The CS125 is an infrared forward-scatter visibility and present weather sensor for stand-alone use or with automatic weather stations including those for road, marine, and airport applications. The CS125 has an attached 5 m (16.4 ft) cable and DB9 connector.
Learn more about our CampbellAero™ Automated Weather Observing System (AWOS) Solution and our CampbellAero Software.
Benefits and Features
High performance sensor at a competitive price
Sensor design minimizes airflow disruption at measurement volume
Simple field calibration using optional calibration kit
Low power - suitable for remote application
Automatic status check for faults or window contamination
Incorporates automatic dew and hood heaters for all-weather operation
Type certified for aviation use by the German Meteorological Service, Deutscher Wetterdienst (DWD)
Operational | |
| Maximum Reported Visibility | 100 km (62.1 mi) |
| Minimum Reported Visibility | 5 m (16.4 ft) |
| Resolution | 1 m (3.28 ft) |
| Outputs | Present and past weather: identifies as standard mist, fog, drizzle, freezing drizzle, drizzle and snow, rain, freezing rain, rain and drizzle, rain and snow, and snow. 57 SYNOP present weather codes and associated METAR and NWS present weather codes - hail detection; past weather codes. |
| Accuracy |
|
| Precipitation Detection Sensitivity | 0.05 mm/h |
| Accumulation Reporting Range | 0 to 999.9 mm (0 to 39.37 in.) |
| Accumulation Accuracy | ±15% (against factory calibration standards in the laboratory, for liquid precipitation) |
| Accumulation Resolution | 0.1 mm (0.0039 in.) |
| Rain Intensity Range | 0 to 999.9 mm/h (0 to 39.37 in./h) (The maximum intensity reported is dependent on the mixture of precipitation falling.) |
| Intensity Accuracy | ±15% (against factory calibration standards in the laboratory, for liquid precipitation) |
| Intensity Resolution | 0.01 mm/h (0.00039 in./h) |
| Operating Temperature Range | -25° to +60°C (standard) |
| Extended Operating Temperature Range | -50° to +70°C or -40° to +70°C |
| Operating Humidity | 0 . . . 100% |
| Operating Wind Speed | Up to 60 m/s |
| Sensor Sealing | Rated to IP66 |
| Total Unit Power | Less than 3 W while sampling continuously (including dew heaters) |
Mechanical | |
| Material | Stainless steel and hard-anodized aluminum powder-coated |
| Mountings | Stainless-steel clip on V-bolt mounting to pole with diameter of 32 to 52.5 mm (1.26 to 2.07 in.) |
| Mounting Pole | An optical mounting pole is available to place the sample volume at 1.5 m (4.9 ft), as recommended by the WMO. |
| Frangible Mast | Frangible masts are available to customer requirements to meet ICAO recommendations (typically placing the sample volume at 2.5 m [8.2 ft]). |
| Visibility Sensor Dimensions | 540 x 640 x 246 mm (21.26 x 25.2 x 9.7 in.) including mount |
| Cable Length | 5 m (16.4 ft) |
| Sensor Weight | ~3 kg (6.61 lb) dependent upon mounting system |
Electrical | |
| -NOTE- | Lower power states can be achieved by less frequent sampling and remote control of heaters. Optional power supplies with battery backup available. Connectors in place of flying leads are available. A low-voltage shutdown level can be set to prevent backup batteries from being damaged. |
| Electronics Supply Voltage | 7 to 30 Vdc |
| Hood Heater Supply Voltage | 24 V (dc or ac) |
| Hood Heater Power | 2 x 30 W (total of 60 W) |
| Dew Heater Power | 2 x 0.6 W (total of 1.2 W) |
Interface | |
| Serial Interface | RS-232 or RS-485 |
| Serial Data Rates | 1200 to 115,200 bps (38,400 bps default rate) |
| Alarm Outputs | 2 x 0 to 5 V outputs, 32 mA (max) |
Optical | |
| -NOTE- | Lens contamination circuity monitors both the source and detector lenses for contamination/blockage at 1 s intervals. The sensor can be configured to adjust calibration for low to moderate window contamination. Light source stability control ensures stable operation through variations in temperature and with sensor aging. Corrected at 1 s intervals. |
| Emitter Light Frequency | 850 nm |
