Watercut meter
（重定向自Water in oil）
A water cut meter measures the water content (cut) of crude oil and hydrocarbons as they flow through a pipeline. While the title "Water cut" has been traditionally used, the current API naming is OWD or On-Line Water Determination. The API and ISO committees have not yet come out with an international standard for these devices but there are however standards in place for fiscal automatic sampling of crude oil namely API 8.2 and ISO 3171.