Capacitive Level Transmitters. These devices, also called RF level transmitters, use a radio frequency technique based on differing dielectric constants. The impedance detected by the radio frequency changes whenever material approaches the sensing region. These transmitters are used with wide variety of solids, aqueous and organic liquids, and slurries. They contain no moving parts, are rugged, simple to use, easy to clean, and can be designed for high temperature and high pressure applications. The device generates an electrical signal that can be used to control a readout or other device. These transmitters can provide both point level detection and continuous monitoring.