The ALS-2 Ambient Light Sensor is designed to measure background luminance as part of a Runway Visual Range (RVR) system. Mounted alongside the runway the ambient light sensor is often deployed with a visibility meter to provide the data necessary for calculation of RVR.
Designed to comply with specifications and guidelines produced by the International Civil Aviation Organisation (ICAO), World Meteorological Organisation (WMO) and the Federal Aviation Administration in the USA (FAA), the ALS-2 meets all the requirements for use in typical RVR systems. The ability to connect the sensor directly to a Biral visibility or present weather sensor and have the background luminance data incorporated into the visibility sensors data string simplifies system design and construction.
Designed to FAA and ICAO requirements
2 to 40,000 Cdm-2 measurement range
Choice of serial digital or analogue outputs
Simple and quick in field calibration
Direct connection to Biral visibility and present weather sensors
Extensive self-test capabilities
-60°C to 70°C operating range