Light from a Tungsten lamp (5) is precisely defined by the optics module (3)and by the NIR filter (4), passes through a sapphire window (2), and then through the process stream (1). The resulting light intensity is detected by a photodiode (6).
The resulting photocurrent is precisely amplified, converted, and analyzed by the converter. The converter provides real time measurements and can send outputs to the process control system.
