Patent ID: 7954387

Claim:
An ultrasonic transducer assembly having a proximal end and an opposing distal end, the proximal end oriented towards a medium to be a measured, the transducer assembly comprising: an outer housing; an electronics package coupled to the distal end of the outer housing; an electroacoustic signal generating element secured within the outer housing, the generating element formed from a material and comprising a proximal face defining an ultrasonic path for transmission of an ultrasonic signal, the ultrasonic path being perpendicular to the proximal face, the ultrasonic signal having a characteristic frequency; an electrical lead for conducting electrical signals from the electronics package to the electroacoustic signal generating element; an acoustic dampening compound disposed within the outer housing on the distal side of the electroacoustic signal generating element; an isolation diaphragm coupled to the proximal end of the outer housing, the isolation diaphragm characterized by a material having a thickness, the diaphragm thickness being thin relative to a characteristic wavelength of the diaphragm material; and a fluidic transmission layer disposed between the proximal face of the electroacoustic signal generating element and the distal surface of the isolation diaphragm.