Patent ID: 8181533

Claim:
An ultrasonic flow meter for measuring the flow of a fluid through a pipeline, comprising: a spool piece including a throughbore and a transducer port extending from the outer surface of the spool piece to the throughbore; a transducer assembly disposed in the transducer port, wherein the transducer assembly has a central axis and comprises: a transducer holder having a first end proximal the throughbore of the spool piece, and a second end distal the throughbore of the spool piece; a piezoelectric capsule including a piezoelectric element, wherein the piezoelectric capsule is coupled to the transducer holder and extends generally axially from the first end of the transducer holder; a transformer capsule including a transformer, wherein the transformer capsule is coupled to the transducer holder and is axially spaced apart from the piezoelectric capsule.