Level sensors are components used in fluid control systems to determine the level of a tank or container. They can determine the levels of different types of free-flowing media such as liquids, powdered solids, and granular solids. They provide an electrical signal which automatically communicates when connected control valves should be opened or closed.
Depending on the specific level sensor, this could be either an output proportional to the level, or an output programmed to be given at a pre-set level or value.
Level sensors play a key role in fluid control systems. Having an accurate understanding of the current position, level, and displacement of a substance is imperative in a wide range of applications and environments, meaning that the importance of the level sensor should not be overlooked.