Ambient Light

ALS-2 Ambient Light Sensor

Add to budget
Imagen de: ALS-2 Ambient Light Sensor

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.

Measurement Background luminance 2-40,000 Cdm-2 (0.5-11,700 fL)
Serial Output RS232, RS422
Analogue Output Optional – 2 x Analogue outputs
Low Output 2-4,000 Cdm-2 High Output 20-40,000 Cdm-2
Spectral Response Wavelength sensitivity range 420-675 nm, peak 565 nm. Analogous to CIE luminous spectral efficiency
Measurement Error <10%
Field of View
Averaging Period 60s
Sensor Power 9-36 V DC (2W)
Hood Heating Power 12W (24V AC or DC)
Window heating and contamination monitoring Fitted
Operating Temperature -40°C to 70°C, -60°C to 70°C (With extended heating Option)
Operating Humidity 0 – 100% RH
Protection rating IP66
Weight (Sensor Head) 1.5kg
Imagen de ALS-2 Ambient Light Sensor

Contact us

If you are thinking of carrying out a project, would like to purchase any instrumentation type or would like more information about DILUS services, please leave your contact information. The team will contact you as soon as possible.ALS-2 Ambient Light Sensor, leave your details. The team will contact you as soon as possible.

    Dilus is 100% compliant with the General Data Protection Regulation (GDPR). For more information on how we collect, store and process your private information in accordance with GDPR, please see our privacy policy. This policy was last updated in January 2020.