Optical Sensors / CS140
CS140 Sensor für Umfeldleuchtdichte
Leistungsfähiger Sensor zum ökonomischen Preis
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Der CS140 ist ein hochwertiger Sensor für Umfeldleuchtdichte. Er liefert die Leuchtdichtedaten, die z.B. zur Bestimmung der Sichtweite von Lichtern an Start- und Landebahnen oder von Warnleuchten zu bestimmen.

Das Sichtfeld und der Höhenwinkel entsprechen den Praktiken in der Luftfahrt und  die Spektralantwort entspricht der CIE Kurve, die der typischen Antwort des menschlichen Auges entspricht.

Der CS140 entspricht den Standards für Runway Visual Range und den Standards der ICAO, der CAA in UK und der FAA (inklusive CAP670 und CAP746).

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Funktionen und Vorteile

  • Monitoring of internal supply voltages and temperatures
  • Elevated field of view with hood horizontal to give high resistance to contamination on the window
  • RS232/RS485 outputs so can operate independently of a host visibility sensor for flexible, reliable operation
  • Automatic window contamination detection
  • Configurable window contamination correction
  • High performance sensor at a competitive price
  • Incorporates automatic dew and hood heaters for all-weather operation
  • Low power consumption; suitable for solar power applications
  • Made in UK
  • Three year extended warranty available on this product
  • Type certified for Aviation use by the German Meteorological Service, Deutscher Wetterdienst (DWD)


Technische Beschreibung

The CS140 Background Luminance Sensor accurately measures background luminance over a wide range from 0 cd/m2 to a maximum of 45,000 cd/m2

The CS140 uses a photodiode with a spectral response close to the CIE human eye model and removes any unwanted wavelengths via an inbuilt band-pass filter.

The CS140 features a fixed 6˚ field of view as specified by the FAA. For ease of installation, the CS140 is simply mounted horizontally with the required 6˚ inclination already built into the design. (Other angles are possible via the sensor mounting bracket.)

The CS140 features a heated hood to prevent ice and snow from building up, dew heaters to prevent condensation on the glass window, and a dirty window detection system to measure window contamination.

The design is undamaged when pointed directly at the sun, allowing complete flexibility in orientation.

The CS140 has a rugged IP66 rated environmental enclosure that protects it from the harshest conditions and measures the atmosphere with high stability and repeatability.


Measurement Range 0 to 45,000 cd/m2
  • ±0.2cd/m2 (< 2cd/m2)
  • ±10% (> 2cd/m2)
Operating Temperature
  • -25° to +60°C (standard)
  • -40° to +70°C (extended, optional)
Operating Humidity 0 to 100%
Wind Speed Up to 60 m/s
Sensor Sealing Rated to IP66
Response Time 1 s
Mountings Stainless-steel V-bolt mounting to pole
Diameter 3.2 to 5.25 cm (1.26 to 2.07 in.)
Sensor Dimensions 36 x 18 x 9 cm (14.2 x 7.1 x 3.5 in.)
Weight ~2.4 kg (~5.3 lb) dependent upon mounting system
Shipping Weight 3.5 kg (7.7 lb)


-NOTE- Lower power states can be achieved by less frequent sampling and remote control of heaters.

Optional power supplies with battery back-up available.

A low-voltage shutdown level can be set to prevent back-up batteries from being damaged.
Electronics Supply Voltage 9 to 24 Vdc
Hood Heater Supply Voltage 24 V dc or ac
Hood Heater Power 48 W
Dew Heater Power 0.6 W
Total Unit Power < 1.5 W while sampling continously (including dew heater 15 W)


Serial Interface
  • RS-232 (full duplex, no hardware handshaking)
  • RS-485 (half duplex only)
Serial Data Rates 1200 to 115,200 bps (38,400 bps default rate)


-NOTE- Lens contamination circuitry monitors the window for contamination. The sensor can be configured to adjust calibration for contamination.
Field of View (FOV) 6° wide with sharp cut-off
Elevation Angle 6° with hood horizontal
Resolution 0.1 cd/m2

Kompatibel mit

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.


Product Compatible Note
CR1000 (retired)
CR200X (retired)
CR216X (retired)
CR300 Using the CR300 with the CS140 is not recommended, as this would use the only RS-232 connection on the datalogger.
CR5000 (retired)
CR9000X (retired)


Product Compatible Note
CR310 Using the CR310 with the CS140 is not recommended, as this would use the only RS-232 connection on the data logger.

Additional Compatibility Information

Datalogger Considerations

This sensor is compatible with any datalogger with a serial input.


CS140 Firmware v.5 (454 KB) 06-04-2016

Includes the current CS140 firmware.

Liste der Änderungen

CS140-OS8 Release v.8 (52kb) 25-07-2019

Release Note for Operating System OS8 for the Campbell Scientific CS140 Background Luminance Sensor

Campbell Scientific has introduced a new operating system, OS8, for the CS140 background luminance sensor. It is fully backwards compatible and is easily installed on all CS140 sensors. OS8 is available free of charge and can be downloaded from the Campbell Scientific website or supplied by email on request. Functionality, including data message formats is unchanged.

Main improvements:

  • Bug fixed to ensure that the user defined comms settings are saved, and not default comms settings, when Saving & Exiting, while in maintenance mode.
  • Bug fixed to ensure that the dirty window alarms of severity 1 and 2 are displayed when triggered.


Central Africa: Airport Weather System
Campbell Scientific’s system integrator, AUDIMOBIL LDA, recently upgraded the airport weather system in the S.......lesen Sie mehr