Barco LCD sensor B4100035 High-precision colorimeter for medical displays. The Barco LCD sensor is an industry-leading colorimeter featuring Barco-specific calibration technology. Allowing seamless integration with MediCal QAWeb – our unique online service for automated calibration, Quality Assurance, and asset management – this colorimeter offers the best value for money. The LCD sensor analyzes color contrast and brightness in no time and with the highest accuracy. The optical system supports displays with all current and emerging backlight technologies, including LED.