Radar Continuous Level Measurement – Overview This Radar level transmitter is designed for continuous level measuring of conductive or non-conductive liquids, pulps and solids. It operates based on the Time Domain Reflectometry principle. Micropulses are sent along a probe guide at the speed of light. As soon as the impulse reaches the surface of the medium, it is reflected back to the electronic module. Level distance is directly proportional to the flight time of the impulse. The reflected signal is dependent on the dielectric constant of the material; the feasibility of the measurement is εr ≥ 1.9. The TDR technology is unaffected by the properties of the medium as well as that of the space above it. Measurement is also unaffected by the change in the physical properties of the materials such as temperature, pressure, and dielectric constant. It’s reliability and precise measurements are useful in challenging conditions like agitated liquids, aggressive media, heavy chemical fumes, pressurized tanks or foam. Easy installation is ensured as you enter the basic tank parameters via the transmitters HMI or the GF Eview software and then the device configuration is completed. Secure and fast mounting of the devices is enabled by multiple options for process connection and coatings. Its superb durability is a result of high-performance coatings that protect the contacting probes in harsh conditions, ensuring even greater reliability. Radar Continuous Level Measurement – Features Safe and reliable East to install Superb durability Measuring range up to 6 m Accuracy: ± 5 mm PP / PFA coated probes available on request Rod & cable versions available Minimum εr 1.9 2-wire version Graphic LCD display 4 to 20 mA HART output Medium temperature range: -30 °C to 90°C Maximum process pressure: 40 bar IP67 protection
