Patent ID: 7911306

Claim:
An ultrasonic meter comprising: a spool piece defining a fluid flow pathway within a pressure boundary; a first and second transducers operatively coupled to the spool piece and within the pressure boundary, the first and second transducers in operational relationship to each other; an electronics enclosure coupled to the spool piece, the electronics enclosure outside of the pressure boundary; a signal acquisition circuit board positioned within the electronics enclosure; a transformer board positioned within the electronics enclosure proximate to the signal acquisition circuit board, the transformer board comprising: a base comprising a recess; a circuit board within the recess; a first and second transformers mechanically coupled to the circuit board, each transformer comprising a first winding and a second winding; said second winding of the first transformer electrically coupled to the first transducer, and the second winding of the second transformer electrically coupled to the second transducer; said first winding of the first transformer electrically coupled to the signal acquisition board, and the first winding of the second transformer electrically coupled to the signal acquisition board; said first and second transformers provide, at least in part, impedance matching between the transducers and the signal acquisition board; and a nonconductive fill material contained by the recess and encasing the circuit board and transformers.