The CS120A uses tried-and-tested, infrared forward-scatter technology, and it uses the proven 42° scatter angle to report meteorological observable range (MOR) for fog and snow in the range of 5 to 75,000 m (16.4 to 246,063 ft). It combines a high specification with a very competitive price. The CS120A is ideal for stand-alone applications or in combination with automatic weather stations in road, aviation, solar-energy, and wind-energy environments.
For aviation applications, users can be assured that the CS120A complies with UK CAA, FAA, and ICAO guidance and meets or exceeds all recommendations and specifications. (This includes CAP437, CAP670, and CAP746.)
The CS120A is certified by Deutscher Wetterdienst as suitable for use to control wind turbine obstruction light systems as specified by 506/04, General Administrative Rules for the Identification of Aircraft Obstructions.
- High performance sensor at a competitive price
- Sensor design minimizes airflow disruption at measurement volume
- Incorporates automatic dew and hood heaters for all-weather operation
- Simple field calibration using optional calibration kit
- Low power—suitable for remote application
- Automatic status check for faults or window contamination
- Type certified for aviation use by the German Meteorological Service, Deutscher Wetterdienst (DWD)
| Signal Type/Output | RS-232, RS-485 |
| Measurement Description | Meteorological Observable Range (MOR) |
| Maximum Reported Visibility | 75 km (46.6 mi) |
| Minimum Reported Visibility | 5 m (16.4 ft) |
| Accuracy |
|
| Resolution | 1 m (3.3 ft) |
| Mounting | Stainless-steel V-bolt bracket that attaches to a pole with a 32 to 52.5 mm (1.25 to 2 in.) outer diameter |
| Electronics Supply Voltage | 7 to 30 Vdc |
| Total Unit Power | < 3 W while sampling continuously (including dew heaters) |
| Standards | Frangible masts are available to customer requirements to meet ICAO recommendations (typically placing the sample volume at 2.5 m [8.2 ft]). |
| Sensor Dimensions | 540 x 640 x 246 mm (21.26 x 25.2 x 9.7 in.) including mount |
| Sensor Weight | ~3 kg (6.6 lb) depending on mounting system |
Optical/Pulse |
|
| LED Center Wavelength | 850 nm |
| LED Spectral Bandwidth | ±35 nm |
| Light Pulse Rate | 1 kHz |
Environmental |
|
| Operating Temperature Range | -25° to +60°C (standard) |
| Extended Operating Temperature Range | -40° to +70°C (This extended version is available as a special. Contact Campbell Scientific for more information.) |
| Operating Humidity Range | 0 to 100% |
| Sensor Sealing | Rated to IP66 |
| Wind Speed | Up to 60 m s-1 |
| Sensor Heater Threshold |
|
DSP & Dew Heaters |
|
| Power | 2 x 0.6 W (total of 1.4 W) for dew heater |
| Typical Current Consumption @ 12 Vdc |
|
Hood Heater |
|
| Supply Voltage | 24 V dc or ac |
| Power | 2 x 30 W (total of 60 W) |
Interface |
|
| Serial Interface | RS-232 or RS-485, 8 bit data bytes, 1 stop bit |
| Serial Data Rates | 1200 to 115,200 bps (38,400 bps default rate) |
