The primary goal of level measurement is to determine the height of a medium—be it liquid, gas, or solid—within a containing vessel. This measurement serves three main purposes:
Utilize a buoyant object that moves with the liquid surface. Modern versions often use magnets to translate this movement into a signal. Indirect (Inferential) Methods instart instrumentation course ch 5 leve link
Tracking quantities for billing and regulatory compliance. The primary goal of level measurement is to
Maintaining a constant supply for blending, mixing, or stabilized flow to downstream processes. Different types taught in the course include Tubular
Transparent tubes or windows attached to a vessel that allow operators to see the true level. Different types taught in the course include Tubular , Reflex , Transparent , and Magnetic .
These technologies measure a secondary property, such as pressure or time-of-flight, to calculate the level. INSTART - Instrumentation Course - Ch. 1 - Basics - Udemy
Simple tools used for centuries, still relevant for measuring fuel oil bunkers or petroleum tanks.