CS140

CS140 Background Luminance Sensor (-25 to + 60C), 5m (17ft) Cables

The CS140 is a high-quality background luminance sensor. It provides the luminance data required to assess the visibility range for lights such as runway lights or warning lights.

The field of view and elevation angle follow aviation practice, and the spectral response follows the CIE curve that matches the typical response of the human eye.

The CS140 meets the standards required for Runway Visual Range, as well as the standards of ICAO, the UK CAA and the FAA. (This includes CAP670 and CAP746.)

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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.