The FDO 700 IQ Sensor features Intelligent Membrane Technology (IQMC), where factory calibration data is stored on a memory chip permanently affixed to the membrane and transmitted when connected to the sensor, eliminating the need for manual re-calibration. The sensor incorporates Green Light Technology (GLT) instead of UV light which prevents early aging of fluorescent dye and increases stability. The Equal Path Reference System (EPRS) utilizes identical optical components for measurement and reference channel resulting in minimal drift throughout sensor’s lifetime.