Oceanic Systems 3271 Fuel Sender calibration by admin | Aug 27, 2019 | Engine Room, Fuel | 0 comments The 3271 Volumetric Fuel Sender provides very accurate measurement and output of either the remaining Fuel LEVEL or the remaining Fuel VOLUME to the NMEA2000 network. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.