These technologies measure a secondary property, such as pressure or time-of-flight, to calculate the level. INSTART - Instrumentation Course - Ch. 1 - Basics - Udemy
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. These technologies measure a secondary property, such as