• Real time in-line measurement• Drift and noise-free measurement• Down to 5 AU (1 cm OPL), deeper absorbance measurements with shorter pathlengths• Zero maintenance measurement cells & fiber optics• Long life LED light source that is easy to change• Analogue output (0/4-20 mA)• Modbus (slave) over TCP/IP & Profibus (optional)• Local & web based graphical user interface (TCP/IP)• ATEX Exd IIB + H2 T6 IP66 Category II 2 G (optional)