RF CAVITY-BASED PROCESS FLUID SENSOR

摘要

A remote system for sensing a process fluid parameter comprises a cavity, a tuner and a signal coupler. The cavity is configured to resonate at a central frequency that shifts in response to the process fluid parameter. The tuner is configured to tune the central frequency. The signal coupler is configured to receive a query signal, and to transmit an echo signal when the query signal matches the shifted central frequency.