Radar used to measure tank hydrocarbon liquid level

Measuring liquid level in storage tanks by the use of radar equipment, which has been the most common method of level measurement on seagoing tankers, is becoming more prevalent on storage tanks in refineries and tank farms. Radar level gauges are nonintrusive instruments and as such are generally preferred to those that interfere with the liquid because nonintrusive devices eliminate the error associated with devices that disturb the liquid level during measurement. Typical advantages of radar level are: high resistance to environmental influence, great flexibility for most uses, and the potential for the accuracy required for custody transfers. Here is how radar is applied to tank-level measurement along with some of its requirements and limitations.