AtmosVue-BLM background luminance sensor

The AtmosVue-BLM Background Luminance Sensor provides the luminance data required to assess the visibility range for lights, such as runway or warning lights. It accurately measures background luminance over a wide range from 0 cd/m² with a maximum of 45,000 cd/m². The sensor uses a photodiode with a spectral response close to the CIE human eye model and removes any unwanted wavelengths with a built-in band-pass filter.

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

A heated hood will prevent ice and snow build up, dew heaters will prevent condensation on the glass window, and a dirty window detection system will measure window contamination.

The sensor is undamaged when pointed directly at the sun, allowing complete flexibility in orientation. In addition, the sensor has a rugged IP66 rated environmental enclosure that protects it from the harshest conditions and allows the sensor to measure the atmosphere with high stability and repeatability.