FLOW MEASUREMENT USING NEAR FIELD MICROWAVES

摘要

A flow meter (12) for measuring flow rate and flow composition of a process fluid includes a microwave source (100) configured to generate a microwave signal. A probe tip (30) is coupled to the microwave source (100) and in near field proximity to the process fluid (16). The probe tip (30) is configured to apply the microwave signal to the process fluid (16). A microwave detector (102) coupled to the probe tip (30) is configured to detect a near field microwave signal from the process fluid (16) in response to the applied microwave signal. Flow calculation circuitry (112) determines flow rate and/or composition of the process fluid (16) as a function of the detected microwave signal.