APPARATUS AND METHOD FOR MEASURING THE FLOW VELOCITY OF FLUID IN PIPE

An Apparatus (1) for measuring the flow velocity (Vmed) of a fluid (5) in a pipe (2), comprises a housing (3) in which a first ultrasonic transducer (TD1) and a second ultrasonic transducer (TD2) arearranged at a predefined distance (L) to each other, wherein said first ultrasonic transducer (TD1) includes a first sound transmitting element (4a) and a transmitter/receiver unit (6a) mounted thereto which are adapted to emit first ultrasonic pulses (P1) at different angles and said second ultrasonic transducer (TD2) is adapted to receive said first ultrasonic pulses (P1) and generate a first electronic output signal, and wherein the second ultrasonic transducer (TD2) includes a second sound transmitting element (4b) and a transmitter/receiver unit (6b) mounted thereto which are adapted to emit second ultrasonic pulses (P2) at different angles, and wherein said first ultrasonic transducer (TD1) is adapted to receive said second ultrasonic pulses (P2) and generate a second electronic output signal, a control and