Flow meter comprising a measuring insert with a sound transducer

A flow meter for one of a liquid and a gaseous medium (3), the flow meter comprising a casing (2;

• 24) and a measuring insert (5;
• 25) which is insertable into said casing (2;
• 24), wherein the measuring insert (5;
• 25) as a structural unit includes at least
• a) one first sound transducer (13) for emitting a first sound signal (15) into a measuring path (8) through which the medium (3) flows during operation and a second sound transducer (14) for receiving the first sound signal (15) after passing through the measuring path (8);
• b) the measuring path (8) through which the medium (3) flows during operation when the measuring insert (5;
• 25) is inserted;
• c) at least one end plate (12) which seals a casing opening (6) of the casing (2;
• 24) into which the measuring insert (5;
• 25) is insertable to prevent an escape of the medium (3), and which is provided with at least one of the two sound transducers (13, 14);
• and
• d) at least one outer transducer cover (17) which covers at least one of the two sound transducers (13, 14) on an outside of the end plate (12) remote from the medium (3), wherein
• e) a seal (18) is arranged between the transducer cover (17) and the end plate (12), and an electric connection wire (20, 21) is guided through the transducer cover (17) to at least one of the two sound transducers (13, 14) in a sealed manner.