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While contact testing and fluid immersion testing are standard methods in many applications, the adoption of ACU is progressing slowly, especially in the low ultrasonic frequency range. A main reason for this development is the difficulty of generating high amplitude ultrasonic bursts with equipment that is robust enough to be applied outside a laboratory environment. This paper presents the fluidic ultrasonic transducer as a solution to this challenge. This novel aeroacoustic source uses the flow instability of a sonic jet in a bistable fluidic switch to generate ultrasonic bursts up to 60\u00a0kHz with a mean peak pressure of 320\u00a0Pa. The robust design allows operation in adverse environments, independent of the operating fluid. Non\u2010contact through\u2010transmission experiments are conducted on four materials and compared with the results of conventional transducers. 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