Liquid level switches are used to detect specific liquid levels or interfaces between liquids.

Liquid level sensors are used to detect liquid levels or interfaces between liquids such as oil and water or liquids and solids.

Level sensors are used to detect liquid or powder levels, or interfaces between liquids.

Level gauges are industrial meters used to determined the level of a liquid in a fixed storage or process tank

Level transmitters or level transducers are used to measure the level of a liquid or bulk solid material (as well as slurries) within a specified space.

Level switches, all types, is a generic search form for devices that are used to detect liquid or powder levels, or interfaces between liquids.

Level controllers monitor, regulate, and control liquid or solid levels in a process