An oil content meter (OCM) is an integral part of all oily water separator (OWS) systems.
[1] The OCM continuously monitors how much oil is in the water that is pumped out the discharge line of the OWS system.
[2] The OCM will not allow the oil concentration of the exiting water to be above the Marpol standard of 15 ppm.
[1] An OCM is a small part of what is called the oil discharge monitoring and control system.
[5] Oil content meters measure how effective the oily water separators on a ship are functioning.