operation
Service-friendly modular device setup
Various data telegrams, including raw data
GUI software for device control and display of measured backscatter data in NetCDF format
Due to their double case structure combined with a window blower and an automatic heating system, the ceilometer's performance will not be affected by fogging, precipitation, freezing or overheating.
High optical sensitivity for exact results! Accurate results in day- and night-time are obtained by a solid state laser source with long lifetime, small bandwidth filters and a highly sensitive photo receiver.
Technical specification
| Dimensions | 500x500x1550mm |
| Weight | 70kg (130kg incl. packaging) |
| Temperature range | -40...+50°C |
| Relative humidity | 0...100% |
| Wind | 55 ms^-1 |
| Standard interface | RS485, LAN |
| Optional interface | RS232 or Modem V.21, V22, V.22bis |
| Communication | LAN Port: Web-Interface Serial Port: JO-DataClient Software or standard terminal programs |
| Optional software | Viewer-Software for convenient visualising measured results |
| Power supply | Standard: 230 VAC, ±10% or Optional: 110 VAC, ± 10% |
| Power consumption | 250 W (Standard), 800 W (in maximum heating mode) |
| UPS functionality (opt.) | Internal backup battery for electronics, > 1 hrs |
| Environmental conditions | ISO 10109-11 |
| Laser protection class | 1M, DIN EN 60825-1:2007 |
| Protection level housing | IP65 |
| EMV | EN 61326-1 |
| Electrical safety | DIN EN 61010-1 |
| Measuring principle | optical (LIDAR) |
| Measuring range (Cloud base height) | 5m ... 15.000m (16 ft ... 50.000 ft) |
| Accuracy (measured on hard target in 10 km distance) | ±5m (±16 ft) |
| Measurement resolution | 15m (16 ft) |
| Sampling rate | 100 MHz |
| NetCDF raw data resolution | 15m (full range, compact file sizes); 5m (5m to 150m range) |
| Measurement time | 2s ... 600s (wählbar) |
| Targets | Aerosols, clouds |
| Quantities to be measured | CBH1, preset: 3 layers; maximum 9 layers; Cloud penetration depth; Cloud amount and sky condition index; Vertical visibility (VOR); Height of aerosol layer; Aerosol backscatter profiles; |
| Light source | Nd:YAG solid-state laser, wavelength 1064 nm |
