Calibrator ALS-2

The ALS-2 Ambient Light Sensor Calibrator provides a quick and simple method of verifying the performance of the ALS-2 in the field Area: Ambient Light Sensors The ALS-2 Calibrator provides a quick and simple method of verifying the performance of the ALS-2 in the field. The requirement to regularly check the performance of ambient light sensors (also referred to as background luminance meters) used in aviation systems can be costly and time consuming if the sensor must be removed and sent away for testing. The often used alternative of observing a change in output when the window is blocked cannot be considered to provide a reliable indication of performance in an aviation system. The ALS-2 calibrator has been designed to reduce operational downtime to the absolute minimum whilst ensuring that the ALS-2 under test is both operational and correctly calibrated. It is simple to use by non-specialist staff and comes supplied in a rugged carry case with battery charger and instruction manual. The battery powered calibrator slips over the hood of the ALS-2 and is held securely in place via a locking ring. The calibrator then communicates with the ALS-2 via an optical link, removing the need to disconnect cables or send commands to the sensor. The calibration of the ALS-2 is then checked at its zero point and against a known brightness. If any adjustments are required, this is performed automatically by the calibrator. The operator is kept informed throughout this process via status indicators on the calibrator. A complete calibration test and re-calibration (if required) is typically completed in less than 5 minutes.