Process Level Measurement Traditional sensors such as displacers and differential pressure transmitters are making way for new technology and in particular two-wire radar level transmitters. We look at some of the advances in different level technologies and highlight why pulse radar is rapidly becoming the preferred choice for process level measurement. Capacitive / Admittance level transmitters Capacitive level transmitters have been used on a variety of liquid and solid level applications for many years. If the process is understood and does not vary, and if a number of basic rules are followed, then capacitive level sensors can prove to be reliable and cost effective. In the past, applications with very viscous and conductive products have proved to be problematic. However, recent advances such as "phase selective admittance" processing within the transmitter oscillator have allowed automatic compensation for product build-up on the prob