Radar tank level indicating system for measurement of water content in shipboard tank involving identification of fuel-water interface

摘要

A microwave radar signal system generates separate level indicating signals for transmittal through a sounding tube into a contamination tank having a mixture of fuel and gross free water collected therein. The separate level indicating signals are thereby respectively reflected from the level of a top surface of the collected liquid mixture and a lower level of an interface between the fuel and the gross free water portions of the mixture to respectively provide data for determination of total liquid volume collected and the volumetric content of the fuel therein. The interface level location is established by means of a floatation ball disposed within the sounding tube, from which level indicating signals are reflected.