This document gives an introduction into modern tank gauging, how and where it can be used.
Accurate Servo- and Radar gauging, Hydrostatic Tank Gauging (HTG) and the Hybrid Inventory Management System (HIMS), combining the advantages of all systems, are described. An uncertainty analysis of the tank inventory data is described and the results are used for a concise comparison of tank gauging systems. Uncertainties caused by the installation are listed and clarified. Current technologies employed in tank gauging, and future trends and possibilities of inventory systems are presented.