Bristol Industrial & Research Associates Ltd (BIRAL)

2 products found


  • Ambient Light Sensors

    Ambient light sensors measure background or ambient light levels. Biral sensors are typically used in aviation Runway Visual Range (RVR) systems and have a well defined field of view.

  • Biral - Model ALS-2 - Ambient Light Sensor

    Biral - Model 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.