A transducer assembly comprising: a housing comprising a conduit section and a base portion, wherein a fluid passageway is defined through the conduit section and the base portion; an ultrasonic transducer comprising a plurality of piezoelectric elements and a plurality of electrodes arranged in a stack configuration, wherein the ultrasonic transducer comprises a first end and a second end and the plurality of electrodes are configured to energize the piezoelectric elements; a conductive element at least partially surrounding the conduit section of the housing and configured to be connected to a high potential from a generator and to provide a conductive path for high potential to one or more of the plurality of electrodes; an insulator positioned between the conductive element and the conduit section , wherein the insulator is configured to electrically isolate the conductive element from the conduit section; a first borehole defined through the ultrasonic transducer; an end mass comprising a second borehole defined therethrough, wherein the end mass is positioned adjacent to the first end of the ultrasonic transducer and the end mass is configured to engage with the housing ; and wherein: the conduit section of the housing is configured to pass through the first borehole of the ultrasonic transducer and the second borehole of the end mass, the end mass is configured to compress the ultrasonic transducer against a surface of the housing when the end mass is engaged with the housing, and a first piezoelectric element of the plurality of piezoelectric elements and a second piezoelectric element of the plurality of piezoelectric elements are electrically connected in parallel. a housing comprising a conduit section and a base portion, wherein a fluid passageway is defined through the conduit section and the base portion; an ultrasonic transducer comprising a plurality of piezoelectric elements and a plurality of electrodes arranged in a stack configuration, wherein the ultrasonic transducer comprises a first end and a second end and the plurality of electrodes are configured to energize the piezoelectric elements; a conductive element at least partially surrounding the conduit section of the housing and configured to be connected to a high potential from a generator and to provide a conductive path for high potential to one or more of the plurality of electrodes; an insulator positioned between the conductive element and the conduit section , wherein the insulator is configured to electrically isolate the conductive element from the conduit section; a first borehole defined through the ultrasonic transducer; an end mass comprising a second borehole defined therethrough, wherein the end mass is positioned adjacent to the first end of the ultrasonic transducer and the end mass is configured to engage with the housing ; and wherein: the conduit section of the housing is configured to pass through the first borehole of the ultrasonic transducer and the second borehole of the end mass, the end mass is configured to compress the ultrasonic transducer against a surface of the housing when the end mass is engaged with the housing, and a first piezoelectric element of the plurality of piezoelectric elements and a second piezoelectric element of the plurality of piezoelectric elements are electrically connected in parallel. the conduit section of the housing is configured to pass through the first borehole of the ultrasonic transducer and the second borehole of the end mass, the end mass is configured to compress the ultrasonic transducer against a surface of the housing when the end mass is engaged with the housing, and a first piezoelectric element of the plurality of piezoelectric elements and a second piezoelectric element of the plurality of piezoelectric elements are electrically connected in parallel. <EOS>