SL2023-736/ARIN MAN NOX sensors for SCR and EGR

MAN Energy Solutions uses Continental NOX sensors for both SCR and EGR systems (O2 sensors). Continental guarantees that their NOX sensors have a lifetime of 2,000 hrs. After this point in time, Continental recommends exchanging the sensors.

For EGR, this means roughly three months of life expectancy, since the sensors are always ON.
Due to the short lifetime expectancy, the sensors are not part of the engine maker’s warranty, but are considered to be a consumable.
Any failure after 2,000 running hours of sensors purchased directly from MAN Energy Solutions (MAN ES) cannot be claimed against MAN ES, and we recommend keeping a stock of spare sensors on board each vessel. The expected shelf lifetime of a sensor is approx. two years.

More information is given on page 2.