There is a Level Scanner offered by us that sends multiple pulses of invisible green spectrum lasers and measures their reflection time. It works at a photon level and operates at nanosecond speeds, thousands of times per minute. Scanner is a level sensor that changes the market from level to volume, providing accurate and continuous volume and mass measurement of material inside the silo. The level can be solid, liquid, or vacuum. Level Scanner is very effective and accurate.
A Level Transmitter is sensor and electrical transmitter that provides continuous level measurement. Level transmitters can be used to determine the level of a given liquid or bulk-solid at any given time. This is different to a level switch which only alarms when the level of material (liquid or bulk-solid) reaches a predetermined level. The transmitters provide an electrical output proportional to the level of a liquid or bulk solid in a confined space. Level Transmitter is very effective.