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, and to provide electrical output about these measurements that are proportional to the input level.  Level transmitters are designed to measure level based on either a point level or continuous level readings.  Point level transmitters provide output when a specific level measurement is reached.  This output is generally in the form of an audible alarm or an electrical charge to actuate a switch. Multiple point level transmitters can be integrated together to give a stepped version of continuous level.  Continuous level transmitters measure level within a specified range and provide output as a continuous reading of the level.  Level transmitters can operate through a wide range of temperatures, pressures, vapor gas mixtures, and process conditions.