Measurement of mass flow rate of liquids or gases using an ultrasonic transducer with two active sides for measuring ultrasonic signals transmitted and received both with and against the flow direction to accurately determine flow

摘要

Flowmeter (1) for liquid or gaseous media has a swirl inducing measurement chamber (2) with one or more inlets (3) and an outlet (4) with an ultrasound transducer (5) for transmission and receipt of ultrasonic signals (6) into the measurement chamber both with and against the flow direction. The transducer has first and second active sides that both act as transmitter and receiver.