Online dissolved oxygen analyzer Features: 144 x 144 mm microprocessor D.O. transmitter Waterproof design, suitable for wall/panel/pipe mounting Large LCD to display working status Time washing function with programmable time interval Compatible with France PONSEL fluorescence method sensors Combination keys to access Setting and Calibration mode to improve parameter protection "Environmental protection system is a difficult problem, because any industry can use environmental protection system. Enterprises and employees may not be aware of which applications use these components. But unless you use these environmentally friendly devices every day, it's easy to ignore them and their uses.